Category: Mucking About With Things

Labels for stored nuts and bolts as a simplest-possible, just-barely-useful task to furnish motivation needed to begin learning CAD software (FreeCAD)

  • December 7, 2022
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HerpDerp Mucking About With Things Personal Firsts The Diary of Lupin Pooter
Three containers of M2 coupling nuts (304 stainless steel) bearing my taped-on homemade labels, along with the retailer’s packaging (clear plastic heat-sealed baggies). Motivation is critically important in task-based learning, but acquiring a new skill from scratch can be a hard slog even when you genuinely, even urgently, need to be able to do the […]

Overkill: Aramid thread to mend a woven-PP bag.

  • October 26, 2022
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Mucking About With Things The Diary of Lupin Pooter
Fixed the zipper on a woven-polypropylene (PP) bag aka 蛇皮袋 (Snakeskin Bag in Simplified Chinese). Recently, I stuffed a woven-polypropylene bag a mite too full of stuff and managed to pop the its zipper slider (the thing with two nostril-like orifices which one pulls back and forth) off one side of the zipper’s “chain” (the […]

Here’s the obligatory thermal camera hand selfie

  • October 11, 2022
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HerpDerp Mucking About With Things Personal Firsts Spitting Images The Diary of Lupin Pooter TØØLS
A human hand as viewed by a FLIR ONE Pro infrared camera dongle for Android phones. Temperature measurements with K-type thermocouple probes (to which I alluded in a previous entry: Hardwired auto-off sucks. Don’t build it into tools/instruments you design.) are useful, but you’ll only get readings at the precise locations where you place the […]

Hardwired auto-off sucks. Don’t build it into tools/instruments you design.

  • October 1, 2022
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HerpDerp Mucking About With Things Testing TØØLS
Hardwiring an auto-off feature into a measurement tool or instrument, like a digital thermometer, is dumb and bad. Don’t do it. Providing it as an option is probably useful in a lot of cases, but turning a tool off after an arbitrarily chosen length of time is dumb and bad. Five-minute-and-change-long clip of two DJI […]

Some smaller HOPs

  • August 23, 2022
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HerpDerp Mucking About With Things The Diary of Lupin Pooter TØØLS
I like my Wera 42-piece 8100 SA 2 Zyklop Speed Ratchet Set [1/4″ drive, metric] and it sees a fair bit of professional-amateur tinkerer usage, particularly the included 8784 A1 Zyklop bit adaptor, 1/4″ (05003529001), with hex-inner or Torx drive bits. Often, though, I’ve had to dig out a separate bit assortment to get a […]

Hello from Judson’s Garage: Fiddling around with upscaling and enhancing low-res, low-quality video

  • August 16, 2022
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HerpDerp Mucking About With Things Personal Firsts
Concluding frames of the commercial for MEGO’s ‘Forbidden Zone Trap’ Planet of the Apes playset. Vault of Vintage Toys recently posted an image of the box for a 1970s-era MEGO Planet of the Apes (check out All PLANET OF THE APES Original Franchise Trailers (1968 – 1973) if you’re only familiar with the remakes) playset: […]

Having a gander inside a SMART SENSOR AS808 (an inexpensive, standalone 1xAAA-powered temperature and humidity sensor)

  • June 21, 2022
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HerpDerp Mucking About With Things Teardowns The Diary of Lupin Pooter
The screen of the (reassembled) SMART SENSOR AS808, displaying the ambient temperature and humidity as well as the date. We have some small and accurate-enough temperature and humidity sensors (“SMART SENSOR AS808”). They run on single AAA batteries and the batteries last for months and months. Their biggest flaw is the lack of any way […]

A mildly satisfying micro project: increasing the run time of a pull-string cat toy by making the string longer

  • May 18, 2022
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HerpDerp Mucking About With Things Teardowns The Diary of Lupin Pooter
The pull-string cat toy, disemboweled. Some recently-bought cat toys came with spring-powered vibration motors. The springs (likely spiral torsion springs, i.e. watch springs) are loaded by drawing back a length of string attached to the motor’s axle. When you draw back the pullstring and release it, the eccentric mass on the motor’s axle causes the […]

Soldering fixture test: stainless steel mesh + silicone foam

  • June 21, 2021
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Contrivances Mucking About With Things Sodding soldering The Diary of Lupin Pooter
Here’s the setup I tried: a cut-off length of white silicone foam (with a 15mm x 20mm rectangular cross-section), a roughly square piece of stainless steel mesh, and binder clips securing the mesh against the foam. On occasion, one needs or wants to solder wires to a small and irregularly-shaped component. Last month, I tried […]

This may not have worked (reliably) even if I’d had the pin ordering correct

  • June 11, 2021
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Contrivances HerpDerp Mucking About With Things Sodding soldering The Diary of Lupin Pooter
Here’s a zoomed-in image of my attempt to connect to an SCD41 sensor without soldering wires onto it or cobbling together some sort of jig with pogo pins. I recently got some SCD41 sensors. They report CO2 level in PPM as well as temperature and humidity. They’re also surface-mount, of the LGA variety and small […]

Calibration slides: a boon for measuring small things like the dimensions of solder pads on surface mount components

  • May 28, 2021
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Contrivances HerpDerp Mucking About With Things Sodding soldering TØØLS
One of the calibration slides, with the 1-mm-per-division scale above a new surface-mount CO2 sensor from Sensirion. I hadn’t aligned the start of the scale with the left side of the sensor yet, but it’s 1 centimeter (10mm) square. The trend seems to be that the share of interesting new thingamajigs and doodads available only […]

Hits and a miss, sort-of fixing obliterated solder pads on a PCB

  • May 25, 2021
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HerpDerp Mucking About With Things Sodding soldering The Diary of Lupin Pooter TØØLS
Pre-solder-enblobbening photo of my jury-rigged fix for an obliterated solder pad intended for the positive pin of a coin-cell battery holder mounted on the reverse of the PCB. In recent months, I’ve been lending a helping hand to a few people who’ve shown interest in electronics. I’m not an EE or an electronics expert of […]