To refill my pens during large plotting projects, I designed and built a tiny peristaltic pump. It only moves ~1 ml of liquid per minute, but even that is way too much. I only need 1ml per hour. But a good thing is that pumped liquid remains in the tube which means I can power on the pump for a few seconds every few minutes. The pump runs on 4V DC and consumes ~30 mAh.
I am a Berlin based freelancer who quit Twitter after Elon took over. Hope it is nice here.
Check out some of my other platforms as well
* https://olivier.berlin
* https://youtube.com/@olivier.berlin
* https://www.reddit.com/user/Oli_Vier_0x3b29











