I require your help regarding a problem I’m encountering.
Description:
I ordered my Arduino Braccio arm but not all the Servo Motors (M1 - M6) came labeled. I was able to deduce all of them except M1 and M2, the motors for the Base and Base Rotator. I’m having problems inicializing the Test Braccio 90 script, which is meant to put the Braccio upright. While most of everything looks right, the bottom two motors aren’t working properly. I’ve switched them back and forth over 6 times, but can’t get it working.
Does anyone have any experience with the Arduino Braccio? Any and all help would be greatly appreciated!
Thanks so much!
Hello @fitzpatrickmn and welcome to the RobotShop community,
M1 is the motor for the base and M2 the motor for the shoulder, these should be two of the bigger motors, while the M5 and M6 are the rotatory wrist and gripper motors and these should be the two smaller motors.
What I find strange is that you say that the motors of the base behave differently while running the sketch of testbraccio90 however in this sketch both are sent to the position of 90 degrees. Perhaps what you’re seeing that is not working properly are the safety positions in the setup (M1 to 90 and M2 to 45). Checking the approximate position of each motor in degrees can help deduce which motor it is and where it should go. You could try changing the position values in the loop of the sketch to help deducing which is which.
After days of trouble shooting this is what I’ve noticed:
I first thought the problem was the motor itself, but I’ve checked the torque, the degrees all motors are able to move, and made sure the arm is built exactly as detailed in the manual. No matter which motor takes place of the ‘Shoulder M2’ motor, the arm won’t stand upright after the TestBraccio90 code is executed. Because the M1 to M4 motors are all the same, this leads me to believe the servos are simply misaligned. However, when I take the servos out and ‘realign’ them nothing changes. Do you have any experience realigning the servos? I took this to mean taking out the screw and making sure the orange plastic part was facing up, as they originally were, but perhaps I’m missing something.
Thank you again for your reply! I really appreciate your time and patience
