STEVAL-IPC002V1

STEVAL-IPC002V1 demonstration board is a battery operated hand held parking ticket vending machine system with a thermal printer interfaced with the STM32. The objective of this demonstration is to generate and print parking tickets for different types of vehicles. The system can be easily modified for other applications that require paper printing directly from the microcontroller, such as PoS based applications, railway/bus ticket printing and stand alone printers. The thermal printer has an in built stepper motor for thermal paper feeding, paper movement, and so on. The stepper motor is controlled by a dedicated stepper motor driver with an SPI interface. The system operates on two Li Ion batteries and an optional DC adaptor. On board battery chargers are available to charge the batteries from the DC adaptor. The data to be printed is entered by way of touch keys, and can be verified on an alphanumeric LCD.

• Thermal printer interfaced through SPI2
• Stepper motor driver interfaced through SPI1 used to rotate the printer head while printing
• S-Touch based keypad for user interfacing. S-Touch controller device is interfaced through I2C2
• LED indication for battery status
• On board JTAG connector for firmware upgrades and changes
• SPDT switch for switching the system ON and OFF, Push button switch for resetting the system
• Thermistor to monitor the temperature of the thermal head
• Rechargeable battery circuit
• STM32 in built RTC that provides date and time of printing
• EEPROM interfaced through I2C1. The last 20 vehicle numbers are stored in the EEPROM

Applications

Portable Devices, Consumer Electronics