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
FS90MG Micro Servo Motor 180 Degree 2.2 kg.cm Metal Gears