ESP-01 Relay V4.0 Relay Board
Available from:
Amazon.de
Amazon.ca
Aliexpress.com
Manufacturer:
Github.com
Flashed with:
Serial port
| GPIO # | Component |
|---|---|
| GPIO00 | Relay_i 1 |
| GPIO01 | Led_i 1 |
| GPIO02 | None |
| GPIO03 | Button 1 |
| GPIO04 | None |
| GPIO05 | None |
| GPIO09 | None |
| GPIO10 | None |
| GPIO12 | None |
| GPIO13 | None |
| GPIO14 | None |
| GPIO15 | None |
| GPIO16 | None |
Template for Tasmota v9.1+
{"NAME":"ESP01v4","GPIO":[256,320,0,32,0,0,0,0,0,0,0,0,0],"FLAG":0,"BASE":18}This works without hardware modification on the v4.0 module, but you can add a switch from RX to GND as an On/Off switch.
How to flash ESP-01(S)
There is no add in for the button on the module as it serves as a reset, rather than an on/off switch.
To make this work with v1.0 of the ESP-01 Relay, you must remove R2 (desolder it or just break it off with a screwdriver) and pull CH_PD high (this is easiest to do with a 10k resistor):
