ESP8266 GPIO control over MQTT using ThingsBoard

victor

Programming/flashing scheme

ESP8266 Pin

USB-TTL Pin

ESP8266 VCCUSB-TTL VCC +3.3V
ESP8266 CH_PDUSB-TTL VCC +3.3V
ESP8266 GND (-)USB-TTL GND
ESP8266 GPIO 0USB-TTL GND
ESP8266 RXUSB-TTL TX
ESP8266 TXUSB-TTL RX

Note that this tutorial was tested with the following versions of the libraries:

• PubSubClient 2.6
• ArduinoJson 5.8.0