Keszoox
Mini Servo Tester — SG90, MG90S, SG92R, 4.8–6V, 3-Mode, No Arduino Needed
Mini Servo Tester SG90, MG90S, SG92R, 4.8–6V, 3-Mode, No Arduino Needed
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Mini Servo Tester — SG90, MG90S, SG92R, 4.8–6V, 3-Mode Standalone
This mini servo tester lets you test and center servos without an Arduino, RC receiver, or any programming. Simply connect a servo, apply 4.8–6V power, and use the knob and mode button to control the servo position. Three operating modes cover all common servo testing needs — from manual position control to automatic sweep and neutral centering. Essential for servo setup, troubleshooting, and robot arm calibration.
Key Specifications
| Parameter | Value |
|---|---|
| Compatible Servos | SG90, MG90S, SG92R, and most standard 3-wire servos |
| Supply Voltage | 4.8V – 6V DC |
| Operating Modes | 3 (Manual / Auto Sweep / Neutral) |
| PWM Output | Standard servo PWM (1–2ms pulse, 50Hz) |
| Servo Channels | 1 (3-pin connector) |
| Operating Temperature | -30°C to +60°C |
| Origin | Mainland China |
3 Operating Modes
| Mode | Function | Use Case |
|---|---|---|
| Manual | Knob controls servo position | Set specific angle, test range of motion |
| Auto Sweep | Servo sweeps full range automatically | Check servo travel, identify binding or stalling |
| Neutral | Servo moves to center (90°) | Center servo before installing horn or linkage |
Why Choose This Servo Tester?
- No Arduino or programming needed — standalone operation with power and servo only
- 3 test modes — covers manual positioning, sweep testing, and neutral centering
- Compatible with all standard servos — SG90, MG90S, SG92R, and any 3-wire PWM servo
- 4.8–6V supply — power directly from 4×AA batteries or a 5V USB power bank
- Compact size — fits in a toolbox for field use at RC events and workshops
Typical Applications
- Servo setup & centering — center servo before installing control horn and linkage
- Robot arm calibration — set each joint servo to known position before assembly
- RC vehicle & aircraft testing — verify servo travel and direction without transmitter
- Servo troubleshooting — identify faulty servos by testing independently
- Classroom & workshop demos — demonstrate servo operation without microcontroller setup
Compatible With
Works with all standard 3-wire PWM servos including SG90, SG92R, MG90S, MG996R, DS3218, and most hobby-grade servos. Also compatible with digital servos that accept standard 50Hz PWM signals. Not compatible with continuous rotation servos in manual mode (they will spin rather than position).
FAQ
Q: Can I power this tester from a USB power bank?
A: Yes. A 5V USB power bank works perfectly. Use a USB to bare wire cable or a USB breakout board to connect 5V and GND to the tester.
Q: Does it work with MG996R high-torque servos?
A: Yes, as long as your power supply can deliver sufficient current. MG996R draws up to 2.5A under load — use a dedicated 6V power supply rather than a small battery pack.
Q: How do I switch between modes?
A: Press the mode button to cycle through Manual → Auto Sweep → Neutral modes. The LED indicator changes to show the current mode.
Package Contents
- 1× Mini Servo Tester
