Electronics > Electronics
IR Remot controle
hgordon:
You can sometimes find the ProbeScope on eBay for around $70. Also, there seems to be a US distributor for the product, which is actually called osziFOX -
http://www.biotechproducts.com/wittig-oszifox.html
According to what I've seen, this scope can sample up to 2MHz.
I have a Velleman HPS40 scope that cost about $200. It is not the great scope, but it has paid for itself in troubleshooting some problems, including some 38kHz IR circuits.
555 timer chip guy:
--- Quote from: hgordon on March 16, 2007, 09:26:32 PM ---You can sometimes find the ProbeScope on eBay for around $70. Also, there seems to be a US distributor for the product, which is actually called osziFOX -
http://www.biotechproducts.com/wittig-oszifox.html
According to what I've seen, this scope can sample up to 2MHz.
I have a Velleman HPS40 scope that cost about $200. It is not the great scope, but it has paid for itself in troubleshooting some problems, including some 38kHz IR circuits.
--- End quote ---
I was thinking maybe the receiver receives pulse with modulation.
hgordon:
What IR receiver are you using ?
555 timer chip guy:
--- Quote from: hgordon on March 18, 2007, 12:22:02 PM ---What IR receiver are you using ?
--- End quote ---
A 38 KHz receiver from radio shack.
hgordon:
Well ... if the IR receiver is indicating a received signal from your TV remote, it probably is working fine. The remote sends out a bit pattern by turning on and off a 38kHz IR transmitter, so the receiver will show a HIGH output when it is receiving the 38kHz signal, and LOW when it isn't. The filtering on the receiver isn't that tight, so a 36kHz signal or 40kHz signal will still trigger a HIGH. From your description, it seems that your transmitter isn't producing anywhere close to 38kHz.
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