@Rongzhong Li No I mean they will move to different positions everytime I type "c." Maybe that is normal? Either way, even if I save right after calibration...it doesn't save the position. I upload nibble and it goes through the beep sequence and then the servos go all over the place. Head will spin multiple times, etc.

@Rongzhong Li Thank you, that was the problem. Now I have a calibration problem. "c" will move all the servos to the calibration position. I put the limbs on and save the calibration. Upload Nybble and the calibration is off. I have set it numerous times and it doesn't stay. I noticed in WriteInstinct if I type "c" repeatedly the servos keep moving. Shouldn't they stop because they are already in calibration position? It changes everytime.

@Rongzhong Li Well, I've gotten a little closer. Now I upload WriteInstinct. Press "y" to reset joint calibration. Press "y" to upload instincts and some servos move now. Press "y" to calibrate MCU. Then if I type "c" nothing happens. I tried uploading Nybble and it doesn't do anything with the remote. So I redownloaded OpenCat Master and tried to upload WriteInstinct and I get a "Memoryfree.h no such file or directory" and I remember that I commented those lines out last time to move past the error. Could that have something to do with it?

@Rongzhong Li I'm not home yet to try but I think my problem might be that I'm using regular AA batteries! If the requirement is 7-8 volts, there's no way they are adequate. Just pointing it out in case you get other less brilliant people on here, ha ha.

@Rongzhong Li Sorry, I forgot to mention that I did have "No line ending" set. I read the previous guy's post and saw he had the same problem. Mine must be different. I've had that set from the beginning.

@Rongzhong Li Ok, yes it is working. I can move the cat and see the numbers change on the MPU test. However, when I load WriteInstinct, typing "c" doesn't move the servos. I also notice that it says "Won't overwrite Instincts on external I2C EEPROM." It asks to calibrate MCU. I say yes. It says Gotcha!. Then it doesn't respond to "c." Sometimes I can get the Move command to work on the servos though. Sorry, I'm fairly new to this.

@Rongzhong Li The switch was in the wrong position I believe but it didn't change anything after I set to arduino. The MPU test code fails also. It will just keep scrolling those numbers forever. Not sure what other photos you are looking for. Chris

I'm having a problem with "MPU failed." I've reloaded libraries and cannot seem to get past this part. Chris