Controller board is using 18F6720 processor. See the schematic of the final version. Transistor Q1 and 8 LED diodes they serve adjustable backlight of the display 16x2 and 8 microswitches. P2 and P5 are prepared for functions, that are not implemented yet.
PCB for the controller 18F6720. Two layer board size is 150 x 46mm.
Front and rear view on the populated board. Both encoders are fixed on the board, too.
Side view on the populated board. MEC switches 3FTH9 with LEDs inside and 11.5mm long transparent caps (total hight above PCB is 19mm) are used for the DDS control. Display 16x2 is attached to the board over 5mm spacers.