Web-Available Aircon Control

AC Remote Sensor
is a component of the Sensors and Controls @ DILC Project.

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Objective:
To make a prototype of a simple Aircon remote control, controllable by PHP.

Components:

1. 5 pcs. Transistors (2N3904)

2. 5 pcs. Resistors (22K ohms)

3. PCB

4. Breadboard

5. Wires - "Solid and Stranded"

6. CD-R KING Universal Remote Control

7. Arduino Micro

Schematic Diagram:

Important Steps

• In the Board of the remote, you will see black prints. This black prints are very thin so do not try to solder in it because you might destroy the connections. Try to sketch the black prints, then connect it with other black prints as seen in the documentation. (The black prints can be connected by the means of green thin lines connecting them. Try to follow the green lines from the black print chosen, and it will lead to other two or three black prints.)

• The needed controls here are ON/OFF, UP, DOWN. If you will notice, this buttons are functioning by the means of two close black prints. Those black prints are needed to be controlled, so it must be connected to arduino. There are only five black prints needed, so we will need only five wires to be soldered. We will solder only the green wires attached to the black prints needed (the green wires are insulated. To erase its insulation, kindly use a sharp thing to erase it and be careful). Solder only the bronze part where the insulation is erased. Be careful when soldering the bronze part, for when you pull it too much, the connection of the bronze will be destroyed. The combination of the left part from “Mode to “Set” is 3,9,6,11,10,11,3,11,10,5,6,5. The right part from “Power” to “Temperature Down” is 3,5,6,9,10,9.

• Get the Breadboard and mount up the transistors resistors and wires. The transistor is NPN. Search for the pin configuration of the transistor (2N3904). The emitter(E) must be connected to the Ground(Gnd), Base(B) connected to the resistor, Collector(C) connected to the remote control. There are five sets of transistors needed here.

• To connect the breadboard to the Arduino Micro, connect the Ground of the Breadboard to the ground of the Arduino, the resistors toward the PWMs of arduino. Kindly arrange the connection of the wires from the remote to the transistor to the resistor to the Arduino.

• Make the programming of Arduino and codings that is made from the documentation is correctly copied. (kindly check the serial port).

Other Pictures:

References:

 "http://arduino.cc/en/Main/arduinoBoardMicro"
 "http://www.instructables.com/id/Control-an-Arduino-with-PHP/?ALLSTEPS"
 "https://www.youtube.com/watch?v=ROBqcQ2YEB8"
 "http://www.instructables.com/id/Build-a-transistor-circuit-board-for-controlling-A/?ALLSTEPS"

See Also

• Sensors and Controls @ DILC