Happy New Year from Adafruit!
Cheers to our wonderful community, and to a bright year ahead!
Stay tuned next week for a recap of 2021 as we look back at Adafruit’s Top Tens
In the latest Recomendo, Kevin Kelly wrote:
Foam core is super versatile making stuff. Together with hot glue you can make almost anything – doll houses, organizers, quick prototypes, kid’s constructions, models, displays, etc. The boards can be expensive at stationary stores. The cheapest source of foam board I know about are 20 x 30 x 3/16 inch sheets from the Dollar Tree store, at $1.25 per board. They are thin but sufficient and cheap.
Dollar Tree foam board sheets are especially coveted by tabletop gamers, dungeon crafters, diorama builders, “foamies” (foam plane builders), and other hobby crafters because the paper is so easily peeled away from the foam. All you have to do is spritz with alcohol and the paper comes right off, leaving you with a 3/16″ sheet of foam to work with.
In this video on DutchRC Adventures they show how to make curved shapes with the foam.
This past year, in my weekly maker tips newsletter, Gareth’s Tips, Tools, and Shop Tales, I started a semi-regular column of jargon, slang, and technical terms that I thought would be informative and/or entertaining to my readers.
Here is the collected list for 2021. I’ve also incorporated the jargon and slang that I included in the 3rd edition of The Maker’s Notebook (which also came out earlier this year). This is in no way comprehensive or even current (some of these are very old). There are just the terms that crossed my transom this year. Add your own in the Comments.
***
Blind hole – A hole that doesn’t penetrate the workpiece all the way through, as opposed to a through hole which does.
Bolt strippers – A pair of pliers. Said because using pliers on a bolt, when the proper wrench is not available, is a stripped fastener waiting to happen.
An “infinite mirror” book nook by Nerdforge.
Book nook – A diorama built inside of an insert that slides onto a bookcase shelf. Science fiction, fantasy, and horror characters and scenes from books and films are popular book nook themes.
Buck – In material-working, a buck is a form (usually wood or metal) over which a metal, leather, or other material is hammer-formed. The term buck also refers to any of various heavy frames, racks, or jigs used to support materials or partially assembled components during manufacturing, as in aircraft assembly. Also: a door (or window) buck is a frame of wood or metal set in a partition, especially one of light masonry, to support door hinges, hardware, finish work, etc.
Canslaw – In metal detecting, the shredded pieces of aluminum cans found in the ground that were cut up by a lawnmower or plow. Canslaw and pull tabs are the bane of detectorists.
Dead bug mode – An IC chip with its pins in the air. Dead bug mode is used in freeform soldering where you construct a circuit without a circuit board by soldering the components directly to each other and to the pins of the IC.
A retro-futuristic grav car on Bill Making Stuff, made almost entirely from deo sticks.
Deo stick – [deodorant stick] Many trash bash (see below) modelers on YouTube issue challenges to each other to use a single trash type in a build. A frequently issued challenge is to build models exclusively out of “deo sticks.” Turns out, there are a lot of interesting plastic parts found inside of deodorant sticks.
Eat the frog – As the saying goes: “If it’s your job to eat a frog, it’s best to do it first thing in the morning. And if it’s your job to eat two frogs, it’s best to eat the biggest one first.” The idea being to get the most unpleasant/daunting tasks out of the way first thing. This saying is often attributed to Mark Twain, but it actually predates him.
Feel – The secret sauce of working the physical materials. Feel is knowing things like how much force, tension, torque, etc. you can safely apply to a given object. Largely a learned skill.
Paint brush ferrules.
Ferrule – A ring or metal band that fits around the business end of a hand tool (where the tool meets the handle) to help give it strength and to help hold the tool in place. E.g., the ferrules on paint brushes help to hold and protect the bristles of the brush.
Grail [item] – An extremely hard-to-find object that you are forever looking for but unlikely to ever find. E.g., a grail book, or tool, or game.
Greeble – Bits of raised details that are added to the surface of an object to make it look more complex and visually interesting. Used in movie special effects, scale modeling, cosplay, etc. The term originated with the special effects team working on the first Star Wars movies.
Grounding hump – A feature of an electrical junction box where the grounding hole is on a inwardly curved hump so that the grounding nut does not protrude beyond the box.
Guerilla making – Coined by German maker Laura Kampf, guerilla making is when you make (or repair/improve) something in a public space without asking permission.
Handyma’am — We hired someone recently to repair some old metal bi-fold metal doors on a closet. The woman who came to do the work described herself on her card as a handyma’am. We thought maybe she’d come up with it, but it turns out to be a growing term for female repair people.
Hogging out – In metalworking, woodworking, etc., to quickly remove a large amount of material from a workpiece.
Knitting – Coined by my old programming/hypermedia partner, Peter Sugarman, knitting is any repetitive, low-mental task that you can easily background or perform when you need a break from more taxing work. “I’ll do some knitting and fold these brochures while we talk.”
“Always be knolling.” From Tom Sachs’ 10 Bullets video.
Knolling – A technique of grouping objects that are alike and arranging them at right angles to one another. Used for organizing or photographing collections of objects. Named after the very angular furniture of Florence Knoll.
Log jam – When you finish a project and there are a few bits left (spare bolts, circuit boards, etc…) that need to be put back in their rightful place. They’re not rubbish, but you don’t have time to sort them. So, you put them in a pile for later. Then, another project happens, more bits to the sort pile, and before you know it, you’ve got a “log jam” of (typically fiddly) things that need to flow downstream to their destinations, but they’re all snagged together in an ever-growing pile. Eventually, you either need to sit down and spend the day sorting or admit defeat and just throw everything away. [H/t Andrew Lewis]
Magic smoke – The caustic smoke that’s produced when an over-stressed circuit or component fails and burns, literally letting out a puff of smoke. The joke goes that the device works because it contains such magic smoke. If anything happens to “let the magic smoke out,” the device no longer functions. Powering a just-made device on for the first time is sometimes referred to as a “smoke test.” Also: blue smoke, magic blue smoke, and letting the genie out.
Makecation – Termed coined by Phil Torrone of Adafruit. A play on “staycation,” where you take time off but don’t go anywhere, and in this case, dedicate yourself to a special summer project (or two).
Maker Christmas – That Christmas morning-like feeling you get every time that you enter your shop/work area and look at the results of a previous day’s labors (at least when you’re happy with the results).
Maker math – When you do a cost/benefit analysis on making something vs. buying it, determine that it’s much more cost effective to buy, but you make it anyway because it’ll be fun, educational, and it will have been made by you.
Metal mountain – What miniature painters and tabletop gamers call the gigantic pile of yet-to-be painted metal and plastic miniatures that every hobbyist has and feels guilty about. Related: Shelf of shame – all of the tabletop games on the shelves that you’ve never gotten around to playing, but that doesn’t stop you from buying new ones.
Monkey tight/Gorilla tight/Konged – Monkey tight = tight enough, Gorilla tight = too tight, Konged = immovable. [H/t Sam Freeman, Ross Hershberger]
Mother color – I recently learned of a (new to me) painting technique, called mother color. This is when you pick a thematic color and add that color to every other color in your painting, miniature, model, etc. to create color harmony throughout the piece. Here’s a video detailing the technique.
Percussive maintenance – Old military slang for whacking the daylights out of something to try and get it working again. Often done using a persuader.
Persuader – Any hammer, sledge, axe, or other tool used to “encourage” material to move.
Posi-Lock Connectors — Strong, no soldering connections. Via Mark Frauenfelder’s newsletter The Magnet, I was introduced to Joshua Shachter’s Wheelhouse. In Wheelhouse #10, Josh writes about a wire connection type I’ve never used: posi-lock connectors. These plastic, screw-together connectors require no soldering and form a strong, easily removable connection.
Proud – When one workpiece, say a dovetail joint in woodworking, extends beyond flush. This is done so that the “proud” piece can be cut or sanded down to create a perfectly flush surface.
Shop shower – Spraying the “shop glitter” (work dust) off of yourself before leaving the workspace.
Spoilboard – A sacrificial piece of material (wood, fiberboard, plastic, metal) that goes under a workpiece being cut or drilled to help secure it in place and/or to prevent the tool from cutting into anything it shouldn’t.
Swarf – Pieces of metal, wood, or plastic debris created during machining, woodworking, or similar subtractive processes. Not to be confused with kerf, which is the cut made into the material. Kerf is commonly understood to be the width of the material that’s removed during cutting, and it’s important to consider kerf thickness when measuring and cutting. [H/t Bob Knetzger]
Tear out (or chip out) – What happens when the grain of wood along an edge being cut cannot support itself and tears away along the cut. Methods of preventing tear out include using painter’s tape along the cut line or pre-scoring the line with a razor knife.
Tinkeritis – When you overwork, futz with, and try and improve something that still works poorly because you really don’t know what the hell you’re doing. Reader txinkman submitted this one and says he knows it in reference to motorcycles. The guy who originally owned the house I just sold had a classic case of tinkeritis. He thought he was a well-rounded handyman. He wasn’t.
Trash bash – A type of modeling or crafting for tabletop gaming where you exclusively (or almost exclusively) use discarded items (plastic food containers, coffee stirring sticks, straws, etc.) for the build materials. Part scratch-building, part kit-bashing, part upcycling. For some inspiring trash bashing, check out the Trash Bash International group on Facebook.
One of my first “transporter accidents.” I call this one “Shipwrecked.”
Transporter accident – A 3D print that has failed, creating a tangled mess of plastic where your object was supposed to be. Also: spaghetti, spaghetti monster, or angel hair pasta.
Unobtanium – Unusual, costly, or theoretical material that is impossible to acquire. The opposite of obtainium which is any material that you can beg, borrow, or steal.
Wave a dead chicken – To basically resort to voodoo—any irrational act— in a last-ditch effort to get something to work (or to satisfy a colleague, boss, etc. From early hacker slang (The Jargon File).
WDITOT -“Why Didn’t I Think Of That.” Not to be confused with ID10T, which is another thing entirely. [via Steve Roberts]
A spectacular booger weld.
Welding boogers – Bad, ugly welds or a weld blob that has adhered someplace where you don’t want it. Also, a bad weld or a bad welder: “I made a total booger weld,” “Even after years of messing around, I’m still a booger welder.”
Witness marks – An intentional, accidental, or naturally-occurring spot – a line, a groove, or other contrasting area – that serves as an indicator of how things previously were implemented, used, repaired, or what processes were followed. The term is commonly used in clock-making. Also, marks made in two workpieces to aid in positioning them.
Zenithal priming – A painting technique that creates pre-shading by priming the object (e.g., a gaming miniature) in one color and then spray painting from the top (zenith) with a lighter color (usually white or light gray) to create a top-down underlight that will show through subsequent thin basecoats. See this excellent zenithal painting guide on Miniac.
This past year, in my weekly maker tips newsletter, Gareth’s Tips, Tools, and Shop Tales, I started a semi-regular column of jargon, slang, and technical terms that I thought would be informative and/or entertaining to my readers.
Here is the collected list for 2021. I’ve also incorporated the jargon and slang that I included in the 3rd edition of The Maker’s Notebook (which also came out earlier this year). This is in no way comprehensive or even current (some of these are very old). There are just the terms that crossed my transom this year. Add your own in the Comments.
***
Blind hole – A hole that doesn’t penetrate the workpiece all the way through, as opposed to a through hole which does.
Bolt strippers – A pair of pliers. Said because using pliers on a bolt, when the proper wrench is not available, is a stripped fastener waiting to happen.
An “infinite mirror” book nook by Nerdforge.
Book nook – A diorama built inside of an insert that slides onto a bookcase shelf. Science fiction, fantasy, and horror characters and scenes from books and films are popular book nook themes.
Buck – In material-working, a buck is a form (usually wood or metal) over which a metal, leather, or other material is hammer-formed. The term buck also refers to any of various heavy frames, racks, or jigs used to support materials or partially assembled components during manufacturing, as in aircraft assembly. Also: a door (or window) buck is a frame of wood or metal set in a partition, especially one of light masonry, to support door hinges, hardware, finish work, etc.
Canslaw – In metal detecting, the shredded pieces of aluminum cans found in the ground that were cut up by a lawnmower or plow. Canslaw and pull tabs are the bane of detectorists.
Dead bug mode – An IC chip with its pins in the air. Dead bug mode is used in freeform soldering where you construct a circuit without a circuit board by soldering the components directly to each other and to the pins of the IC.
A retro-futuristic grav car on Bill Making Stuff, made almost entirely from deo sticks.
Deo stick – [deodorant stick] Many trash bash (see below) modelers on YouTube issue challenges to each other to use a single trash type in a build. A frequently issued challenge is to build models exclusively out of “deo sticks.” Turns out, there are a lot of interesting plastic parts found inside of deodorant sticks.
Eat the frog – As the saying goes: “If it’s your job to eat a frog, it’s best to do it first thing in the morning. And if it’s your job to eat two frogs, it’s best to eat the biggest one first.” The idea being to get the most unpleasant/daunting tasks out of the way first thing. This saying is often attributed to Mark Twain, but it actually predates him.
Feel – The secret sauce of working the physical materials. Feel is knowing things like how much force, tension, torque, etc. you can safely apply to a given object. Largely a learned skill.
Paint brush ferrules.
Ferrule – A ring or metal band that fits around the business end of a hand tool (where the tool meets the handle) to help give it strength and to help hold the tool in place. E.g., the ferrules on paint brushes help to hold and protect the bristles of the brush.
Grail [item] – An extremely hard-to-find object that you are forever looking for but unlikely to ever find. E.g., a grail book, or tool, or game.
Greeble – Bits of raised details that are added to the surface of an object to make it look more complex and visually interesting. Used in movie special effects, scale modeling, cosplay, etc. The term originated with the special effects team working on the first Star Wars movies.
Grounding hump – A feature of an electrical junction box where the grounding hole is on a inwardly curved hump so that the grounding nut does not protrude beyond the box.
Guerilla making – Coined by German maker Laura Kampf, guerilla making is when you make (or repair/improve) something in a public space without asking permission.
Handyma’am — We hired someone recently to repair some old metal bi-fold metal doors on a closet. The woman who came to do the work described herself on her card as a handyma’am. We thought maybe she’d come up with it, but it turns out to be a growing term for female repair people.
Hogging out – In metalworking, woodworking, etc., to quickly remove a large amount of material from a workpiece.
Knitting – Coined by my old programming/hypermedia partner, Peter Sugarman, knitting is any repetitive, low-mental task that you can easily background or perform when you need a break from more taxing work. “I’ll do some knitting and fold these brochures while we talk.”
“Always be knolling.” From Tom Sachs’ 10 Bullets video.
Knolling – A technique of grouping objects that are alike and arranging them at right angles to one another. Used for organizing or photographing collections of objects. Named after the very angular furniture of Florence Knoll.
Log jam – When you finish a project and there are a few bits left (spare bolts, circuit boards, etc…) that need to be put back in their rightful place. They’re not rubbish, but you don’t have time to sort them. So, you put them in a pile for later. Then, another project happens, more bits to the sort pile, and before you know it, you’ve got a “log jam” of (typically fiddly) things that need to flow downstream to their destinations, but they’re all snagged together in an ever-growing pile. Eventually, you either need to sit down and spend the day sorting or admit defeat and just throw everything away. [H/t Andrew Lewis]
Magic smoke – The caustic smoke that’s produced when an over-stressed circuit or component fails and burns, literally letting out a puff of smoke. The joke goes that the device works because it contains such magic smoke. If anything happens to “let the magic smoke out,” the device no longer functions. Powering a just-made device on for the first time is sometimes referred to as a “smoke test.” Also: blue smoke, magic blue smoke, and letting the genie out.
Makecation – Termed coined by Phil Torrone of Adafruit. A play on “staycation,” where you take time off but don’t go anywhere, and in this case, dedicate yourself to a special summer project (or two).
Maker Christmas – That Christmas morning-like feeling you get every time that you enter your shop/work area and look at the results of a previous day’s labors (at least when you’re happy with the results).
Maker math – When you do a cost/benefit analysis on making something vs. buying it, determine that it’s much more cost effective to buy, but you make it anyway because it’ll be fun, educational, and it will have been made by you.
Metal mountain – What miniature painters and tabletop gamers call the gigantic pile of yet-to-be painted metal and plastic miniatures that every hobbyist has and feels guilty about. Related: Shelf of shame – all of the tabletop games on the shelves that you’ve never gotten around to playing, but that doesn’t stop you from buying new ones.
Monkey tight/Gorilla tight/Konged – Monkey tight = tight enough, Gorilla tight = too tight, Konged = immovable. [H/t Sam Freeman, Ross Hershberger]
Mother color – I recently learned of a (new to me) painting technique, called mother color. This is when you pick a thematic color and add that color to every other color in your painting, miniature, model, etc. to create color harmony throughout the piece. Here’s a video detailing the technique.
Percussive maintenance – Old military slang for whacking the daylights out of something to try and get it working again. Often done using a persuader.
Persuader – Any hammer, sledge, axe, or other tool used to “encourage” material to move.
Posi-Lock Connectors — Strong, no soldering connections. Via Mark Frauenfelder’s newsletter The Magnet, I was introduced to Joshua Shachter’s Wheelhouse. In Wheelhouse #10, Josh writes about a wire connection type I’ve never used: posi-lock connectors. These plastic, screw-together connectors require no soldering and form a strong, easily removable connection.
Proud – When one workpiece, say a dovetail joint in woodworking, extends beyond flush. This is done so that the “proud” piece can be cut or sanded down to create a perfectly flush surface.
Shop shower – Spraying the “shop glitter” (work dust) off of yourself before leaving the workspace.
Spoilboard – A sacrificial piece of material (wood, fiberboard, plastic, metal) that goes under a workpiece being cut or drilled to help secure it in place and/or to prevent the tool from cutting into anything it shouldn’t.
Swarf – Pieces of metal, wood, or plastic debris created during machining, woodworking, or similar subtractive processes. Not to be confused with kerf, which is the cut made into the material. Kerf is commonly understood to be the width of the material that’s removed during cutting, and it’s important to consider kerf thickness when measuring and cutting. [H/t Bob Knetzger]
Tear out (or chip out) – What happens when the grain of wood along an edge being cut cannot support itself and tears away along the cut. Methods of preventing tear out include using painter’s tape along the cut line or pre-scoring the line with a razor knife.
Tinkeritis – When you overwork, futz with, and try and improve something that still works poorly because you really don’t know what the hell you’re doing. Reader txinkman submitted this one and says he knows it in reference to motorcycles. The guy who originally owned the house I just sold had a classic case of tinkeritis. He thought he was a well-rounded handyman. He wasn’t.
Trash bash – A type of modeling or crafting for tabletop gaming where you exclusively (or almost exclusively) use discarded items (plastic food containers, coffee stirring sticks, straws, etc.) for the build materials. Part scratch-building, part kit-bashing, part upcycling. For some inspiring trash bashing, check out the Trash Bash International group on Facebook.
One of my first “transporter accidents.” I call this one “Shipwrecked.”
Transporter accident – A 3D print that has failed, creating a tangled mess of plastic where your object was supposed to be. Also: spaghetti, spaghetti monster, or angel hair pasta.
Unobtanium – Unusual, costly, or theoretical material that is impossible to acquire. The opposite of obtainium which is any material that you can beg, borrow, or steal.
Wave a dead chicken – To basically resort to voodoo—any irrational act— in a last-ditch effort to get something to work (or to satisfy a colleague, boss, etc. From early hacker slang (The Jargon File).
WDITOT -“Why Didn’t I Think Of That.” Not to be confused with ID10T, which is another thing entirely. [via Steve Roberts]
A spectacular booger weld.
Welding boogers – Bad, ugly welds or a weld blob that has adhered someplace where you don’t want it. Also, a bad weld or a bad welder: “I made a total booger weld,” “Even after years of messing around, I’m still a booger welder.”
Witness marks – An intentional, accidental, or naturally-occurring spot – a line, a groove, or other contrasting area – that serves as an indicator of how things previously were implemented, used, repaired, or what processes were followed. The term is commonly used in clock-making. Also, marks made in two workpieces to aid in positioning them.
Zenithal priming – A painting technique that creates pre-shading by priming the object (e.g., a gaming miniature) in one color and then spray painting from the top (zenith) with a lighter color (usually white or light gray) to create a top-down underlight that will show through subsequent thin basecoats. See this excellent zenithal painting guide on Miniac.
3dprintoutz4u shared this project on Thingiverse!
We would love to hear any feedback you have as this helps us provide better models and don’t forget to share you prints and build photos with us, we love to see them.
Please note that this model has not been printed by us yet but has had all necessary checks done to ensure printability and should print with no problems.
If you experience any problems with the files or printing process please get in touch and we will endeavour to resolve any issues in a timely manner.
Download files: https://www.thingiverse.com/thing:4974895
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!
Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!
3dprintoutz4u shared this project on Thingiverse!
We would love to hear any feedback you have as this helps us provide better models and don’t forget to share you prints and build photos with us, we love to see them.
Please note that this model has not been printed by us yet but has had all necessary checks done to ensure printability and should print with no problems.
If you experience any problems with the files or printing process please get in touch and we will endeavour to resolve any issues in a timely manner.
Download files: https://www.thingiverse.com/thing:4974895
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!
Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!
mbuck21 shared this project on Thingiverse!
This is project was inspired by TIMEULAR cube which is able to time keep tasks just by flipping the cube onto another face. As it is $120 plus some subscription fee just to get the thing we set out to create our own derivative.
Download files: https://www.thingiverse.com/thing:4979502
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!
Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!
mbuck21 shared this project on Thingiverse!
This is project was inspired by TIMEULAR cube which is able to time keep tasks just by flipping the cube onto another face. As it is $120 plus some subscription fee just to get the thing we set out to create our own derivative.
Download files: https://www.thingiverse.com/thing:4979502
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!
Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!
Keep the lanterns fresh with interchangable panels. Would probably reccomend an LED over tealight/candles for safety. From C47_3D on Thingiverse:
Lantern for tealight or candle with changeable panels
Download the files and learn more
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!
Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!
OK so part 1 we got our wiring worked out and found an index pulse. Part 2 is we started getting MFM data coming out. Now we’re capturing pulses with gpio bitbanging, and storing all the pulse widths in a large memory array. each track has a 500Khz signal, and outputs data every 5 Hz, so we have a max of 100K samples worst case.
since we’re using a cortex arm with 192K~256K of RAM (the RP2040 has 264K!), its no biggie to store all the pulses in an array. here we are reading track 1 and binning the pulses: we’re seeing three pulse width bins stand out, about 40 count, 62 count and 85 count. but there’s also a couple ultra short pulses (25 count) and an ultra long pulse (~200 count).
each count is about 48ns-ish so that translates to 2us, 3us and 4us bins, with a few 1us and one or two 10us+. not exactly sure whats up with those outliers. do we ignore them? are they start-of-data markers? We also noticed that track 0 has way more unusually long or unbinned pulses, like almost 100 different values. its a little mysterious, we’ll have to investigate if there’s something special about track 0!
Part 2:
Part 1:
OK so part 1 we got our wiring worked out and found an index pulse. Part 2 is we started getting MFM data coming out. Now we’re capturing pulses with gpio bitbanging, and storing all the pulse widths in a large memory array. each track has a 500Khz signal, and outputs data every 5 Hz, so we have a max of 100K samples worst case.
since we’re using a cortex arm with 192K~256K of RAM (the RP2040 has 264K!), its no biggie to store all the pulses in an array. here we are reading track 1 and binning the pulses: we’re seeing three pulse width bins stand out, about 40 count, 62 count and 85 count. but there’s also a couple ultra short pulses (25 count) and an ultra long pulse (~200 count).
each count is about 48ns-ish so that translates to 2us, 3us and 4us bins, with a few 1us and one or two 10us+. not exactly sure whats up with those outliers. do we ignore them? are they start-of-data markers? We also noticed that track 0 has way more unusually long or unbinned pulses, like almost 100 different values. its a little mysterious, we’ll have to investigate if there’s something special about track 0!
Part 2:
Part 1:
In this quick tip video, Adam demos the use of a product that I’d never even heard of: Solder Seal Wire Connectors. These connectors allow you to make waterproof wire joins without having to twist and solder wires. You simply slot the wires into the clear plastic connector tube and hit it with a heat gun. The tube has solder inside for the electrical connection and it clamps and shrink-seals the wires at the same time.
Adam also extols the virtues of numbered wire marking tape. These are little labels, numbered 0-9, that you can use to mark and ID corresponding connections.
In this quick tip video, Adam demos the use of a product that I’d never even heard of: Solder Seal Wire Connectors. These connectors allow you to make waterproof wire joins without having to twist and solder wires. You simply slot the wires into the clear plastic connector tube and hit it with a heat gun. The tube has solder inside for the electrical connection and it clamps and shrink-seals the wires at the same time.
Adam also extols the virtues of numbered wire marking tape. These are little labels, numbered 0-9, that you can use to mark and ID corresponding connections.
OK now that we’ve gotten the motor up and running, and the drive selected in step 1 – we know our wiring is correct. step 2 is getting data out! unlike almost all protocols we’re used to, there’s no clock pin on floppy data. it comes out in MFM format (at least, this floppy disk format does) which means we get a series of ~500kHz open-drain pulses with short negative widths, and varying positive widths that indicate flux transitions. now the *proper* thing to do here is use a PLL to sync up with the pulses since the motor speed can vary a few %, then convert the pulse widths to bits of data. but we’re gonna do it dirty to start, and just busy-poll the pin using a fast register gpio read and collect pulse widths, then maybe decode and bitpack them on the fly. not sure if this is workable yet, but it looks OK so far: just started collecting the data pulses and they seem to be binnable.
part 1 is here (video), and post.
OK now that we’ve gotten the motor up and running, and the drive selected in step 1 – we know our wiring is correct. step 2 is getting data out! unlike almost all protocols we’re used to, there’s no clock pin on floppy data. it comes out in MFM format (at least, this floppy disk format does) which means we get a series of ~500kHz open-drain pulses with short negative widths, and varying positive widths that indicate flux transitions. now the *proper* thing to do here is use a PLL to sync up with the pulses since the motor speed can vary a few %, then convert the pulse widths to bits of data. but we’re gonna do it dirty to start, and just busy-poll the pin using a fast register gpio read and collect pulse widths, then maybe decode and bitpack them on the fly. not sure if this is workable yet, but it looks OK so far: just started collecting the data pulses and they seem to be binnable.
part 1 is here (video), and post.
Really fun inside look at Northern Ireland’s Bushmills Distillery from Cool Hunting.
The idyllic River Bush laps close to the walls of the Old Bushmills Distillery Co. With a 400-year history of making whiskey with this water, not only is Bushmills the oldest licensed distillery in Ireland, but also the longest-running one in the world. Its new distillery building—opening in 2022—proves, however, that the brand continues to evolve. To learn more, we visited the site for a tour and tasting with the newly named master blender, Alex Thomas. Walking the distillery grounds, we entered a small warehouse set up for barrel tastings. Aromas from the wood casks filled the air.
We are adding floppy disk support to CircuitPython, here is step 1 (video), want more, sign up for the Python on Hardware newsletter, goes out in the am 
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If there’s one thing we believe in strongly here at Adafruit it is that if you have an embedded interpreted language running on your microcontroller, it’s super important that you can access floppy drives from it. Sure, sure, you could use a micro SD card, but microSD cards can get lost easily compared to a chonky 3.5″. So we’re starting to look at how to get a floppy drive up and running. The good news is you can use 5V power and it seems to be ok with 3V logic levels. We’ve got the idc cabling wired up right we think, because we can now turn on the motor and see index pulses coming out at around 5Hz. This Samsung SFD-321B datasheet has been really helpful in interfacing, and so far our code is in Arduino since we’re comfy with that for hardware noodling. We’ll publish it as a cross-platform-usable open source hardware so folks can keep on spinnin’.
The Smugglers Room, the Star Wars prop-building website, has an exciting announcement. They are going to be building a Star Wars spaceship-themed Air BnB for a treehouse park that some friends run.
The ship/guest cottage will include two bedrooms, a central area, a galley kitchen, and a fully-outfitted cockpit which will also serve as a home theater.
They will, of course, be documenting the entire process on their YouTube channel.
(12/27/2021 7:45pm ET /// editor’s note, getting correct link from Gareth now – pt)
That smartphone of yours is an everything device. It can do all the things. It’s a computer. Any process that involves information can operate on a computer. So you’ve got a stereo, a camera, a library, a compass, and, if you want a synthesizer. And out here on the internet you can find free digital synthesizers galore. He’s a selection form Sonic State:
ModulAir is a stunning software modular synth for those not yet ready for the quantum leap into VCV Rack. It offers 18 modules per patch with 55 modules to choose from including oscillators, filters, sequencers, modulators and effects – giving you a diverse range of sonic possibilities. It’s slightly dated and sometimes intimidating GUI will reward synth explorers with a rich selection of sounds good for all round use.
Happy Manufacturing Monday!
Happy Manufacturing Monday!
via NPR
In order to make these observations, the scientific instruments on the telescope need to be kept incredibly cold. That means a crucial part of the telescope is the massive sunshield that will protect it from the heat of the sun.
“The James Webb Space Telescope Sunshield is completely unique,” says James Cooper, NASA James Webb Space Telescope Sunshield manager. “There are no other telescopes that use this type of shield for cooling of their optics.”
Where is Webb? Twitter user @Rainmaker1973 shared this!
#ICYMI this is where the #JamesWebbSpaceTelescope is in space now. Just click on the link to see its distance and speed along the timeline of events that will #UnfoldTheUniverse https://buff.ly/3HbFDsJ
Where is Webb? Twitter user @Rainmaker1973 shared this!
#ICYMI this is where the #JamesWebbSpaceTelescope is in space now. Just click on the link to see its distance and speed along the timeline of events that will #UnfoldTheUniverse https://buff.ly/3HbFDsJ
Project SNOWstorm uses solar powered GPS transmitters to collect precise data on snowy owls. Fun Article about the project from Milwaukee Journal Sentinel on Yahoo:
Affection and concern for the species led Racine native David Brinker and a group of other ornithologists in 2013 to form Project SNOWstorm, a crowd-funded initiative to study and help conserve the owls.
But Brinker knows it’s important to not get too attached to the project’s subjects.
Read more and checkout the Project SNOWstorm for great interactive maps and more info on the research!
