Temperature control air conditioning

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Objective To control air conditioner by detecting environment temperature. When temperature increases to a certain value, the air conditioner will start. On the contrary, the air conditioner will close when the outside temperature decreases to a certain value. Principle Use temperature and humidity sensor AM2321 to detect indoor temperature and then control the air conditioner by matching codes with infrared transmission sensor. Equipment Module Number Function Microduino-CoreUSB 1 Core board Microduino-Sensorhub 1 Sensor pin board Microduino-Temp&Hum 1 Temperature and humidity sensor Microduino-IR transmitter 1 Infrared transmission sensor Microduino-Converter 1 Pin board File:Temp air.jpg 600px Hardware Buildup Setup 1: Stack CoreUSB and Sensorhub. File:CoreUSB Ble Sensorhub.jpg 600px Setup 2：Connect Microduino-IR transmitter via pin board to D3 pin of Sensorhub and Microduino-Temp&Hum to IIC pin of Sensorhub. File:Temp ir sensor.jpg 600px Software Debugging Air conditioner infrared remote control encoding definition. Here the conditioner adopts NEC encoding format. IRsend irsend; //Infrared transmission AM2321 am2321; //Temperature and humidity sensor AM2321 #define POWER_ON 0xC1602680 //Air conditioner power on/off encoding float temp = 0; //Temperature value unsigned long runTime = 0; //Air conditioner power on/off time Detect the current temperature value every second. When the temperature is above 30℃, the air conditioner opens and when it is below 25℃, the air conditioner closes. The time interval between opening and closing is 180s for fear of frequent operation. am2321.read(); //Acquire the current temperature value temp = am2321.temperature/10.0; if(millis()>runTime+180000) //Above 180s time interval { if(temp > 30) //Higher than 30℃ and the air conditioner opens. { irsend.sendNEC(0xC1602680,32); irsend.sendCode(0x00000000,16); runTime = millis(); } else if(temp <25) //Lower than 30℃ and the air conditioner closes. { irsend.sendNEC(0xC1602680,32); irsend.sendCode(0x00000000,16); runTime = millis(); } } delay(1000); Program [MicroduinoAirConditioner] Result When the temperature is above 30℃, the air conditioner opens and when it is below 25℃, the air conditioner closes. By detecting temperature value to control other functions of the air conditioner. Video