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HW-622 ESP8266 Relay
HW-622 ESP8266

Available from:
Aliexpress.com
Allegro.pl





Flashed with:
Serial port

GPIO #Component
GPIO00 None
GPIO01 None
GPIO02 LedLink
GPIO03 None
GPIO04 Relay1
GPIO05 Button1
GPIO09 None
GPIO10 None
GPIO12 None
GPIO13 None
GPIO14 None
GPIO15 None
GPIO16 None
FLAG None
Template
{"NAME":"HW-622","GPIO":[0,0,157,0,21,17,0,0,0,0,0,0,0],"FLAG":0,"BASE":18}

DYI ESP8266 relay with external optoisolated button. Requires an external power supply. The input from the switch is opto-isolated so the 5V can be used directly to supply the switch. Unfortunately, it appears that many cevices do not have the 0V connected on the input. A connection needs to be made from the 0V on the supply to the 0V on the signal input.