Dear General Electronics Community,
Recently, I have been working on a project to sense pollutant concentrations in the atmosphere. The goal is to build 20 different modules and deploy them in local Primary Target Areas to report live data measurements.
Hardware:
- Arduino Nano
- NodeMCU WIFI Module
- MQ-135 Gas Sensor
- Figaro 2600 Gas Sensor
- Figaro 2602 Gas Sensor
- DHT11 Temperature and Humidity Sensor
- 10Ω Resistor (2x)
- 10KΩ Resistor (1x)
- 6V AA Battery Pack (2x)
I have chosen to integrate all of the different components onto a PCB in order to maximize building efficiency. However, I believe that the circuit is faulty because the module's temperature sensor displays values up to 40 degrees Celsius at room temperature. Moreover, my 6V battery pack powering the Arduino Nano and sensors barely last 8 hours. I am seeking guidance because I cannot seem to find the error in my circuit schematic and I was hoping this forum could help!
The files for my circuit schematics and sensor information are attached in a .zip file folder below.
Thank you for your help! Please let me know if you have any further questions!
Arduino Gas Sensor.zip (547 KB)