Quantity   Component name
1 × Arduino Mega 2560
1 × mcp2515 CAN-bus Module This project uses the one with the SPI interface.
1 × Evaporator Coil The one used in this project is for a 1988 Chevrolet K2500.
1 × Heater Core I used what I had laying around - I think from a 2000 Dodge Dakota single zone HVAC
1 × Blower Fan I used what I had laying around - also from a 2000 Dodge Dakota
1 × Solid State Relay 40 amp, 12V, it was the most common one found on Amazon or Ebay
12 × Bipolar Stepper Motor I had 12 junk box steppers handy. They were unlabeled units, but the same general ones found in printers and scanners.
1 × DHT22 Humidity + Temp Sensor
1 × TMP36 Temperature Sensor
5 × BMP180 Barometric Pressure + Temperature Sensor
1 × SHT31-D Humidity + Temperature Sensor