Hey all, Dmytro here. Long-time Level1 video watcher, finally made an account.
By day I work on portable train horn builds at Horn Guns — basically a 12V compressor, a small air tank and a trumpet assembly crammed into something you can carry. The electronics side is what got me hooked: relay drivers, inrush current on the compressor motor, fusing, and keeping a cheap pressure switch from chattering.
Lately I’ve been playing with an ESP32 + MQTT setup to trigger the horn solenoid through a relay with a cooldown timer so nobody can spam it (neighbors appreciate that). Happy to share the wiring if anyone’s into that kind of thing.
Also looking for advice on a quiet NAS box for the shop, so I’ll probably be lurking in the hardware threads. Glad to be here!