JED Micro Single Board Computers using AVR CPUs

200JED single board computers use Atmel CPUs from the ATmega32 to the 100 pin
ATmega2560. They have up to 36 lines of protected industrial grade digital I/O with up to 16 channels of precision analog input.

Some have GPS and 802.11 transceivers on board, up to four RS232 serial ports and 8Mbyte Flash, MMC card and USB ports.

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The AVR200 board above is sold as a kit or assembled, and has 28 I/O lines, SPI  expansion and RS232/RS485. LCD displays and extra I/O connect via the buffered I2C and use a simple 10-way IDC ribbon cable with power and grounds.