Beolink Passive IR eye

65 replies
Just bought an Beolink Passive /ML-MCL converter. Have already tested that it works as and ML-MCL converter, and also just as an amplifier for passive speakers when connected to a powerlink output. So just wan't to find out if the Beolink passive part of it also works and am going to wire up an IR eye. I have one extra IR eye, the rectangular type from and MCL2A/MCL2AV and was wondering if it can be connected. Loooking at the wiring diagram  for the IR eye to the Beolink passive I can see that at least, Ground, +5V and IR is named the same, though with other wire coloring, but I think I can manage to see through that. But the there is the two connections called SCL,I2C and SDA,I2C. I haven't found the naming for the MCL2A/AV IR eye in documentation, but On the MCL2AV PCB the two other connections are labeled BUS and CLK. I assume that might mean they are not the same type of signals? So will it work, maybe only partly If I only connect the ground, +5V and IR? Thanks in advance for any inputs

Location: Denmark

I think it's worth a try with just ground, 5v and IR and I think it will work. I have had good results mixing IR sensor with just those connections: I have used both VX sensor (old rectangular shape) and a BS3 sensor (circular) with my Beoport, for instance. I also successfully connected both those sensors to a LC2 in place of the IR board and it worked. With regard to the other two connections, maybe SCL to CLK and SDA to BUS? I would think there's a low risk of damage (but equipment may lock up until power is recycled) but then it's not my equipment! Looking forward to hearing results!

Location: Warwickshire, UK

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Digging back through my photos and the old forum I remembered that I had already mentioned using a VX sensor with ML devices: This was the thread:  

Location: Warwickshire, UK

My B&O Icons:

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Thanks for the input. Will try to wire up a cable, and great Idea with and adapter, Have actually also thought of making something for easy unplugging of the IR eye on the MCL2AV boxes, so might as well make a solution that works for more units.  

Location: Denmark

Ok, took some time to get here, had resolder some adapters to get hold on some 7Pin din connectors that wasn't nessecary where they was used. Tried hooking the rectangular IR eye from the MCL2AV up with just the three wires for ground, 5V and IR. And it's working. I can control my Beocord 3500 through 1611 + MCL2AV (with no IR eye), the mute button on the IR eye works, and holding it in for a couple of seconds make the system go to standby. The time butto makes the red light turn on, so I suppose this function will also work? Tried hooking up the 2 remaining wires, but had no effect on the functionality from what I could test. I wonder if they only are for 2 way functions? I also remembered I had a round IR eye that is used wtih my Beoport without any markings on the buttons. Will try to connect that and see if that also works.

Location: Denmark

Tried to disconnect the yellow and grey wire SCL,I2C and SDA,I2C in the round IR eye. All remote control functions still working, but no lights, and no button functions working, so thats what they are for in the round version.

Location: Denmark

Interesting stuff!  So the 'round IR eye with no markings on the buttons' is internally probably just a normal ML sensor, which usually has Timer at the top and Play at the bottom.   I have one, and just thought of it as a BS3 sensor (or Beoport sensor), although the buttons did indeed click I didn't realise that they might work! Here's mine inside: (picture previously posted in my LC2 repair thread) EDIT:  Just for reference, Yellow and Grey would be the (missing) connections 1 and 2 in my sensor. EDIT 2:  And connection 4 would be White, in a 'normal' ML sensor.

Location: Warwickshire, UK

My B&O Icons:

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Beoplay-Form-2i.png Beoplay-Form-2i.png
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Location: Warwickshire, UK

My B&O Icons:

BeoCenter-9500.png BeoCenter-9500.png
Beoremote-Beo4.png Beoremote-Beo4.png
Beovision-10.png Beovision-10.png
Beotime.png Beotime.png
Beosound.png Beosound.png
Beosound-Explore.png Beosound-Explore.png
Beosound-Essence.png Beosound-Essence.png
Beoplay-P2.png Beoplay-P2.png
Beoplay-M3.png Beoplay-M3.png
Beoplay-H4.png Beoplay-H4.png
Beoplay-H3.png Beoplay-H3.png
Beoplay-Form-2i.png Beoplay-Form-2i.png
Beoplay-Earset.png Beoplay-Earset.png
Beoplay-A2.png Beoplay-A2.png
Yes it is probably the same one for a group of different products, but with different wirering and button front. Of course there is the mute anomily but I wonder if that could be related to my Audiomaster not being ML, and/or new enough software version. It was the type 2020 MCL2AV I tried with, so might also try with the newer on to see if the behaviour is any different.  

Location: Denmark

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