SG 90 servo and Raspberry Pi

BellAmi223613 · 19 April 2026 02:01

Hi everone,

I am looking for some sample code to do the following.

When the raspberry pi boots, I want the servo to go from 0 degrees to 45 anti clockwise and to stop.

I then need another peace of code that can make it spin 90 degrees clockwise and stop.

Any help would be awesome!

Pixmusix · 19 April 2026 07:30

Hi @BellAmi223613

here you go. This is what i use.

github.com/rpi-pal/rpi-pal

examples/pwm_servo.rs

main

// pwm_servo.rs - Rotates a servo using hardware PWM.
//
// Calibrate your servo beforehand, and change the values listed below to fall
// within your servo's safe limits to prevent potential damage. Don't power the
// servo directly from the Pi's GPIO header. Current spikes during power-up and
// stalls could otherwise damage your Pi, or cause your Pi to spontaneously
// reboot, corrupting your microSD card. If you're powering the servo using a
// separate power supply, remember to connect the grounds of the Pi and the
// power supply together.
//
// Interrupting the process by pressing Ctrl-C causes the application to exit
// immediately without disabling the PWM channel. Check out the
// gpio_blinkled_signals.rs example to learn how to properly handle incoming
// signals to prevent an abnormal termination.

use std::error::Error;
use std::thread;
use std::time::Duration;

use rpi_pal::pwm::{Channel, Polarity, Pwm};

This file has been truncated. show original

Would you prefer a different programming language?

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SG 90 servo and Raspberry Pi

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