Analogue ports, timers, UARTs, and clock generators ... frequency synthesiser on many PIC microcontrollers, and he’s produced a handy square wave generator for which he’s placed code ...
The SI5351 is a programmable clock generator. It can output up to eight unique frequencies at 8 kHz to 133 MHz. This makes it a handy tool for building up RF projects. [Jason]’s breakout board ...