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Coin Mechs - Multiple credits
Druin:
Here is a sketch of the concept I'm proposing - already many details come to mind but again it's just rough thought...I've left out minor details like an inverter maybe needed here and there, pull up or pull down resistors, maybe an R-C filter for noise/bounce handling on inputs...but that's rubbish. If I can't be found around here for a reply, come find an email link at http://connect.to/rotary
novyan:
wow!
Is exactly what I've been looking for ;)
But as a beginner in electronic, a schematic would be much usefull though :D
O, what about the opposite case, like insert 4 coin gives 1 credit?
Thanks a lot.
Trimoor:
What you want can be done with just two chips; a 555 and a 4017 decade counter.
The 555 clocks the decade counter continuously.
The DC counts up until it reaches 5, which is connected to the enable pin. This freezes the counted until reset is pulled low by the microswitch. The DC then pulses sequentially on 1-4, stopping on 5 again. Just tie all four outputs together with some diodes.
Here is the 4017:
Can you figure out a schematic from that? Or shall I make one for you?
Edit: the opposite can be achieved as well. Use the microswitch as the clock input for the 4017, then attach the KB input to output 4.
novyan:
--- Quote ---What you want can be done with just two chips; a 555 and a 4017 decade counter.
The 555 clocks the decade counter continuously.
--- End quote ---
O That's superb!
--- Quote ---Can you figure out a schematic from that? Or shall I make one for you?
Edit: the opposite can be achieved as well. Use the microswitch as the clock input for the 4017, then attach the KB input to output 4.
--- End quote ---
I am so excited now :D the schematic would fill my empty barin. Yes, the schematic please.
Thank you so very much!
Trimoor:
Here's a circuit, but I don't know how good it will be.
I don't know if the outputs will have a suitible low output. (it might need capacitors)
You'll have to find your own 555 circuit. I can't figure out how to design a good one. (I should...)
The thing is so simple that you just build it and I could help you troubleshoot.
You don't even need a 555 for testing.
Oh, and why won't the macro function work? Seems like it would work.
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