We actually have a card system for laundry and we want to develop our own since our intention is to grow.
This is what we desire.
Chip in the card will only store card number, and last name
The card reader for every machine will have a display that shows the balance, and the last name of the user.
the reader will allow to check your balance without discounting money. So after showing the balance it has to perform a 3-down count, After that then give the start signal. (show again the new balance)
Balance is stored in the computer so a program will be in charge to do the balances updates.
The cards readers will be conected to the computer with the database
Can bus is desired for the card readers network
To add money to your balance the user have to go to the cashier desk with his card and handle the money. So we need a reader connected to the computer so we can do that.
The reader in the desk also has to show the balance so the user can see the old balance and the new balance
Assyncrounous serial port is desired to comunicate with the pc
It should be able to have network of an average of 60 machines.
We have a prototype of the software we are actually running. It can be provided to show you what are our needs.
16 freelancers estão ofertando em média $2600 para esse trabalho
Hi, Our team is expertized in the designs of the embedded systems and its related software. We can handle this project and deliver an efficient solution according to your requirement. Regards, Geo
I am an Layout PCB Engineer located in Mexico with a very good experience in PCB design, shematics, Bill materials, gerber files. My refereces is products of consum and equipament audio,medical,supply power
Sir, we are a team of embedded engineers and have experience in smart cards, C#, FPGAs and microcontrollers. We could accomplish your requirement through COTS.