- Itead Product Page: http://sonoff.itead.cc/en/products/residential/sonoff-s26-smart-plug
- Itead Shop: https://www.itead.cc/sonoff-s26-wifi-smart-plug.html
Please see the Hardware Preparation page for general instructions.
The S26 has a red LED connected to GPIO12 along with the relay so it's not possible to disable the power button LED entirely. Setting LedState 0 disables the blue LED when the relay is turned on and reserves it for Wi-Fi/MQTT state only.
Apply rosin to shaved wires. Solder tin to the flats on the module.(First put solder tip to flat and apply tin). Gently solder the wires.
Alternative solder points available for 3V3, GND and RX on the underside of the mainboard.
| Jumper | Pin |
|---|---|
| J1 | 3V3 |
| J2 | GND |
| J3 | GPIO-12 |
| J4 | GPIO-0 |
| J5 | GPIO-13 |
| J10 | RX |
- Disconnect serial programmer and power
- Press and hold the on-board button - Note: The Button on the main board is not very sensitive and must be pressed firmly.
- Connect the serial programmer (VCC, RX, TX, GND)
- Release the on-board button
The blue LED should NOT be blinking when in Flash mode.
Running Tasmota 6.1.1 the unit reports:
| Flash Size | 1024kB |
|---|---|
| Program Flash Size | 1024kB |
| Program Size | 536kB |
| Free Program Space | 464kB |
| Free Memory | 16kB |
See issue #2808 for user information