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 […]
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 […]
Behold, my home workbench. The component I hoped to solder is bathed in the illumination from my microscope’s LED ring light. Tonight, I tried one very simple way of holding an itty bitty, non-flat electronics component and some wires still while I solder the stripped ends of the wires to the pads on the component: […]
The wheeled cart I purchased to make moving my Quick 6601 solder fume extractor and purifier around. Inside the box, newspaper recycled as environmentally-friendly packing material. The wheels were an optional add-on, replacing the default rickety all-plastic casters.
The “before” view of my second experimental setup. Three types of PTFE tape, two PTFE-impregnated glass fiber tapes and one straight PTFE tape, all with silicone adhesive, under test. How do you hold components in place while soldering? Not the PCBs on which the components are mounted. PCB holders and PCB vises can be pricey […]
Top of my Quick 6601 solder fume extractor and purifier, with the tethered remote control and not-yet consulted Chinese-language instruction manual resting next to the base of the flexible duct. There wasn’t much assembly involved. One end of the flexible duct slides onto the flange mounted atop the machine and attaching the flared rubber intake […]
Caution: Avoid swallowed by children. Rinse immediately with water if contact with eyes. We’ve been checking out the labels on the cleaning products, soaps, shampoos, deodorants, etc. that we use, looking for quats or substances that release them. Here’s an article that’ll give you an idea of why: Questioning quats’ safety, published in Chemical & […]
To satisfy my own curiosity, I recently tore down two old Canon multifunction printers, an inkjet and a laser. When I removed one of the motors, the relative positions of the hole into which the gear on the motor axle had gone and two rivets (which were actually the ends of metal axles for other […]
I bought the tickets months ago and promptly forgot about it until I flipped to this week’s page in my tried-and-true dead-tree calendar/planner. Thus it transpired that S. and I went to see ALVVAYS play at This Town Needs (the reincarnation of Hidden Agenda) out in Yau Tong (a gritty-by-HongKong-standards industrial area sort of but […]
Nike doesn’t sell very many non-hideous sneakers in [CURRENT YEAR], so I caved and got a “recrafted” version of a 1992 sneaker (the Air Skylon) and a reissued 1997 model. Having larger-than-the-median feet in the Big Lychee poses some challenges. On Hong Kong stairs, for example, the steps are narrow enough that my toes or […]
Purchasing anything aside from the lowest-quality, subsistence-level, Hong-Kong-Chinese-cultural-normative goods in a brick-and-mortar shop in Hong Kong is a fool’s game. Unless you absolutely must have the thing immediately — and in that case good luck figuring out where to get it if it’s not something you’re already regularly buying — you’re much better getting it online.