Power Distribution to multiple Arduinos

Using Arduino Project Guidance
1

Hello,
Relatively new Arduino user here,

I plan on using multiple Arduino Uno's for a project and need to power them from a single 12V battery. In the end, once done prototyping, part of this project will be made into a PCB. With this in mind I have a few questions,

  • Ive looked into this Power Distribution Board, however, due to size constraints in this project I am unable to do so, are there smaller alternatives that I could use?

  • As I mentioned earlier, this will be made into a PCB, another way I was thinking could work is and would be ideal for my situation would be to implement a power rail into the PCB as shown below:

    Screenshot 2022-05-09 214111
    Screenshot 2022-05-09 214111915×594 46.3 KB

My apologies if any of these questions seem dumb, just trying to learn and explore different methods.

2

Suggest you use Arduino Pro Minis, program them with an FTDI.

Mount them on something like these, They have power rails.

image
image679×544 138 KB

3

Will definitely look into it thank you very much! With the pcb boards you suggested, I see they have power rails, does this mean that the power distribution idea I had in the screenshot attached work out then in terms of sending the necessary voltage to each Arduino? I think the word I'm looking for is would the Arduinos be in parallel?

4

Yes, you connect DC to DC converter +5V to one rail and 0V (GND) to another rail.

The 5V and GND pins of each Arduino connects to these rails.

Note, when using the 5V pin on the Arduino, DO NOT connect the USB cable to your PC.

I suggest you use Arduino Pro Mini (an FTDI interface is used to upload the sketch to these boards):

arduino-pro-mini3
arduino-pro-mini3581×506 78.3 KB

5

Why on earth would you do that? :astonished:

6

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