Yesterday I tried to stack a motor shield on a servo motor shield already stacked on my Arduino Uno.
But I realized that I have some problem when I try to use both of them. It seems like some energy is lost or the stepper motor connected to my servo motor shield move weirdly slowly.
I already checked online, and I found some explanations about stacking many shields. About making sure the shields don't use the same pins or SS. As a beginner, help would be very helpful. Thank you.
Here are the two shields I use.
Smart Servo Shield for dynamixel https://store.arduino.cc/arduino-motor-shield-rev3
Smart Arduino Digital Servo Shield for Dynamixel AX https://www.dfrobot.com/product-958.html
On these links, you can find all the specs with the pins used. I think I have some pinß shared by both of them... But not sure.
Does anyone have a solution please? Many thanks in advance.