Hi, I’m pretty sure the answer will be “yes” but strange thing happened yesterday when I try my project for the first time on a real pcb I made.
My first prototype was made using a prototyping pcb (pre-made trace). Everything is working fine. There is one copper trace for my ground and everything is soldered on this trace with wire.
On the PCB I designed, I wasn’t able to have everything linked directly to the power source’s ground.
My Nano board, and some componant are grounded directly to the power source’s ground with a trace BUT I have a NRF24l01 Radio which is grounded on the other Gnd Pin of the nano (because I can’t find a way to link the copper trace to the power source directly.
My question is: Is it ok to use both Gnd pin like I did to ground every component of the PCB? (assuming that both Gnd pin are connected together and one is grounded with the power source)
I’m asking because, using a multimeter, my power source is 5v regulated (powering the nano by the 5v pin, as written of arduino.cc), when read voltage at the 3.3vpin directly I read 3.2v and at the nrf24l01 pin I read 1.26v ?? (I know the 3.3 pin is not the best for a NRF but how can it drop like that?) So I tought because my nrf24 wasn’t grounded directly to the power source it can affect the voltage.
Thx if someone can help