Micro Servo Tester — SG90 / MG90S / SG92R, 4.8–6V, PWM Signal Generator, Arduino & RC

Micro Servo Tester — SG90 / MG90S / SG92R, PWM Signal Generator, Manual / Auto / Neutral Modes

This micro servo tester generates standard PWM servo signals (1–2ms pulse, 50Hz) to test and calibrate servo motors without a microcontroller or RC receiver. Compatible with SG90, MG90S, SG92R, and most standard hobby servos, it features three operating modes — Manual, Auto sweep, and Neutral — making it an essential bench tool for Arduino servo development, RC model setup, and robotic arm calibration.

Key Specifications

Parameter	Value
Compatible Servos	SG90, MG90S, SG92R, standard hobby servos
Supply Voltage	4.8V – 6V (servo power)
PWM Output	1–2ms pulse width, 50Hz frequency
Operating Modes	Manual, Auto sweep, Neutral
Operating Temperature	-30°C to +60°C
Connector	Standard 3-pin servo connector (Signal/VCC/GND)

Operating Modes Explained

• Manual mode — turn the knob to set any servo position from 0° to 180° manually
• Auto sweep mode — servo automatically sweeps full range continuously for range and speed testing
• Neutral mode — outputs fixed 1.5ms pulse to center the servo at 90° (neutral position)

Why Choose This Servo Tester?

• ✅ No microcontroller needed — test servos directly from a battery or BEC
• ✅ 3 test modes — manual, auto sweep, and neutral for comprehensive testing
• ✅ Standard 3-pin connector — plug-and-play with SG90, MG90S, SG92R and most hobby servos
• ✅ 4.8–6V supply — powered directly from RC battery pack or BEC
• ✅ Compact and portable — fits in a toolbox for field use

Typical Applications

• Servo motor function and range testing
• RC model servo calibration before installation
• Arduino servo project development and debugging
• Servo center point (neutral) calibration
• Robotic arm servo position verification
• Servo speed and torque comparison testing

Package Contents

• 1 × Micro Servo Tester (PWM Signal Generator)

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