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Enabling two color LED on Sonoff Basic R2 Smart Home Switch

Skraćena veza: https://pedja.supurovic.net/veza/10649

I like Sonoff Basic R2 Smart Home Switch as it is low priced but very functional multipurpose device. Most of all, it contains ESP8266 chipset which means it is easy to replace original firmware with custom one. I use ESPHome firmware but Tasmota is also good.

sonoff-basic-schematicBy looking at the board of this little device I found out that it contains two-colored LED. Actually, two LED-s are in one package with three contact legs. Green LED is used in factory assembly, and it is connected to GPIO13. The second LED is red colored and not used. It is actually meant to be used by optional RF module. […]
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