This mini project "connected plant" was realised by a First-Year Engineering (FYE) team from Insat, the project consists of gathering data (Temperature, pressure, humidity, CO2) from a plant and sending them to IBM QuickStart by using Nucleo and Wifi sheild.
Used sensors : Environmental sensor (X-NUCLEO-IKS01A1) and Co2 sensor MQ5.
You should use free Pins : D12 and D13 for heating and reading analog from MQ5 sensor:
You can connect through Wifi to IBM MQTT cloud https://quickstart.internetofthings.ibmcloud.com by using X-NUCLEO-IDW01M1 Wi-Fi expansion board.
Used MBED Ecosystem :
MQTT message code:
heater = 1;
heater = 0;
value = 1000*sensor;
temp, press, hum,value);
Streaming via IBM Quickstart :
CO2 test by using candle