This FS90MG Mini 180 Servo is a great value multi-purpose micro size servo and it's ideal for use with micro-controller systems like the BBC microbit, Arduino, Raspberry Pi and PICAXE
These servos use a standard PWM signal to control them
The Arduino does a great job of controlling PWM Servos, making it ideal for a variety of robotic projects
But sometimes powering these servos can be problematic. Powering servos from the Arduino's 5v regulator leads to underpowered servos, limited by both voltage and current