A Simple Liquid Level Indicator With A Single IC

Often, the only liquid level indicator you need is your eyes, such as when looking at your cold beverage on a summer’s day. Other times, though, it’s useful to have some kind of indicat…

Everything You Ever Wanted To Know About The ULN2003

The ULN2003 IC is an extremely versatile part, and with the help of [Hulk]’s deep dive, you might just get some new ideas about how to use this part in your own projects. Inside the ULN2003 y…

Quick And Dirty Microscope Motion Control For Focus Stacking

If you’ve spent much time looking through a microscope, you know that their narrow depth of field can be a bit challenging to deal with. Most microscopes are designed to only have a very thin…

Local IOT Cat Treat Dispenser

[MostElectronics], like many of us, loves cats, and so wanted to make an internet connected treat dispenser for their most beloved. The result is an ingenious 3D printed mechanism connected to a Ra…