Quotidien Shaarli
January 15, 2026
Add sheet metal panels to your project almost for free.
Did you know there were typewriters that used ball point pens to draw not just text but also graphics? I’ve collected several of these over the years. Read on to discover a world that you didn’t know existed.
Sometimes it’s handy to have a repeater to extend the range of a radio transmission. The particular usage I have in mind is to be able to receive telemetry from a landed payload that is too far away (or hidden by buildings or geography) to receive directly, but could possibly be received via a repeater up on a mast or flying on a drone.
Is it digital, or is it analog? Well it's some combination of the two! The rack driven 7 segment display is a fully 3D printed mechanical desk piece that is equal parts satisfying and bewildering. Turn the top dial to rotate a series of 14 cams which push on a rack and pinion system to reveal a number. Operate is manually, or add a servo motor to the back and have the thing run on it's own.
Modern TVs are very poorly suited for kids. They require using complicated remotes or mobile phones, and navigating apps that continually try to lure you into watching something else than you intended to. The usual scenario ends up with the kid feeling disempowered and asking an adult to put something on. That something ends up on auto-play because then the adult is free to do other things and the kid ends up stranded powerless and comatose in front of the TV.