I am a complete newbie with this… helping out neighbor children with an assembled piCrawler.
When viewing the diagram of the assembled robot before the power off, it appears that the leg servos should be at 45-90-90 degrees. However, they are at different angles from each other. Suspecting that I need to completely detach all servos in sequence, zero each and reinstall with the legs in the proper positions.
Is there a shortcut of just detaching the servo arms and zeroing all servos at the same time then reattaching?
Is there any difference between using either the Zero button or the USR+RST buttons to re-zero the servos?
Also, the plate connecting the leg to the body appears to be reversed.
Duh, I probably need to completely remove the servo to release the arm.
Thank you!
Mike
Please follow this precise procedure for servo zeroing and assembly:
Power on your Robot HAT, then press the ‘ZERO’ button twice to enter the servo zeroing program.
Take one servo and connect its cable to port P11. The servo will automatically move to its zero position.
Important: Do not disconnect the cable yet. While the servo is at zero, install and securely fasten it into the spider leg according to the assembly diagram. Pay close attention to the required joint angles: 45°, 90°, and 90°.
Only after the servo is fully screwed in place, disconnect its cable from P11.
Repeat steps 2 to 4 for the second servo, then the third, and so on until all 12 servos have been individually zeroed and installed.
Key Reminder: For each servo, you must fix it in place with screws before disconnecting it. This ensures every servo is physically mounted at the exact same position as its electronic zero point, which is critical for proper function and to prevent damage.
