Two pidog issues

Robotic kit for Raspberry Pi
1

Just assembled a pidog for the first time. Two issues so far:

  1. Invariably, while running the example scripts (which they all work btw), its head starts shaking rapidly - almost like the servo is quickly connecting/disconnecting. I can stop the shaking it by just touching the head. But then it starts again after another command.

  2. I get this error while running various commands: ALSA lib pcm.c:8570:(snd_pcm_recover) underrun occurred

Any ideas?

2
  1. head servo shaking?
    Suggest to change the position of the tail servo with the head jittery servo and see if the head jitter problem is solved?
  2. I get this error when running various commands: ALSA lib pcm.c:8570:(snd_pcm_recover)
    Did you run the sound example and did the speakers work properly.
    We suggest you reinstall i2samp.sh:
    cd ~/pidog
    sudo bash . /i2samp.sh
    Go ahead and run the example again, using the sudo run command.