Yay, I just assembled my Rapiro! Powering it on left me a little confused, since some servos (feet/waist) make buzzing sounds, though there's no evident servo movement. When just powering the naked servos without any parts attached to them, there's no such buzzing sound. Should I reassemble the respective parts with more care or do I just have to live with that sound, since its common for (digital) servo motors?
I did not upload any Arduino sketch yet - could that prevent this buzzing sound?
BTW: I use fully charged "energizer recharge universal" 1400mAh/1.2V.
I am not sure though.
To stop the noise, maybe you need to "upload" a program. You can see how on this page.
Now the sample sketch is moved here.
Around line 20 in the sketch, there is several parameters for angle adjustment.
0, // Waist yaw
0, // R Sholder roll
0, // R Sholder pitch
0, // R Hand grip
0, // L Sholder roll
0, // L Sholder pitch
0, // L Hand grip
0, // R Foot yaw
0, // R Foot pitch
0, // L Foot yaw
0}; // L Foot pitch
You need to change these parameters for your Rapiro to have correct angle.
I have exactly the same problem. Plus a defect large servo that are to be replaced.
Did you manage to solve the buzzing frets/waist sound with fine tuning the feet servos ?
I managed to get it a bit better( less buzzing) by adjusting the feets but I can't seem to completely get rid of the buzzing...
Yes, after fine tuning most of the buzzing disappeared. Depending on prior movement patterns the buzzing reoccurs but vanishes after some seconds.
I think the best workaround will be an extension to the rapiro.ino to disable the servos after the designated position is reached (thus no more motion is required). This prevents any noise and should save some energy.
 digitalWrite(POWER, LOW);