This article is a part of a series that I’m doing based on building a agriculture IoT system.
- Be mobile and compact ( not too many wires )
- Capable enough to connect to sensor and controller ( RF and Wifi )
- Have enough mem to expand the code. ( for future needs if any )
Based on the above NodeMuc was selected which has ESP8266 a wifi chip and a capable microcontroller . Please check out mysensors docuemtation here for other gateway types.
- NodeMuc ESP8266
- Micro usb cable.
Connect NodeMuc and NRF24L01+ as described here.
Completed setup would look like below. I’m using micro USB cable to power the gateway.
Install esp8266 board support on your Arduino IDE . Tools >> Board >> Board Manager is where you can install it. Once installed select NodeMuc board with Tools >> Board
The example mysensor GatewayESP8266MQTTClient code ( You can find the same also on Examples >> Mysensor >> GatewayESP8266MQTTClient ) can be used with minor changes to program Gateway. Please change the below parts in the code according to your environment.
// Set WIFI SSID and password #define MY_ESP8266_SSID "MySSID" #define MY_ESP8266_PASSWORD "MyVerySecretPassword" // Enable MY_IP_ADDRESS here if you want a static ip address (no DHCP) #define MY_IP_ADDRESS 192,168,178,87 // If using static ip you need to define Gateway and Subnet address as well #define MY_IP_GATEWAY_ADDRESS 192,168,178,1 #define MY_IP_SUBNET_ADDRESS 255,255,255,0 // MQTT broker ip address. #define MY_CONTROLLER_IP_ADDRESS 192, 168, 178, 68
Testing & Troubleshooting::
Use Arduino IDE serial monitor and set the baud rate to 9600 . You can find gateway related debug output there, you’ll find sensor radio messages also if you have followed the sensor setup part.