I want to build this simple circuit to power my Xbox on and off via an IR remote control
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Whilst I'm OK with soldering and building the circuit, I've got no idea when it comes to components. Could someone have a quick run through these parts and make sure they are what I need (the urls are to the RS components UK website and Maplins UK)
Rich Grise wrote in news: snipped-for-privacy@example.net:
Better, post the RS order numbers. Anyone can then go to
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and enter the part code in the search box. That's the easiest way to point others to RS parts from anywhere, at any time, and still guarantee they get up to date info.
That is a PIC, you can get them many places. The issue will be getting it programmed. I can probably help you out since the HEX file is available. I don't see any source code though. :-(
These are pretty generic, so any will do fine. It just has to be made for the right frequency (56kHz aparently).
Any 1/4W or 1/8W carbon-comp should do.
You want a ceramice disc for C1 and an electrolytic for C2. Since the voltage in the circuit is so low, almost any will do.
I looked at the schematic, and there are some things I wonder about. Most IR receivers have an open-collector output (meaning they can't supply a positive drive voltage on their own). I would expect to see an external pull-up resistor, I assume the creator is using the "weak" pull-ups built into the PIC. This may work ok, but may also be prone to noise pickup especially if the wires are longish.
Too bad he didn't seem to provide the source, or I could have easily converted it to run on a smaller, cheaper PIC that I happen to have on hand.
The Tiny URL's that you have posted, take us to the RS website, but it tells me that the session has timed out! You would be much better off posting the RS order codes for us to look at.
The search page for RS components was gone and a quick search didn't find an IR receiver module that can use. Google for "IR receiver module" and see what you can come up with.
Again the search page had disappeared, but they do have the chip, RS Stock no.
467-2255. The problem here is that you will need some way to progam the HEX file into the chip.
I don't what Rich Grise was talking about, nothing required me to register.
Mike
"The scientist is possessed by the sense of universal causation...His religious feeling takes the form of rapturous amazement at the harmony of natural law, which reveals the intelligence of such superiority that, compared with it, systematic thinking and acting of human beings is an utterly insignificant reflection." Albert Einstein (theoretical physicist)
If your goal is the learning experience, go for it. If you only care about remoting the thing, you could easily hack an old R/C toy car. You can still experiment and learn with the project as you outlined it, and you'll already be able to use xbox remotely while you play with the project. You'll have the hacked remote done in an afternoon with two relays, 4 diodes and a power supply. Conceptually:
+V -------------+-----+ | | ---o--> To xbox [RLY1] [D2] ^--o-->
Points A and B are the wires in the R/C car that normally connect to the motor. Run the car forward & RLY1 energizes and stays energyzed through its own open point and the closed point on RLY2. Run the car backwards, and RLY2 energizes, dropping out RLY1. The RLY1-2 contact set goes to the xbox.
I do have an 'Elvis' programmer which does PIC chips left over from when I used to play about with satllite TV, just need to dig it out and refresh myself how to use it !
My understanding is that the hex code will program the PIC to react to a given IR code (the 0 button and diplay buttons on the Xbox remote if I've read the xirremote site correctly) My plan is to download these codes into my learning remote so that I only need the one remote to control all my kit
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