0
$\begingroup$

[please dont downvote, just let me know what infos are missing]

I built my second robot and I always end up with the same issue ...

The CPU board always resets when a high rush of current is demanded by the motors from time to time.

I use one battery to feed:

  • a Raspberry PI 4 (had the issue with an Odroid board)
  • 9V/12V motors
  • RPI usb devices (webcams, audio , lidar...)
  • arduino micro + pololu mc33926 H bridge

how can I avoid this CPU reset ?

  • adding a capacitor on the CPU board side or something ?
  • adding a secondary battery ? which means more weight (my LiIon is 200g, I now use a power bank, it's 400g)
  • splitting USB connected devices power to avoid the PI providing 5V to peripherals ?
  • something else I have'nt thought about ?

The powerbank has multiple outputs, not clear if they can be used simultaneously ?

thanks for your inputs


setup:

I use 3 x 2577 buck dc-dc to power

  • RPI with 5.1V 3A
  • 5V for gen purpose power
  • 9V for 2xlego PF XL motors

power supply:

  • Romoss Sense 6PS Pro 20000 mAh Power Bank, PD 30W
  • Aideepen Type-C USB-C PD2.0 PD3.0 duper to get 5V/5A (in theory)

https://www.reichelt.com/be/nl/ontwikkelaarsboards-spanningsomvormer-dc-dc-lm2577-debo-dcdc-up-1-p282581.html

https://www.amazon.com.be/dp/B08FD6381L?psc=1&ref=ppx_yo2ov_dt_b_product_details

https://www.amazon.com.be/dp/B0B4JCCG9V?psc=1&ref=ppx_yo2ov_dt_b_product_details

$\endgroup$
3
  • $\begingroup$ You will have more success asking this question on the electronics' StackExchange forum. $\endgroup$
    – ssarkar
    Nov 9, 2023 at 8:42
  • $\begingroup$ since when robotics are only about software ? but thanks for the tip $\endgroup$
    – phil
    Nov 9, 2023 at 9:00
  • $\begingroup$ electronics.stackexchange.com/questions/688398/… $\endgroup$
    – phil
    Nov 9, 2023 at 9:03

0

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.