[mythtv-users] Sky Digibox Tip

[steve at nexusuk.org]

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On Sun, 15 Feb 2004, Richie Jarvis wrote:

> Your page is great Steve - however, I was wondering (when I looked at 
> it) which circuit you used?  there are now 2 on the LIRC website.  Also 

For the transmitter I used the diode, resistor and LED connected between 
DTR and ground.  Didn't see the need for the amplified one - the LED is 
mounted right on the front of the sky box so no huge amount of power is 
needed, and you won't blow a serial port even if you short the whole thing 
out since RS232 ports are all buffered and current limited (or at least if 
you do blow it then it must've been a really badly designed port :)

> - do you have the actual part numbers for the circuit?  Its been a long 
> time since I built anything like this, and part numbers (from Maplin or 
> someone) would be a boon.

I'm afraid I don't have the part numbers I used - it was built out of 
components I had kicking around anyway.  A quick flick through the Maplin 
catalogue shows these should do the job though:

Code	Description		Price
- -------------------------------------
YH70M	Infra-Red Emitter	0.49
QL80B	1N4148 Signal Diode	0.08
M1K	1K Resistor		0.07
RK61R	D 9-way Socket		0.79

I can remember that the IR receiver circuit has a receiver IC that was 
bought from RS because Maplin didn't do them (Maplin have really gone down 
hill - 6 or 7 years ago they sold absolutely everything).

- -- 

 - Steve                                             http://www.nexusuk.org/

     Servatis a periculum, servatis a maleficum - Whisper, Evanescence

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