How to make a coin changer with a pulse validator and logic hopper

Im trying to create a change machine bored and have no programming experience. If anybody has any suggestions I am open to paying someone to help me with this project. I have some logic controlled hoppers and pulse validators 50 MS on 50 MS off. I just need it to be able to spit out 4 quarters when it receives a pulse and stop after the 4th Pulse signal is received from the sensor. Also if it doesnt receive a signal from exit sensor to reverse polarity for 1 sec to clear a jam and continue. But disable if this happens 3 times. Also have a low coin limit logic low would disable the validator and light an led. Im also trying to interface with a current and be board that I have. Please contact me if you have experience with this.