IR Controller For Air Conditioning Unit
- 1. 1 IR Controller for Air Conditioner
- 2. 2 ourse: Power Stations ourse Teacher : RETHWAN FAIZ
- 3. 3 SHOVON, S. M. TANVIR HASSAN1 2 3 4 RAFSAN, ASIF MAHMUD AHMAD, SHAKIL Meet our Team ALAM, AHMED NOOR
- 4. 4 Through Out the Whole Presentation Circuit Diagram & Components 02 Advanced Integration of Wifi Module 03 Comparison Between Other AC Controllers 04 PCB LAYOUT OF IR CONTROLLER 01
- 5. 5 Figure 1: PCB Board Layout • The goal of this project is to make window AC units more functional. • Currently people use an on-board thermostat to turn on when the room gets above a certain temperature .
- 6. 6 Figure 2: Identification of Components in PCB Layout
- 7. 7 • Consists of Atmel ATTiny85 • Temperature & Humidity Sensor DHT22 • LM1117- Space Saving 800mA Low-Dropout Linear Regulator with Internal Current Limit. • ESP8266 WIFI Module Circuit Diagram & Components Figure 3: Circuit Diagram
- 8. 8 • Microchip 8-bit AVR RISC-based microcontroller • 8KB ISP flash memory, 512B EEPROM, 512-Byte SRAM • 32 general purpose working registers, one 8-bit timer/counter • The device achieves a throughput of 20 MIPS at 20 MHz and operates between 2.7-5.5 volts. ATtiny85 Microcontroller Figure 4: Microcontroller
- 9. 9 • Low cost • 3 to 5V power and I/O • 2.5mA max current use during conversion (while requesting data) • Good for 0-100% humidity readings with 2-5% accuracy • Good for -40 to 80°C temperature readings ±0.5°C accuracy • No more than 0.5 Hz sampling rate (once every 2 seconds) • Body size 27mm x 59mm x 13.5mm (1.05" x 2.32" x 0.53") • 4 pins, 0.1" spacing • Weight (just the DHT22): 2.4g DHT22 Temperature & Humidity Sensor Figure 5: Temperature & Humidity Sensor
- 10. 10 Integration of WIFI Module • WiFi temperature sensors to collect temps and humidity in other rooms in the house. This will be logged directly to server so data can be used to control vent ducts that direct airflow from our central heater to specific zones of the house during winter • This sends temp and humidity to the central server every few minutes. • Raw IR signals are sent directly to emulate the temperature up/down buttons on the AC unit's remote. • When the temp is changed, emulating a long button press so that it doesn't beep for each degree up or down. • If ac unit requires a button push for each degree, extend the delay in the for loop and change the number of times it loops to the number of degrees in each direction. 10
- 11. 11 11 Figure 6 : Response Curve for Different types of AC Control System How Does it Compare to Other AC Controller Now?
- 12. 12 References : 1. https://www.hackster.io/BuddyC/ir-controller-for-air- conditioner-5bd0a2 2. http://www.instructables.com/id/Build-a-transistor-circuit- board-for-controlling-A/ 3. http://www.ostricher.com/2013/09/my-arduino-powered-ac- control/ 12