Servos and Raspberry Pi: how to do it?

Question

Raspberry Pi

Hello dear forum users. I am new to Raspberry and Linux as such. The task was to control the servo via GPIO ports. Do not tell me how to do it?

Answer 1

Almost all servos are controlled by a pwm signal, Raspberry has only 1 hardware pwm, when using a software implementation of PWM, you will encounter the fact that a software pulse generator eats up your computing resource. In other words, the generation cycle will compete with other code, which will also affect the stability of the PWM, and PWM instability can be expressed, for example, in jerking servos. For myself, the problem of lack of hardware PWM using 16-Channel 12-bit PWM/Servo Driver - I2C interface... . It is connected via the i2c bus and gives 12 hardware PWM, if 12 PWM, you are not enough before the boards can be connected in series.