Yesterday i tried to stack some shield (motor shield) on a shield (servo motor shield) already stack on my arduino Uno.

But i realized, that i have some problem when i try to use both of them. Seems like some energy lost or the stepper motor connected to my servo motor shield move weird slowly.

I already check online, and i found some explanations about stack many shields. About be sure thes shields don't use the same pins or SS. As a beginner, help would be very helpful. Thank you

Here is the two shield 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

wiki : https://www.dfrobot.com/wiki/index.php/Digital_Servo_Shield_for_Arduino_SKU:DRI0027

On these links, can found all the spec with the pin use. I think have some pin shared by both of them... But not sure

Some people have a solution please? Many thanks in advance

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

wiki : https://www.dfrobot.com/wiki/index.php/Digital_Servo_Shield_for_Arduino_SKU:DRI0027

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.