Hi,
I have had my Pidog for 3 days and he was doing well until this morning when I noticed a servo stops working, then the entire dog just starts vibrating and shuts down even with a simple command (stand, sit).
What could be the possible causes for this? Can it be that the robot hat malfunctioned?
Thank you.
It did same for me, head and front legs the first couple of times i run wake up script, i think it stopped when i figured out i should end running script with ctrl c instead of closing or maybe its just a matter of breaking in the servos… it stopped after a while anyway.
The Rpi actually rebooted each time this happened so I couldn’t Ctrl C to stop the script. I bought the kit from Amazon so I still have time to exchange for a new one or return, but I’d like to fix my Bear first before doing that.
Is it a dead battery? Also you can try unplugging the non-working servo port wiring and see if the other functions work.
So I think there are 2 separate issues:
The robot hat charging light was off (fully charged) in all cases.
How can I solve these problems?
Regarding the issue of insufficient power supply, does the HAT power indicator on your pidog show sufficient power, or use a multimeter to measure the voltage at both ends of the battery connector, 0~100% of the battery capacity corresponds to a voltage of about 6.0v~8.4v.
The batter was fully charged when we measured the voltage. One measurement is 8.08V (08.08V on the screen) and one is 2.65V.
Do you have two batteries, does the one around 8v work fine? Can the other 2.6v battery be charged in? I’m a little confused, can you take videos for us to show how it works.
No, I followed the instructions here: Pidog - Reading battery voltage is 5.1 V - #11 by SunFounder_Moderator
The 2 readings are from 2 sides of R6.
It is recommended to provide a video of the problem for us to see, so that we can analyze and solve the problem.
If it is a hardware problem, we will send you a replacement.
Hi,
Sorry for the delay in responding to you. I have had a crazy busy week. Please see the videos here: Microsoft OneDrive
Thank you!
It’s possible that your left rear servo didn’t do the back to zero adjustment assembly, causing the servo to get stuck producing output high current when you run the example, and the Raspberry Pi will appear to shut down again.
We suggest you follow our assembly video to install the servo back to zero, then do the servo calibration, then run the example to see how it works.
https://docs.sunfounder.com/projects/pidog/en/latest/assemble_video.html
I did zero them all multiple times because initially we didn’t understand how the servos and zeroing worked. Then we got it and the robot was working fine for a day then it started having problems. Please see this video of Bear doing patrol on the first night.
Do you work with the battery fully charged and still have the same problem as before?
The left rear leg servo won’t stand up right.
The battery voltage measurement you provided earlier is normal.
It may be that the servo is the problem, you try to fully charge the battery and run the example again to see how the pidog works as a whole.
If the pidog still can’t work as expected, we will send you a replacement pidog to see if the problem can be solved.
The videos I recorded were when the robot was fully charged. I even bought a RaspberryPi official charger to make sure the voltage is right. Thank you for your help. I really don’t want to reassemble another Bear but I did try everything and it stumped me that Bear worked normally for a day and then the power issue started.
Please contact our after-sales email: service@sunfounder.com
The after-sales team will resend you new servos to see if it solves your problem.