How to program an coin acceptor

In this video I will show you how to program a multi coin acceptor, connected to the arduino as a 12v power supply.
All products was purchased on aliexpress.
Link of products:
-Coin acceptor: pt.aliexpress....
-Arduino uno: pt.aliexpress....
-Wires: pt.aliexpress....
-Power supply: pt.aliexpress....
My Instagram: www.instagram....
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[@marthera9441]

Grande Rodrigo!!!!

[@goranjosic]

Code pin counts (pulse) inserted coins, but what "counter" pin is doing?!

[@slownlow210]

Can this be set to give 1 pulse after 4 coins of the same amount?