Digital Servo Tester

I like that it can be powered from the balance plug of a lipo battery or you can connect a power supply or connector to the handy screw terminals for power. The digital readout tells you the power supply voltage. The push-button lets you select either 'middle of travel' mode or control by the knob. There is no 'auto' mode, but it is great for testing a servo or setting up travel when installing one. You can control two servos at a time, they are slaved together. This is a simple device, it works well and was very inexpensive. You should probably cover the bottom of the board to prevent accidental shorts from metal on your workbench. I glued a piece of plastic on mine. For the money, this is a great little device.

This works well for testing range of motion for control surfaces of DIY RC planes as well as centering servos before installing pushrods. Several things to note if you're using with the smaller RC micro servos: 1. You should not plug in a LiPo battery to power the tester and servos unless you are positive that the servos can handle higher voltage. Typical micro servos (eg 5g/9g) operate with a maximum of 6V, so if you use a 2S Lipo you are exposing them to 7.4V or more, which may fry these smaller servos. Instead, you can use wire leads to connect the + and - terminals from an ESC to the blue power input block on the tester. I soldered some leads to a normal USB plug and was then able to use a cheap portable USB power bank to power the servo tester at a perfect 5V. 2. The tester outputs from 500 - 2500 μs, whereas the typical operating range for servos is 1000-2000μs. Just be aware that turning the potentiometer knob to the ends of its motion may send a signal that is beyond the operating range of the servos; you do not want to keep a servo locked beyond it's maximum range of motion for long.

Perfect solution to my servo control needs. High quality as advertised.

It's build quality is good, servo accuracy is close to perfect, and the price is great for what you're getting. The Small size is decent. The only thing that I dislike is that it fried a week after the return window closed. I wasn't using much power, only a 5v USB.

Compact and works. Can hook up two servos. Nowhere does it say on the instructions which are accessed via qr code if the white plug can be used to power it. I took a chance and plugged the balance connector of one of my 2s lipos into it and it worked fine. The blue connection is where they say to power it up. I kinda wish this was in an enclosure of some sort. Just an open printed circuit board.

This is only tester that managed to drive my servo to apsolute ends. with other servo tester my servo was only deflecting 60 degree in both direction. But with this one it drives 90degree in both direction from middle or all together 180degre. I have buy cople testers and and finally found one that actually dooing what i need it to do. Perfect. Thank you very much.

It does ok, but my cheaper older servo tester has 3 functions, with the 3rd being it continuously sweeps the arm back and forth, but this new tester doesn’t.

Excellent quality.

とても良い、期待通りでした♪

Yuggi

Produit conforme au descriptif, facile à mettre en oeuvre, fonctionnement impeccable

Ok

Sehr gut ist die direkte Anbindung eines mit Sicherheit bereits vorhandenen LiPo - Akkus mit zwei Zellen. Da die LED - Anzeige die aktuelle Spannungslage dokumentiert ist ein sicherer Betrieb möglich.