I have a couple projects using an two UNO R3's. The first project has two 17HS4401 Steppers with A4988 drivers, and two MG995 servos with Pololu D36V28F6 6V 2.7A Step-down converters. My power supplies are two PC-650W PC Power supplies with an ATX adapter on it (one for each project). Everything works perfectly on the one above.
- The power is hooked up to 12V, not 5V as shown in my design. Oops.
- Yes, I am using breadboards, I don't have the means to solder everything until design is final. (My first project is also on a breadboard and works flawlessly.)
The code definitely is not the issue, because it's the same exact code, just modified for the additional servos.
My other UNO R3 project uses six MG996R servos with a 2.5A stall supplied by the the other 650W p/s.
For some reason, every single servo jitters like crazy. I have absolutely NO idea why.
Can anyone possibly lead me to clues as to why? I checked YouTube, tons of Googling, and everything else I could think of, and all I find is people having jittery issues.
I tried lots of values of electrolytic decoupling capacitors, nothing worked.
I have attached a wiring diagram of the latter project. Wiring was checked and rechecked ad nauseum.
One thing I just did was use a longer breadboard and separated the step-downs as much as I could.
It still was jittery. Just in case you're wondering, I did NOT spill any caffeinated coffee on it.
Thanks in advance for any help.