Driving the four servos of a MeArm mini robotic arm from an STM32F4 Discovery over PWM.
MeArm Robotics Project
MeArm controlled by STM32F4 diacovery
HW connection & Timing
Module STM32F4
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GND GND
5v 5v
PWM1 PD12
PWM2 PD13
PWM3 PD14
PWM4 PD15
Reference