IgorLirc will work only with IgorPlug-USB device, designed by Igor Cesko. Please, visit his homepage in order to obtain complete information about this hardware .

This page is here just to provide help in order to build such a device.

Needed parts

Those electronic parts are easy to find in many stores:

The price of those components are below 10 euros.

Additionally, you will need a solder and soldering paste. Optionally, a polimeter or multimeter will come in handy, for example, to locate bad connections. A small cutter will be useful, too.

Building up the circuit

The following diagrams show how to place the components and solder them over the test board. The upper one shows the back of the board, where componentes are soldered. The lower one shows the front of the board, where the components are mounted.

Test board diagram

The trick for a handsome circuit is to use the large metal pins of capacitors and resistors as if they were wires. But be sure not to make false contacts with them, since they are not isolated. Metal pins are shown in maroon on the diagram. We need some pieces of wire, too. They are shown in purple.

Pins and connectors

USB cables and connectors have been standarized, including their color coding scheme. Refer to http://www.usbman.com/Guides/BelkinMotherboard_cable_assembly.htm for complete information. This is a summary:

Color coding scheme for USB wires:
Red or Orange = Power, 5 volts (Vcc).
White or yellow = DATA- (D-).
Green or gray = DATA+ (D+).
Blue, black or maroon = Ground (GND).

Motherboard's USB Pins: Each port has two rows of five pins, each row corresponds to one USB device. Pin 1 is located on one corner, and pin 10 on the opposite one. It is usual to find that pin 10 has been removed, so it is easy to figure out which pin is which.

Motherboard's USB pins


Visit the photo gallery in order to see some mounted circuits.