power for multiple arduinos

[Biggus]

12 hours ago, JohnnyChicago said:

I am using these breakout boards , is that the resistor on R7 ? Should i remove these (leave open)  on all boards except the last one ?

(Sorry for hijacking this thread)

 

Yeah, R7 is the one to remove.  You'll want to keep that resistor on the ends of the bus.  So one at the last device and one at the master.  These breakout boards are one of those rare cases where I'd prefer to just use the bare chip and add my own biasing and termination resistors, not to mention being able to place the caps closer to the IC power pins.

This post is a wealth of information.

[TonyG]

On 1/21/2025 at 10:55 AM, sharkfin61 said:

On 1/21/2025 at 10:55 AM, sharkfin61 said:

May I ask you, how powerful your PSU is?

I have an 850w in the computer and a dedicated 1000w running the pit and supplying the 5v for the hubs.