Pololu Development Boards and Sensors
The Pololu A-Star microcontroller boards are general-purpose programmable modules based on Atmel AVR microcontrollers. A USB interface and preloaded Arduino-compatible bootloader on each A* makes it easy to get started programming them.
The Pololu P-Star microcontroller boards are general-purpose programmable modules based on Microchip’s PIC18F25K50 and PIC18F45K50 microcontrollers. Each P* ships preloaded with a USB bootloader, so no external programmer is required.