# Pydog just starts shaking and shuts down with every command **URL:** \ **Category:** Robotic kit for Raspberry Pi\ **Created:** [January 31, 2025, 5:41pm UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555 "2025-01-31T17:41:44Z")\ **Posts on this page:** 16\ **Page:** 1
**Author:** ![bearsmom](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.sunfounder.com/bearsmom/32/1303_2.png) [@bearsmom](https://forum.sunfounder.com/u/bearsmom)\ **Post date:** [January 31, 2025, 5:41pm UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/1 "2025-01-31T17:41:44Z")
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. ---
**Author:** ![Johan.se](https://avatars.discourse-cdn.com/v4/letter/j/258eb7/32.png) [@Johan.se](https://forum.sunfounder.com/u/Johan.se)\ **Post date:** [February 2, 2025, 7:19pm UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/2 "2025-02-02T19:19:57Z")
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. ---
**Author:** ![bearsmom](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.sunfounder.com/bearsmom/32/1303_2.png) [@bearsmom](https://forum.sunfounder.com/u/bearsmom)\ **Post date:** [February 3, 2025, 2:06pm UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/3 "2025-02-03T14:06:23Z")
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. ---
**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\ **Post date:** [February 4, 2025, 8:06am UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/4 "2025-02-04T08:06:17Z")
Is it a dead battery? Also you can try unplugging the non-working servo port wiring and see if the other functions work. ---
**Author:** ![bearsmom](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.sunfounder.com/bearsmom/32/1303_2.png) [@bearsmom](https://forum.sunfounder.com/u/bearsmom)\ **Post date:** [February 5, 2025, 4:47pm UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/5 "2025-02-05T16:47:29Z")
So I think there are 2 separate issues: - The raspberry pi doesn’t have enough charge from the battery (what could be the reason for this?). If I plug the charger to the RPi charging port, I can execute the functions without it rebooting. - The servos on the left legs are malfunctioned. I unplugged it as instructed and the rest of Bear worked fine. The robot hat charging light was off (fully charged) in all cases. How can I solve these problems? ---
**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\ **Post date:** [February 6, 2025, 8:39am UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/6 "2025-02-06T08:39:02Z")
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. ---
**Author:** ![bearsmom](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.sunfounder.com/bearsmom/32/1303_2.png) [@bearsmom](https://forum.sunfounder.com/u/bearsmom)\ **Post date:** [February 7, 2025, 12:12am UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/7 "2025-02-07T00:12:45Z")
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. ---
**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\ **Post date:** [February 7, 2025, 7:28am UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/8 "2025-02-07T07:28:18Z")
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. ---
**Author:** ![bearsmom](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.sunfounder.com/bearsmom/32/1303_2.png) [@bearsmom](https://forum.sunfounder.com/u/bearsmom)\ **Post date:** [February 7, 2025, 1:13pm UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/9 "2025-02-07T13:13:27Z")
No, I followed the instructions here: [Pidog - Reading battery voltage is 5.1 V - #11 by SunFounder\_Moderator](https://forum.sunfounder.com/t/pidog-reading-battery-voltage-is-5-1-v/1658/11) The 2 readings are from 2 sides of R6. ---
**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\ **Post date:** [February 10, 2025, 10:42am UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/10 "2025-02-10T10:42:57Z")
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. ---
**Author:** ![bearsmom](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.sunfounder.com/bearsmom/32/1303_2.png) [@bearsmom](https://forum.sunfounder.com/u/bearsmom)\ **Post date:** [February 14, 2025, 8:12pm UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/11 "2025-02-14T20:12:15Z")
Hi, Sorry for the delay in responding to you. I have had a crazy busy week. Please see the videos here: [Microsoft OneDrive](https://1drv.ms/f/s!AoEiPtixa-fJkYJQglY75rnI0l6-9w) Thank you! ---
**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\ **Post date:** [February 17, 2025, 2:44pm UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/12 "2025-02-17T14:44:56Z")
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](https://docs.sunfounder.com/projects/pidog/en/latest/assemble_video.html) [![](https://canada1.discourse-cdn.com/flex029/uploads/sunfounder/original/2X/7/70633332354e8421295cf64ddd676eea470e5bb2.jpeg "Assembly Tutorial 1 for PiDog - SunFounder Smart Robot Kit") ](https://www.youtube.com/watch?v=PTo6smSIlDY) [![](https://canada1.discourse-cdn.com/flex029/uploads/sunfounder/original/2X/7/7b46d3687d94b108c15c77dd8e832aed66bd30f6.jpeg "Assembly Tutorial 2 for PiDog - SunFounder Smart Robot Kit") ](https://www.youtube.com/watch?v=witCWeoHTdk) ---
**Author:** ![bearsmom](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.sunfounder.com/bearsmom/32/1303_2.png) [@bearsmom](https://forum.sunfounder.com/u/bearsmom)\ **Post date:** [February 17, 2025, 3:33pm UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/13 "2025-02-17T15:33:31Z")
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. ---
**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\ **Post date:** [February 18, 2025, 9:26am UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/14 "2025-02-18T09:26:14Z")
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. ---
**Author:** ![bearsmom](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.sunfounder.com/bearsmom/32/1303_2.png) [@bearsmom](https://forum.sunfounder.com/u/bearsmom)\ **Post date:** [February 19, 2025, 3:03pm UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/15 "2025-02-19T15:03:22Z")
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. ---
**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\ **Post date:** [February 20, 2025, 3:31pm UTC](https://forum.sunfounder.com/t/pydog-just-starts-shaking-and-shuts-down-with-every-command/2555/16 "2025-02-20T15:31:27Z")
Please contact our after-sales email: [service@sunfounder.com](mailto:service@sunfounder.com) The after-sales team will resend you new servos to see if it solves your problem.