Month: April 2024

Tecknet TK-WD004 doorbell 230V AC to USB conversion (WHL #98)

A while back, the landlords decided to toss the old doorbell system. It was fine for ringing, but the audio part was troublesome (50Hz hum of some transformer supply), plus the physical call buttons were mashed multiple times by some brutes and beyond repair. I never used the phone system, it’s just two meters away from the actual front door. The landlords also didn’t bother, because opening the actual door (plus their apartment door) can’t be done electrically, so someone still needs to dash down. It’s a bit of a granny flat situation, so live on ground level and they take up the rest of the building. […]

28th April 2024 29th April 2024 By Bzzz In 1 Comment

Improved OpenSCAD battery holder script (BigClive) (WHL #97)

A while back, BigClive used to share OpenSCAD snippets in a lot of his DIY videos, allowing viewers to print (and modify) things that he figured out for the specific video. One of those was the battery holder script, a simple array of square-packed cylinders that were hollowed out from one side, in order to, well, hold things like batteries, or hex bits, or screwdrivers, or …

I recently had the urge to store a bunch of batteries in a nice way and began modifying the simple 33-line script. Couple of viewers already suggested changes like center holes, and since OpenSCAD scripts are just plain text, they were able to share their modifications in the comment section. […]

14th April 2024 15th April 2024 By Bzzz In No Comment