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readme.md

This is a set of Arduino sketches to make use of the CoZIR gas sensors. These sensors can measure temperature, humidity and CO₂. They are sold by Gas Sensing Solutions. The code is based on and partly copied from a thread on the Arduino forum, where users DirtGambit and robtillaart did great work making it possible for Arduino users to use these sensors.

#Tools# ###Calibrate### Commands the sensor to calibrate itself. To be used when the sensor is surrounded by fresh air. ###LogToCSV### Polls the sensor and logs average and extreme measurements at fixed intervals. Via the serial monitor (USB) the log can be requested as CSV, that can be copied to a spreadsheet. About nine logs can be made before the memory is full. As soon as I have a datalogger shield, I will make sketch for creating bigger logs. ###LogToSerial### Gets the sensor's measurements and sends these to the serial port. ###SetDigiFilter### The digital filter can be adjusted to filter out noise in the measurements ###SetToPolling### Polling is the preferred mode as it potentially uses less energy. The tools require polling mode. ###SetToStreaming### Streaming is the factory default.

#Setup#

  • Use the wiring schematic from C02meter.com (see below). The tools use digital pins 3 and 2 instead of the ones shown in that manual. Connect pin 3 to the sensor's Rx pin and pin 2 to the sensor's Tx pin.
  • Install the dependencies.

#Documentation#

#Dependencies#

To install libraries, download it to your Arduino/library folder and restart the Arduino IDE.

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Arduino sketches for CoZIR CO₂, humidity and temperature sensors

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