I saw their website was still active a year or two ago after I found out the owner had died. Thinking someone had taken it over, I ordered some stuff. No communication and no merchandise. I should have called first but didn't. PayPal refunded my money.Seems like you can still buy stuff: http://northlightdmx.com/DMXtoRelay.htm
You can try something like this but I like the timer circuit trigger idea better as it would appear more reliable.
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You like the 555 or the coin op?You can try something like this but I like the timer circuit trigger idea better as it would appear more reliable.
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Need a card reader version.You like the 555 or the coin op?
Yep, good ol' Forrest Mims, circa 1996. Here is my collection:Do tell... is that a page out of a Forest Mims Radio Shack book?
I think I still have one somewhere.
Chain the pulse that activates the relay to trigger a good ole 555 timer. The timer would switch everything off if not tickled before your pre determined interval.
Fun to cobble together, but I'm not sure I'd want to trust my show to MY work in this regard.. YMMV.
or use this as the sending signal from the booth to raise money to pay for the commercial solution
https://www.amazon.com/dp/B08VJ7KB85/?tag=controlbooth-20
I tried this and it didn't stop the chattering, BUT, I changed the capacitor to 10mfd and it seems to work great...very solid relay triggering.Need a card reader version.
Here is a better way to add time delay to circuit:
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Hah, it's good to know it works with 10mfd cap. Something else that should increase the time delay is adding a diode to the output of the the op-amp. As it is now, when the circuit is in the "off" state then the capacitor will discharge through both the transistor and the op-amp. Adding a diode should make it only discharge through the transistor and add to the delay.I changed the capacitor to 10mfd and it seems to work great
Yep, adding the diode does appreciably increase the delay. Thanks for continuing to think about this!Hah, it's good to know it works with 10mfd cap. Something else that should increase the time delay is adding a diode to the output of the the op-amp. As it is now, when the circuit is in the "off" state then the capacitor will discharge through both the transistor and the op-amp. Adding a diode should make it only discharge through the transistor and add to the delay.
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