What is a accurate way to generate and decode IR signals?

Question

I want to receive and generate IR signals with my PI. What is the best way to reliably do this? Would it be with something like this?

score 2 · Answer 1 · edited Oct 17 '12 at 21:56

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You should look at LIRC. I bought a cheap IR sensor (Philips OVU412000) from ebay and set up LIRC to receive signals from a TV remote in order to control a program I wrote. Works great on my Pi. I haven't looked into generating signals, but I think LIRC is capable of this.

edited Oct 17 '12 at 21:56

HeatfanJohn

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answered Oct 16 '12 at 14:18

Munkeh

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How did you interface the IR sensor to the PI? RS232 or USB? Can you post the specifics? Thanks! – HeatfanJohn Oct 16 '12 at 16:41
The IR receiver is USB and it's connected to the Pi via a USB hub (powered, as I have other stuff connected also.) Do you need any other info? – Munkeh Oct 16 '12 at 18:39
Can you provide details of how you interfaced the IR sensor to USB? Also part number would be great too! Thanks – HeatfanJohn Oct 16 '12 at 19:46
The receiver is a Philips OVU412000. You don't need to do any interfacing as it's all handled by LIRC/kernel stuff; just plug and go. – Munkeh Oct 17 '12 at 20:14

score 0 · Answer 2 · answered Oct 16 '12 at 20:15

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Here's a project on how to use LIRC to interface the PI to a home made receiver and transmitter. There is also a third schematic for a transceiver.

The receiver looks to be pretty simple, just a TSOP1238 directly connected to GPIO pins 1, 6 & 12 on the Pi.

answered Oct 16 '12 at 20:15

HeatfanJohn

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I defininetly could be wrong, but I don't think the PI has the ability to accurately generate or decode the 38k signals. – PersonOfInterest Oct 16 '12 at 23:19
@shaun5 It should be ok given it is implemented as a kernel module. – Alex Chamberlain Oct 17 '12 at 06:59

What is a accurate way to generate and decode IR signals?

2 Answers2