Hi Rongzhong Li, many thanks for your quick reply and support! Bittle is working as expected. I look forward to taking next steps of the next few weeks. Thank you very much!

Quick follow up. I've uploaded and ran a few programs (TestBuzzer, WriteInstinct, ... OpenCat). All worked fine. USB and Bluetooth are connections are working fine. I can send serial commands such as "c", "c0 50" or "m0 -50" and they work fine using USB or Bluetooth. However, when I send "ksit" or another skill, the only command I see in the serial terminal is "k" and all four shoulder joints move a few degrees and then back to initial pos. I've calibrated the IMU and the servos. Any thoughts?

Hello, I may have a similar problem with the serial commands. Today I build Bittle, uploaded and ran a few programs (TestBuzzer, WriteInstinct, ... OpenCat). All worked fine. USB and Bluetooth are connections are working fine. I can send serial commands such as "c", "c0 50" or "m0 -50" and they work fine using USB or Bluetooth. However, when I send "ksit" or another skill, the only command I see in the serial terminal is "k" and all four shoulder joints move a few degrees and then back to initial pos. I've calibrated the IMU and the servos. Any thoughts?