This is the latest addition into my ever growing family of astronomy relays. I already have got commercial 8-channel UDP relay, 8-channel Web relay, 4 port IP relay and DIY 4 channel Arduino relay shield. This is basically Arduino relay shield with some hardware modifications to enable serial re-connects and even to survive host computer reboots without resetting states of the ports. This relay will control heating devices etc.
Connectors are standard male and female DC plugs:
Connectors close-up:
The enclosure (waterproof is little bit overkill here):
The whole beast:
Control program which I wrote based on skeleton I found:
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