A "pallette" for programming and reprogramming a Mozzi-based Arduino Nano v3 via USB.

Hex-Inverting Schmitt Trigger-based oscillator bank. Three of the sections of the CD40106 can be used either in free-running mode or with so-called hard-sync. The synchronizable sections are at higher frequency so as to be modulated by the lower frequency square waves generated by the first three sections. Square waves with a standard 50% duty cycle are output.