Sonoff DIY 4ch
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Introduction
The Sonoff DIY 4ch is a relay unit to be used as retrofit. It is based on the ESP8285 chip and can control four relays.
Hardware
- ESP chip version: ESP8285
- Flash size: 1M
- Onboard USB-TTL converter: No
- GPIO's broken out/available to free use: 0, 9, 10, 14 (vias)
- GPIO tied to onboard hardware: 4, 5, 12, 15 (Relay 10A@230VAC), 13 (LED red)
- Power supply information: 7-32VDC or 5VDC (USB)
- Antenna: onboard PCB antenna
GPIO 0, 9, 10, 14 are available on the board, marked with "key" 1, 2, 3, 4.
Wiring/flashing
A programmer is needed to flash this device.
Programmer ESP TX <--> RX (fourth pin seen in picture above) RX <--> TX (third pin seen in picture above) Power 7-32V <--> VCC (input power, also 5V USB can also be used) GND <--> GND (input power)
In order to get the unit in flash mode the GPIO-0 needs to be LOW. If you have soldered pin headers to the "key" vias you can use a jumper between "COM" and "KEY1".
