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I like to take examples of my work when I go for an interview. It gives the interviewer something to play with and see what I can do.

The red Hotbird, an ESP-01 DS1820 reader, the purple Prectify, a 2-channel precision instrument rectifier, the green SwitchBOARd, a 3-channel digital input and reporting board based on an ESP-03, and the Power Potato, a power distribution board I use in my network rack.

The ESP-01/03 stuff turned out to spew RF noise, so I had to rethink my plans for those.

I like to take examples of my work when I go for an interview. It gives the interviewer something to play with and see what I can do. The red Hotbird, an ESP-01 DS1820 reader, the purple Prectify, a 2-channel precision instrument rectifier, the green SwitchBOARd, a 3-channel digital input and reporting board based on an ESP-03, and the Power Potato, a power distribution board I use in my network rack. The ESP-01/03 stuff turned out to spew RF noise, so I had to rethink my plans for those.

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[–] [deleted] • 1 pt

Nice, I see. I could see backfeeding definintely being a problem. Wouldn't a couple decent diodes fix that?

[–] • 1 pt

Yep. Right beside the silver object on the right (a dual-stack USB port) there are two 1N4xxx diodes that prevent backfeeding in two of the ports.