ESP8266 GPIO control over MQTT using ThingsBoard
Programming/flashing scheme
ESP8266 PinUSB-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
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