Making progress

A project log for Alternate Firmware for FG-100 DDS Function Gen

Reverse engineer the FG-100 pinout and develop alternate firmware that improves some of the shortcomings of the default firmware.

tim-savageTim Savage 10/12/2015 at 14:550 Comments

After a couple more hiccups with gcc-avr and optimisations I have a waveform being generated on a breadboard emulation of the FG-100 R2R DAC.

Dropping the micro controller back into the socket on the PCB:

Results in a nice waveform on the scope

With the basic proof of concept looking good, time to move onto frequency control, and getting the LCD/UI working.