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Compact servo tester with adjustment knob and dual ports

yahboom

yahboom RC Servo Tester 1 channel

SKU CH-EHA7-T61X4

Single-channel servo tester with dual outputs, adjustable knob and over-current protection for 5–8.4 V PWM servos

  • Adjust servo angle manually without writing code
  • Dual servo interface for testing two motors
  • On-board knob gives direct position control
  • Micro USB or KF301-2P power input options
  • Over-current protection guards connected servos

RC Servo Tester 1 Channel

The Yahboom servo tester is a compact centering and debugging tool for hobby-grade PWM servos. It provides a single control channel with an on-board adjustable knob and a function switch button to select between two operating modes.

Builders debugging 5 V to 8.4 V PWM servos

This unit suits makers who need quick, code-free angle adjustment for mechanical claws, robotic arms or AI robotics projects. It is not for users who require multi-channel simultaneous control, automated sequence programming or direct PC-based servo configuration.

Single-channel PWM control with dual power inputs

The tester accepts power from either a Micro USB connector or a KF301-2P terminal block, though only one source may be used at a time. Over-current protection is built in to guard the connected servo during bench testing.

How it compares

Measured against everything we stock in Digital Servos & Gyro Controllers, at today’s prices. Recalculated every night.

Price $29.99
Pricier than about 60% of the 21 comparable items (median $27.99).

Specifications

Processor
ProcessorOther

Questions about this item

Will the 1-channel tester drive the 5-8.4 V PWM servos I already own?

Yes, it is designed for 5-8.4 V PWM servos and provides an on-board knob for manual angle adjustment without code.

How do I verify the tester is working once I connect a servo?

Power the board via Micro USB or the KF301-2P terminal, select a control mode with the function switch, then turn the knob — the servo should move smoothly through its range.

What comes in the box and what must I supply separately?

The tester board with dual servo interfaces is included; you must provide either a Micro USB source or a KF301-2P power supply (not both at once) and the servos you wish to test.

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