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DIY GPS module for Yaesu VX-8DR/VX-8DE handheld transceiver.

This 8-bit ISA board will provide 4 serial RS232 ports using a single 16C554 controller. 2 ports are exposed on an external bracket and 2 are on internal headers.

24-Channel USB high voltage driver.

Design files, firmware and linux scripts for my /clever/ serial terminal, the Whitterm-220 - WT-220.

FTDI helper for the future. With FT230X, blinky lights and USB-C!