We would like to build system to manage Rent Electrical Device by time. Customers buy a card (magnetic or smart card) refillable and when use it in device it will work for #of minutes depends on the amount of minutes in card. For example I’ll refill card for 120 minutes I can use it many times until my 120 minutes finish, each time I use it only the exact # of minutes will be deducted from the card.
System from 2 main parts
1- PC software to manage cards and refill.
2- Card reader with relay controller to open relay until # of minutes in the card finish.
1- Relay control circuit driven by microcontroller to read # of minutes in the card and deducted the minutes while the relay is open when card removed or balance finish the relay switched off
2- PC software to refill cards. Enter # of minutes and read card balance.
Please review this project, asks if you need more info, make your bid with description what you will do.
16 freelancer bu iş için ortalamada 1255$ teklif veriyor
I am an Electronics Engineer esp. with micro-controllers , Instrumentation, and telcomm. I am interested in your project. Awaiting your response.