Companion Sheild
The entry level shield is labelled The Companion Shield. This is a PCB laid out in the pattern of a solderless breadboard. The holes are single sided, which means that components can easily be removed using solder mop braid, or a solder vacuum tool, if a mistake is made, or components need to be re-used.
The (PBP3) Companion Shield Manual iCan be downloaded from here
See the Companion Shield in our on-line shop
Menu
Re: FSK demodulator in firmware
more fully.
richard - 13th October 2025, 05:48zcd is NOT particularly useful for this project since it cannot drive a timer gate directly or be a capture source for any of the pic chips that my crusty old version of proteus can...