@Rongzhong Li thanks Rongzhong!

Are the PS1 servos programmable with some kind of one-wire protocol over the data input wire? If yes, is there some documentation? Also, the spec says 270 deg angle range. When unpowered, it is possible to rotate the servo shaft endlessly so this means there are no physical stops in the gearbox. Does the 270deg range stem from the coverage limitations of the internal potentiometer or is it something programmable? Is the internal pot an "endless" type with 360deg coverage or does it have a dead zone? What is the resistance range of the internal pot?

No worries! for now, bittle is my only arduino IDE project. If ever I need to add other libraries, I'll add them one by one and check after each one if bittle is still happy ;-).

Hi Ronghong I set out to create a new user as you suggested but it got too hairy so I just decided to rm -rf ~/snap/arduino and follow the instructions in the bittle documentation as I had done before. The contents of the ~/snap/arduino/current/Arduino/libraries after deleting and adding the MPU6050 and I2Cdev libs are: Now it works and I successfully got bittle working. Thanks!

Hi Rongzhong I started creating a new user as you suggested but it got a little too hairy so I decided to simply rm -rf the contents of the ~/snap/arduino/current/Arduino/libraries and start over. I then followed the instructions in the bittle documentation as I had done before. The contents of the snap directory now look like: I am now able to upload OpenCat.ino and proceed with calibration. Thanks for all your help. Can't wait to see it walk!

Ok. I will do that as soon as i can. Thanks!

Sorry Rongzhong I mislabeled the screenshots. I interchanged the snap libs with the arduino libs.

Here the screenshots of the libraries: arduino-1.8.16/libraries snap/arduino/current/Arduino/libraries OpenCat directory

Hi Rongzhong, This is first time I installed MPU6050 and I2Cdev libraries. I git cloned https://github.com/jrowberg/i2cdevlib.git then used Arduino IDE library manager to Add .ZIP Library to find Arduino/MPU6050/ and Arduino/I2Cdev/. If there were other (possibly conflicting) copies of the libraries, wouldn't that show up in the build logs?