Epyon
Well-known member
A quick question that I always wondered about (and that only Paul will be able to answer presumably). When making a PCB that will accommodate a T3.X and provide external 5V input to VIN, is it best to ground both pins or does only one suffice? I'm asking this because on my current design the 'bottom' GND pin (next to Program) is easily connected to my PSUs ground, but the topleft GND pin (next to RX1) will need a trace that will add a bit more length (and thus impedance) to it. It's best practice to ground devices on only one point (star topology), but I have no idea how the ground plane on the T3.X is poured.
I don't plan to drive anything high power with it, but it may get a Wiz820io stacked on top of it.
I don't plan to drive anything high power with it, but it may get a Wiz820io stacked on top of it.