Use this adapter to load your own firmware onto Sonoff devices from ITEAD.
The adapter provides a common 6-pin serial header on one side for connection of a USB-to-serial converter, and provides a 4-pin header on the other side in the correct format to match the programming header inside many Sonoff models.
Includes controller of the power line to allow the Sonoff to be power-cycled without disconnecting.
Note: Does not convert voltage, so you must use a 3.3V USB-to-Serial converter.
The newest version comes with both header types, but they’re loose so you have to select which one you want and solder it on yourself. The newest version also has a button to power-cycle the Sonoff, instead of a jumper. The button is much more convenient to use.
Details of the new version:
The older versions were:
The pin header version which came with a pre-installed 6-way pin header for connection to USB-to-Serial adapters that have a socket.
The socket version which came with a pre-installed 6-way socket for connection to USB-to-Serial adapters that have pin headers.
- 6-pin header matching FTDI cable pinout (with either a socket or a pin header)
- 4-pin header matching many Sonoff models
- Jumper or button to allow power-cycling without disconnecting
Compatible Sonoff models include:
- Sonoff Basic
- Sonoff TH10 / TH16
- Sonoff POW
- Sonoff 4Ch Pro
- Sonoff 4Ch Pro R2