Introduction - If you have any usage issues, please Google them yourself
This topic is for temperature, CO2 equipment to detect temperature, CO2 via a thermistor and MG811 turn into a voltage, the use of A/D converter circuit to signal incoming 8051 and displays temperature, CO2 concentration and the set value in the LCD On to the measurement of temperature, CO2 concentration can determine the current status of the numerical size is ideal, and then do their heating, cooling and exhaust action.