OGRC RC Digital Servo Tester/ESC Consistency Tester for RC Helicopter Airplane Car(Servo Tester,ESC Consistency Tester,RC Helicopter Tester Tool)

I tested this on an oscilloscope because I wanted to see how close it was to a real system. I was pretty impressed with how accurate this tool is. The PWM signals were about as accurate as you could hope for without a better trim pot (adjustment knob). So I would have to give this little unit big thumbs-up. It's small and cheap enough to keep in your tool box. Never had the need for one before, but this is well worth it.

Worked great to center and test sg90 servos for a droid build

Great tool for checking new or installed servos. Like the cycle mode function

This has been the BEST style of these testers I’ve had to so far. ((Yes your eyes aren’t deceiving you, I have stuck a RC Brushless motor (Surpass Hobby Rocket 4268) into a Makita Blower (XBU05) and a 130A FlyColor ESC with the FlyColor WiFi chip)) Don’t waist you time and money with those blue wrapped ones with the board exposed trying to save a buck. Those other ones have let their smoke out on first test well within their voltage specs. Some of the others have quit simply by adjusting the pot, others have shorted out my equipment.I’ll update my review should anything change , but so far this is the best I’ve ever used ( for reference my usage of this device will be multiple times a day 5-7 days a week for the foreseeable future)

The instruction for this device are very vague and unclear. No instruction sheet inside of package, only written on the package. It's supposed to check esc's also, but I have no idea how.

I've been using this to test ESC's and brushless motors. Works well, no issues, exactly what I needed. Haven't used it on servos yet, but since it works well on ESC's, it should work just as well with servos.

Works very well and - good quality at a good price. No servo jittering. There are several for sale different branded. This one (OGRC) is the best tester so far. Others make your servo jitter - at least that's my experience.

The media could not be loaded. This is a nifty little tool for testing your servos. It's small and compact so very easy to transport. My only issue is the total lack of instructions so I already fried mine. I plugged in a small 5V lipo and a 35kg servo to test but I smelled burning electronics and smoke coming from the device. I'm fairly certain I smoked it, literally, because nothing I do with it works now. It's a good tool for your rc bag but this was just a little touchy and melted on the 1st try.

This is a convenient little unit, but it's limited to only 800-2200 μs pulse width, so it only uses about 120°of SG90 servos (which have a range of 500-2500 μs).The "sweep" setting is supposed to be variable speed but its speed is constant, regardless of the dial setting.It doesn't come with any useful instructions (the packaging has very limited info) so I had to look up how to use it on YouTube, and the labeling on the device is unclear. The "S+I" label is actually "Signal, Positive, Negative" and refers to order of the first column of 3 pins (Signal at top). The remaining 4 columns of pins are for servo motors, with the same pin order (Signal, Positive, Negative) as the input pins.Using an external PWM signal overrides all functions of the device (external PWM cannot be toggled from the device), effectively turning 1 servo connection into a 1-channel, 4-port connection.The device will sometimes (erratically) switch between signaling frequencies (50/125/250 Hz) when switching between modes, causing motors to buzz & jitter until the frequency setting is switched back to 50Hz.FYI: the device does NOT show the pulse width of an external signal.