[Bluetooth 5.0 Accelerometer+Inclinometer] WT9011DCL MPU9250 High-Precision 9-axis Gyroscope+Angle(XY 0.2° Accuracy)+Magnetometer with Kalman Filter, Low-Power 3-axis AHRS IMU Sensor for Arduino

The package is supposed to include a QR code that leads you right to the correct software. Mine did not. Nor could I find an app by searching the Google Play store despite what their website says. And there's no download section on their website. Very frustrating. Eventually I found a YouTube video which told me to click on a certain symbol on their website which led me to a list of apps that were in zip format. Apparently with motion has many versions of this accelerometer and none of the apps had my exact product number so I chose the closest one. I had to use two programs to unzip it and get it to run.The label on the device has a different product number than what shows up on the Bluetooth list. Needless to say if I wasn't a power user and very interested in getting this thing to run I would have given up by now. But after about an hour I got the thing loaded onto my Android 13 phone and it looks pretty good, however there's no way to set and fix the range setting on their chart even though there's a button to do that it's not functional. Without this feature it will be hard to compare acceleration plots from the various devices I wish to try.Update April 2024: I tried again to contact this company because I was unable to use the recorder or even set permissions for file access. To my surprise they responded immediately (and how rare is that these days) and fixed the problem. For that I had to bump them up to five stars.

Took off 1-star because App needs further work when it comes to display's chosen language. Too much is still in Mandarin, even when English is selected as language.As accelerometer it works in all 3-axis XYZ and rotation around those 3-axis.Not sure about what one menu selection is trying to show when it comes to moving differentiation.

The sensor works great, USB-C to charge, lasts all day it seems. Connects via bluetooth and its simple. The software that comes with it (via google drive) is good. The company support is great. I had different needs on the scales in the graphing software and they updated the software and sent me a personal link with the update I needed. You can't beat that. The output can be several container types and I can import that sensor data to most other software no problem via CSV or txt, etc, and even Open Office reads it fine in SpreadSheets for custom graphing as needed (images included). Their custom software has great features (see my first image of all the real time data streaming in and graphing). I use this to measure acceleration changes to understand relationships of vibration and coupling as a form of tactile response with audio and transducers.

The product has some proprietary interface procedures that uses BT5 internally but doesn't adhere to it at the host interfaces. It wouldn't pair as a standard BT5. The custom implementation they have is very specific to Windows PC. Won't have much luck with other platforms.

What an amazing little device! I'm using it to measure involuntary leg movements at night (by taping it to my foot). It was a cinch to set up, and has worked perfectly so far. It's so small and light that I don't even notice it. I can imagine all sorts of potential applications in sports, beyond the industrial-type uses it was intended for. Highest recommendation to anyone interested in tracking and recording motion in 3d.

WT9011DCL Inclinometer• The instruction sheet that came in box is not useful. For example, they don’t even tell you how to turn the device on or off. It turns out that you push and hold the little button on the front, but you have to get your fingernail on it just right. There’s no good indication to tell you whether it’s on or off.• I could not find any documentation for the WT9011DCL on their web page. The best thing to do is go to the Amazon product web page and scroll down until you come to “Product guides and documents.” Click the top entry, “Instructions for Use,” which is a PDF file and is a much better resourceI first tried to get this running with my Samsung S23 Android phone. I downloaded the WitMotion app from the Play Store and installed it without issue. The instructions for pairing are clear. There is an extremely dim and easy to miss blue LED that flashes when it’s paired.• According to the instructions, your first step is to calibrate the sensor. Unfortunately, there is no Calibration menu on the Android App. This must be for the PC version?• The manual says the Bluetooth range when using a Samsung phone is: “Best Distance BD” = 56 m and “Max Distance MD” = 108 m. (BD and MD are not defined). To test this, my wife held the sensor in the kitchen while I walked outside away from her while watching the app on my phone. After only about 60 ft (~20 m) the display stopped updating. (This is basically a line-of-sight path with only the kitchen window in the way). When I walked back to the kitchen the display remained frozen. The only way I could get it working again was to disconnect and reconnect Bluetooth. I’ve tried several variations of the test and all with the same result. I’m disappointed that the screen kept locking up and I’m quite disappointed about the limited range.• The engineering on this seems to be quite good. The app lets me monitor “Acc,” which graphs x, y, and z tilt angles. There is “Gyro,” which graphs x, y, and z angular acceleration, e.g., it senses when you turn the sensor in any direction. My favorite is “Angle,” which is like a bubble level showing the N-E-W-S sensor direction along with a graphical bubble showing tilt in x and y directions. Finally, there’s “MagField” showing the x, y, and z magnetic field values. The best thing is that the values are smooth and non-noisy, presumably a result of using Kalman filters.PC application.• The manual gives a link for software download, but it’s a Google drive with a bunch of strangely labeled directories and files. I was not able to successfully follow their directions to download the software.• Fortunately, their video tutorial is somewhat more useful.• My old PC doesn’t have built-in Bluetooth, so I needed to use the provided Bluetooth USB plug. Unfortunately, I haven’t been able to get my PC to recognize it. I tried an old Bluetooth adapter from my junk box, which my computer recognizes as a Bluetooth device, but sadly, the MitMotion software doesn’t see it, and won’t connect to the sensor.• I’m stuck and tired of messing with this. I’ll eventually try to contact customer support for help, but right now my out-of-box experience is not good.Bottom line: The engineering on this sensor seems top notch. If I can ever get it working, I think I’ll like it (except for the disappointing Bluetooth range). The documentation is poor. My advice is to spend some time looking at the documentation before you buy this and make sure you know what you’re getting yourself in for.Edit: On a positive note, I was contacted by their customer support and offered a full refund. I'll still try to get this thing working when I get some time, but in the meantime, I'm impressed that they stand behind their product.

Feels like it might have spyware when you download a sketchy app from a google drive. but I ran it in a VM and it seems to be harmless.

Don’t know if my unit is just hinky but this is the worst WIT IMU I’ve used yet.It will eventually connect but then it appears to update between 1 and 20 times per second