Be gentle with me. I have two identical PCBs (they are USB powered media players). I'm trying to sync response from a single IR remote control. I'm wondering, is it possible to detach the IR sensor from unit one and connect the sensor from unit 2 to both boards? I can't find an answer to this anywhere (which may well be answer in itself). Thanks in advance.

 

Hi GB. bon jour.
How close are the two PCB's ie: distance apart.?
E

 

Hi GB. bon jour.
How close are the two PCB's ie: distance apart.?
E

Immediately next to one another. However, unless I find a super sweet spot, using a single remote sender leaves the units out of sync. Merci for your speedy reply

 

hi,
OK.
I don't see a problem, with using one of the RX detectors to control two PCB's.
Carefully remove one of the RX modules and link across the 0V and the Signal line from the other PCB

E

 

Eric,
Thanks again. I'm a complete novice. Is there a way to easily identify which is the signal line and 0V using a test meter?

 

hi,
Can you post a photo image of the PCB showing the IR receiver section.?
E

 

hi,
Can you post a photo image of the PCB showing the IR receiver section.?
E

E,
I included some images in the original post.
G

 

hi,
Saw that, but it appears the copper tracking is on the other face of the PCB.?
E

 

Just a quick note that maybe it would be better to use something like this rather than modify the circuit board. It is an IR repeater, the cables with the round bits have little emitters on the end that go over the IR receiver on the equipment and the one with the box is a receiver. There are a variety of options like it, I chose this one at random. It would seem to be a simplet, less fraught way to do this.

​

 

hi,
Saw that, but it appears the copper tracking is on the other face of the PCB.?
E
View attachment 261358

Sorry Eric, life in got in the way for a moment. I attached a series of three pics. I've reposted the one that shows the reverse of the PCB and the IR sensor.
G

 

Hi Gary,
It is difficult to be sure, but this image shows what I think how the pins are connected.
You could check with a voltmeter the Ground and Supply, the Signal out will be the 3rd pin.

E

 

Hi Gary,
It is difficult to be sure, but this image shows what I think how the pins are connected.
You could check with a voltmeter the Ground and Supply, the Signal out will be the 3rd pin.

E
View attachment 261544

Thanks Eric. Away til the weekend. Will have at it then and let you know. Thanks so much for taking the time to reply.
G

 

Just a quick note that maybe it would be better to use something like this rather than modify the circuit board. It is an IR repeater, the cables with the round bits have little emitters on the end that go over the IR receiver on the equipment and the one with the box is a receiver. There are a variety of options like it, I chose this one at random. It would seem to be a simplet, less fraught way to do this.

View attachment 261359​

Thanks Yakov. I had considered this but was not sure of latency across devices as I'm trying to sync them. G

 

Thanks Yakov. I had considered this but was not sure of latency across devices as I'm trying to sync them. G

Since they are on the same cable I suspect the emitters electrically parallel so, 0ms latency.