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hackaday.io
8 channel USB Relay Module
I bought this 8 channel relay module from China for only about $10. http://www.icstation.com/icstation-channel-micro-relay-module-icse014a-p-5185.html I've also seen identical or similar modules from other vendors including ebay. Unlike the typical relay module, this is USB / serial driven. So it is possible to drive up to 8 relays using only ...
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