IR Remote Control of PICAXE Micro

The purpose of this blog is to show how to interface an IR remote control to a PICAXE-18M2 processor for robotics or automation. Universal remotes are cheap (what household doesn't have a few of them?) The code is very simple. I plan on using this to control a little robotic tank.

Step 1 PICAXE Brain and H-Bridge Brawn

A IR receiver module may be had for under $2. TV sets, DVD players and cable boxes all use this device to receive commands from their hand-held remote controls. Its output signal can go into any of the PIC's I/O ports (I chose B.2). The PIC has a function called "irin" that receives the code and stores it in a variable (b0). Using the debug mode on my programming software, I was able to push buttons on the remote control and see the codes being stored in b0. From that I was able to map the remote. It turned out that there were 53 codes between 0 and 52, a unique number for each button on the remote.

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