Mini Servo Tester DC 3-26V ESC Tester PWM Speed Controller Servo Tester Module

About this deal

A compact, low-cost module aimed at RC hobbyists, electronics enthusiasts and DIY makers, this servo tester lets you quickly check and adjust servo motors and electronic speed controllers (ESCs) without needing a full radio control setup. It can detect and set the neutral position of a servo, and uses a microcontroller internally for accurate, stable PWM signal generation. Connecting an ESC -- brushed or brushless -- allows you to manually adjust motor speed without a remote control receiver, making it a practical bench tool for testing ESC and motor performance. It provides a straightforward way to verify whether a servo works, or to exercise a servo built into a project such as a robotic arm, with no programming required. The wide DC 3V to 26V input range means it is compatible with a variety of battery packs and bench supplies commonly used in RC aircraft, boats and cars. Note that it is not suitable for driving DC motors directly via PWM, as it cannot supply the necessary current.