Arduino Mega
If you are looking for a development board for a more complex project, the Arduino Mega 2560 is for you. Ideal for use in 3D printing and robotics, this handy bit of kit is based on the ATmega2560 Microcontroller, and can be used both standalone or connected to a PC. Amongst other fantastic features, with 54 x digital I/O pins, 16 Analogue inputs and 4 UART, it will certainly keep you busy.
£34.09