Obviously a FG-100 (ebay is a good source) ATMega328p 28pin DIP microcontroller AVR programmer/ISP (the Makefile defaults to using a USBTiny ISP) AVR toolchain (eg avr-gcc, avrdude and gnumake) ...
For the purpose of this project, it has been overclocked to 168MHz, running with the Fastest Pure Code+LTO optimizer It has two integrated DACs whose output can vary between 0v and 3.3V Using ...