TechFriday: Still experimenting with computers and relays
Posted By RichC on January 27, 2017
After a previous simple $20 relay component test, my friend Jeff and I realized that there were a few shortcomings in using it for a future project — enter the cheaper eBay $3.99 higher powered solid state relay module. This smallish sized relay component can be wired into a 40 amp circuit and switched with the same low DC voltage from a Arduino, Raspberry Pi or similar gadget.
I quickly wired it to a 110 vac male female plug and attached it to my Pine64’s GPIO breadboard and voilà it works!
On / Off, On / Off … I know, big deal. 
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