(01-26-2024, 04:50 PM)hifinet Wrote: I should mention that the stacking header with pins 2 and 4 removed provides a reversible solution for the Ian Canada reclockers.
For an irreversible solution, simply remove pins 2 and 4 from the ProtoDAC GPIO header (before soldering). That way you always need to apply power to the 5V and GND pads of ProtoDAC. I think the green screw terminals can be soldered there.
Hi Mark,
I just built the protodac, hooked it to RPi4 and its glorious. Now I want to incorporate IanCanada's PurePi, Q7 to it. Will this connection schema work?
1. Stack RPi on PurePi. Power the PurePi with a 5v power supply (RPi is therefore powered by PurePi pins underneath and doesn't have its own external power supply)
2. Q7 stacked on RPi GPIO. Q7 is powered from the 3.3V supply of PurePi (J2) using standard jumper wires.
3. ProtoDAC stacked on the isolated GPIO of Q7 (using a stacking header with pins 2 and 4 removed). Use jumper wires from PurePi 5V terminals (J6) to ProtoDAC 5V and GND pads.
When you say remove stacking header pins 2 and 4, should I just clip it/break it off?
I'm ok with RPI4 and ProtoDac sharing the PurePi 5V power. I'm hoping thats not going to be an issue.
