DH8BQA’s Single-Button-Voice-Keyer PIC Project

  # PCB size 75 x 49 mm up to our analog sequencer boards. # The entire control needs to be done by a small PIC 12F629/675, to save space on the board (the 12F series has only 8 pins, but that only 6 possible I / O ports for input and output). # A…