3 ms·
An MCU with an attached relay module that is connected to a DC solenoid controlling a valve should do the trick. There are probably a few kinks to work out tha
by datameta 6y ago
An MCU with an attached relay module that is connected to a DC solenoid controlling a valve should do the trick.
There are probably a few kinks to work out that will come up in practice!
- TeMPOraL 6y agoNumber one kink that prevents me from building such contraptions: how to ensure it doesn't catch fire and burn the house down?
- SirYandi 6y agoSimple! You just rig up another contraption with to a gite extinguisher
- Eliezer 6y agoFound the Krynnian gnome
- akiselev 6y agoUse high quality relays purchased from Digikey or another distributor (should be $10-30 in single quantities for AC mains) and put thermal fuses on the mains side of the relay (I generally put several, each going to different parts that are at risk of shorting). Slather everything but the heatsinks (add some if necessary) with fire retardant epoxy, carefully pushing the thermal fuse into the epoxy until it makes contact and pushes out most of the epoxy under the fuse.
- CodeWriter23 6y agoBurning down the house isn’t even an issue for me. USB relay throws 24VDC from a UL-approved power supply that opens the valve. The noise from the air compressor OTOH....