Using Sonoff basic switches with own firmware
Sonoff mini usable GPIO : r/sonoff
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Sonoff ESP8266 re-program
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21: Six Sonoff Secrets – SuperHouse Automation
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xoseperez / espurna-original / wiki / Hardware — Bitbucket
Sonoff flickering with GPIO14 and GND connected - Hardware - Home Assistant Community
Sonoff ESP8266 re-program
Hacked IoT Switch Gains I2C Super Powers | Hackaday
esp8266 - Sonoff Dual - Where to find GPIOs - Internet of Things Stack Exchange
esp8266 - Sonoff Dual - Where to find GPIOs - Internet of Things Stack Exchange
Sonoff SV - what are the other GPIO pins for? - Hardware - Home Assistant Community
Confluence Mobile - wiki.jmehan.com
xoseperez / espurna-original / wiki / Hardware — Bitbucket
21: Six Sonoff Secrets – SuperHouse Automation
Sonoff SV Full Pinout : r/sonoff
Sonoff Basic R2 - Button with GPIO 3 (RX Pin) · Issue #1710 · xoseperez/espurna · GitHub
Sonoff SV - what are the other GPIO pins for? - Hardware - Home Assistant Community
Sonoff WiFi Smart Switch With I2C Port – JackenHack
What are the usable extra GPIOs on a Sonoff POW R2? - ESPHome - Home Assistant Community
Sonoff GPIO input - RUTG3R.COM
Getting access to GPIO14 on Sonoff Basic R2 for Tasmota. GPIO14 found on Sonoff Basic R2 - YouTube
Sonoff SV GPIO17 · Issue #716 · esphome/issues · GitHub
