Hi I haven’t programmed since old basic… I’m just looking for some demos or samples to build a counter that can increase from a digital input. Then when a button is pressed the counter decreases by 1, display the counter value on a 2 line display. My ultimate goal once I learn these basic is to m…

[image] rolly23: Then when a button is pressed the counter decreases by 1, Press button pulse-on-true decreases by 1 , if need decreases continuosly used flip-flop for enable or disable clock.

Yes but only works the once. for example 9 becomes 8… but then counts up again, but the button wont reduce the count

Given your description, this is probably exactly what you want. If someone inserts more coins, you want the credit to increase again. The only reason it keeps increasing now is because you have it connected to a clock (that never stops) instead of a coin counter. Note that there is a subtle bug in …

The first sample was counting but the button wouldn’t repeat its function. Does it need a repeat function

Do not take these examples as a program, they are just simple ideas of how to connect some nodes.

I wouldn’t think the coin value would be any greater then $10 when $2 / photo. I’ll give it a go tomorrow as it late here in Oz. I’ll try once the counter is greater than 2, it then puts a relay high to activate the release button circuit. Once it falls below 2, it deactivated. I’ll then add a t…

I understand. I just don’t know how to make the button function work again once its been fired.

My quick test had no resister. I’ll re try

Total Newbie and not sure what to search for

cesars March 25, 2019, 2:02pm 12

every time you pulse you must activate, if not active, maybe you are missing a pull-up resistor

Coin Acceptor Module

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Total Newbie and not sure what to search for

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