Categories

Silver bullet oscilloscope IR receiver

Posted on Wednesday, May 7th, 2014 in infrared, oscilloscope, reversed by the machinegeek

Marks_Spaces-1024x577
The crew from AnalysIR have shared a simple technique for viewing the mark and space data from IR transmission on an oscilloscope. They call it the “silver bullet” method.

The idea is to use a standard IR Led mounted into a BNC/RCA plug using a spare channel making an Oscilloscope infrared receiver. So we set about ordering the connectors, which arrived in the post today. Another way of looking at this device is as a ‘poor-mans’ IR receiver, but if you have an Oscilloscope to plug it into then maybe you are not so poor after all. The idea is to shine your IR remote control on to the IR Led while pressing a key which results in a small amount of current passing through the IR LED. This in turn creates a voltage differential across the terminals of the Led. For this to work well, you need to have the emitter of the remote control right up against the IR LED of the receiver.

The hardware consists of an LED in parallel with a 22K resistor housed inside an RCA plug which is then inserted into a BNC adapter.

Via the contact form.

This entry was posted on Wednesday, May 7th, 2014 at 12:01 am and is filed under infrared, oscilloscope, reversed. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

Leave a Reply

Notify me of followup comments via e-mail. You can also subscribe without commenting.

Recent Comments

  • Edward Mallon: While I loved the Nokia 5110 LCD's readability in full sun, the pressure sensitivity was a real problem for the underwater units. So I started...
  • ConnyCola: I like this article a lot! And in contrast to Max I love to hear what you guys are doing in Shenzen and Hong Kong....
  • Max: Thanks for the writeup, it's always interesting to read about a different culture. Other than that though I'm afraid I was spoiled by living neither...
  • Tepa: Heps keikkaa
  • Dan: Pick Me!!!