Helion Microsystems has a quick and simple USB interface board designed for any home project or development project. The PCB features the HU-320 USB interface IC chipset, and exposes all functions to the 30pin connector of the board. The PCB also features a software switchable adjustable linier power supply for powering attached circuitry.

Feature List includes:
All USB interface requirements
- 20 Digitial IO pins
- USB-SPI Master / Slave Interface
- TTL UART
- USB-I2C Master Interface
- PWM Source
- HD44780 LCD interface
- 8MHz buffered clock source
- 5V USB Power supply
- 3.3V Power supply
- Software switchable adjustable power supply
- Indicator LED
- PCB measuring 58x45mm
- Robust USB-B Connector
The HU-320 is $39. Visit the factory website for more details. USB Interface board, HU-320.