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Hi,
I've searched around and haven't seen anything to point me in the right direction - but what I want to do is connect a B&O IR puck to a raspberry directly. I could power the puck separately, but would want to take the signal output and connect it to a GPIO pin on the raspberry - and read it with LIRC.
Anyone done anything like this?
this was already done by the user Alsfeld (see this thread).
But be careful because the raspbery tolerates only 3.3 Volts at its GPIO pins !!!!! The IR puck works with 5 Volts !
This can be cured with a simple voltage divider: Resistor with 2.2 K from the IR puck signal line to the wanted GPIO pin and from there with a second resistor 3.3 K to ground.
Edited to correct the link.
Ralph-Marcus
Thanks!
...although I get an access denied when trying that link.
The link seems to be broken. You can remove the / from the end and it works, but turns out it links back to this exact thread.
Related to the topic, I would be interested if someone knows of any current B&O-compatible IR receiver components that could be used with the RPi. The B&O IR puck wouldn't be ideal as I would like the receiver completely integrated in my project. People have been using something called TSOP7000, but it's no longer being made and therefore not easily available (correct me if I'm mistaken here).
Another thing that's of interest would be pairing the Essence remote (or BR One BT) with the Pi over Bluetooth, but that's probably a topic for another thread.
— Tuomas | Bang & Olufsen | Bang & Olufsen Create
I am steering my RPi over the ATV PUC from my BV. If this is what you are interested in, I can help sharing how I have set it up. It works very well and I am happy with this setup.
tph: Related to the topic, I would be interested if someone knows of any current B&O-compatible IR receiver components that could be used with the RPi. The B&O IR puck wouldn't be ideal as I would like the receiver completely integrated in my project. People have been using something called TSOP7000, but it's no longer being made and therefore not easily available (correct me if I'm mistaken here).
Presume you could remove the IR sensor (TSOP7000 or equivalent) from an old (broken?) piece of B&O eqpt - an MCL receiver for example.
TSOP7000 is indeed discontinued, but i'm sure many sources still have it in stock.
I don't think any B&O products actually used it - most have the functional equivalent built from a photodiode and couple of dozen discrete components (the circuit is in principle very similar to an AM receiver!). More complicated but also much more sensitive than the integrated 3-pin solution.
A Beovision doomed to the bin would be a good donor for the module, if you want to use that. In an MX/LX it is usually conveniently on a small separate PCB.
--mika
Vishay TSOP7000s are available via eBay at about 8€ each, but aren't as good as the discrete logic of the puck. I recall someone did get one working but needed a capacitor in the mix to get a clean output.
http://www.ebay.co.uk/itm/TSOP7000-IR-Receiver-for-High-Data-Rate-PCM-at-455-khz-3PIN-/192017602391?hash=item2cb5241757:g:1PAAAOSwcLxYG0QH
sorry to reply to late.
But this is the correct link i menat in my first reply: correct link now
tournedos: TSOP7000 is indeed discontinued, but i'm sure many sources still have it in stock. I don't think any B&O products actually used it - most have the functional equivalent built from a photodiode and couple of dozen discrete components (the circuit is in principle very similar to an AM receiver!). More complicated but also much more sensitive than the integrated 3-pin solution. A Beovision doomed to the bin would be a good donor for the module, if you want to use that. In an MX/LX it is usually conveniently on a small separate PCB.
Thanks for this, I'll look into it. I realised my Beolit 12 should have a compatible receiver I don't use anyway, so I may dig that out and see if it works. Also need to find a Beo4 from somewhere
@ramabo,
The two resistors did the trick, setting the PUC output on the beosystem 3 to be cable with no modulation.
thanks