NodeMCU module (ESP8266) based. Recieves packets on UDP to activate a relay. Also hosts a webserver to do the same.
Connects to wifi (with wifimanager) and advertises itself via mDNS. Waits for UDP packets with specific contents and activates relay (GPIO).
Also runs a webserver on http://ESPrelay.local (mDNS) . Call the unlock function with http://ESPrelay.local/unlock
This specific version is used to unlock a door, hence the unlock() function.
Sort of a counterpart to this: https://github.com/Robotto/ESPnfc
HW setup:
| RELAY | NodeMCU | (ESP) |
|---|---|---|
| ON | D3 | (GPIO0) |