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Registered Member #42796
Joined: Mon Jan 13 2014, 06:34PM
Location:
Posts: 195
I had the same problem as you - price I fond this on eBAY: which required a few additional parts because the output wasn't moving that much
or maybe that was because of my red LED fiber optic emitter...
The one you found can also work. What i advise is to test it in advance to see it it can drive a logic gate. If the output is to low use the circuit above
Registered Member #1316
Joined: Thu Feb 14 2008, 03:35AM
Location: Cambridge, MA
Posts: 365
I don't know what electronic component distributors you can order from, but Industrial Fiberoptics sells cheaper transmitters / receivers that use 1000um core plastic fiber. They are the cheapest transmitters / receivers you can get on digikey.
Loneocean's revision of the UD 2.7 driver board uses them as an option to replace the more expensive OPF-2412T or HFBR-2412T ST style receivers.
If you can order off digikey this is the pair you want:
Does the cheapness of these receivers make any difference performance wise?? Also, shipping to India is horrendously expensive!!! Could you please direct me to any other source for these receivers and transmitters??
Registered Member #195
Joined: Fri Feb 17 2006, 08:27PM
Location: Berkeley, ca.
Posts: 1111
performance is not an issue for the interrupter of the universal driver. farnell electronics is closer to you in Europe. you could also use a fiber optic digital audio cable from junk like a busted tuner. another option is to use a well grounded peace of coax and make a direct connection. what do you have available where you live.
Registered Member #58522
Joined: Tue Mar 15 2016, 08:33PM
Location:
Posts: 50
Here's an idea: get a red laser diode module and modulate that, and use a phototransistor to pick up the signal. Forget fiber optics, go free space! It will have to be aimed carefully, of course. I found the following on Amazon India:
Modulated Laser Diode
Photosensor
You might be able to adapt these for the interrupter signal. Go wireless!
Registered Member #30656
Joined: Tue Jul 30 2013, 02:40AM
Location: UK
Posts: 208
Or if it doesn't work - couple the diode/sensor through a piece of fibre!
If you do need to go for the TX/RX modules (and yes, we all complain about the cost, even in places where they're easier to get), then you may find that sellers on ebay/aliexpress offer cheap/free shipping worldwide.
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Regarding fiber optics
