I would need to link up
1. Touch Screen Display
2. Bill Acceptor
3. Thermal printer
4. Raspberry Pi
5. MDB to USB converter (for bill acceptor)
6. Numeric keypad
Firmware/ Front Programming
1. MDB USB module
2. Standalone app/ interface for raspberry pi
3. GUI for the standalone app
1. User use touch screen and key in unit number @ homepage.
2. Check internet connection with external URL
3. Request to retrieve data from server backend.
4. Server return data, display unit outstanding amount.
5. User insert cash into bill acceptor
6. Raspberry Pi validate the outstanding amount with bill acceptor.
7. Thermal printer generate receipt
8. Raspberry Pi communicate with backend server (HTTP POST JSON), store in backend DB. (If connection failed, etc no internet, will store the data in local DB, to be sync when online)
9. Standalone app returns to homepage.
We will be taking care of the backend, while i need your help to linkup the front end, and make it running. (Or you have better advice on using different hardware/ firmware)
PS: you will be signing a non disclosure agreement (NDA) before we working together, thanks
7 freelance font une offre moyenne de $458 pour ce travail
Greeting there , I could absolutely help you with your Vendings receive payment project i am very excited work on your project and help you get it done in short time About my experience : [login to view URL] Plus
hi brother How are you doing We have gained good experience in this field and we can provide you Good quality work within your timeline and budget Kindly send me a message so that we can start a discussion thanks
FREELANCER RECOMMENDED ------------------------------------------------------ Can help... I am an Expert in developing Raspi solutions... Lets Start! Please start a Discussion with me and we can get started from the Plus
Hello Sir, I have read your project description and I like the idea, the way you are doing it. As I have previously worked with raspberry pi and touch screen and developed few products on it. I can show you some samp Plus
Dear Sir, I would like to present myself as prospective candidate to do your project. I have sound knowledge in Electronic and Computer programming. I have knowledge in designing of Analogue and Digital electronic ci Plus
hello it's nice project you got there i once made a pre paid smart water meter for public usage, looks just like yours except that i never used a direct bill aceptor ( i used a mobile platform, user pays first, gets h Plus
Dear Sir, I am interested on this project and I want to share my expertise with you in this project. I am an electronics engineer and IT programmer with over 15 years of experience. I do design of embedded systems and Plus