Low Voltage Shutdown using PiCrawler and Rasperry Pi 4B

Robotic kit for Raspberry Pi
1

Hi!
I just build a PiCrawler. But it has one expectional difference to the normal setup.
I used the robot hat from a PiDog which I bought already some month ago.
The PiDog was so far never assembled by me. I used the Pi 4B and the robot hat before just for testing purposes.

Anyway, the PiCrawler often creates a low voltage shutdown on the Pi4B.
For example while using the move.py in the examples-folder.
Is it expected, that the low voltage shutdown will happen with the robot hat of the PiDog?
I thought it might be more convinient for me to use this one as it has a charge function for the battery.

2
  1. Your PiCrawler’s Robot HAT is the battery-free version, which may cause the low-voltage issue you encountered (especially with weak battery power).
  2. If you use PiDog’s Robot HAT with PiCrawler instead, this problem should not occur under normal conditions.
  3. Note: Extremely low battery levels might still trigger low-voltage warnings.
3

I charged the battery of the PiDog Robot Hat completely. Still this issue exist.

4
  1. Does this issue also occur when using the Robot HAT with your PiCrawler?
  2. Could you please share photos of both Robot HATs ?