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[Bluetooth Accelerometer+Inclinometer] BWT901CL MPU9250 High-Precision 9-Axis Gyroscope+Angle(XY 0.05° Accuracy)+Magnetometer with Kalman Filter, 200Hz High-Stability 3-axis IMU Sensor for Arduino
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Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
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Save 5% on USB-HID Adapter(for PC connection) when you purchase 1 or more Qualifying items offered by Witmotion. Shop items
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Save 5% on WT901BLECL Sensor+Adapter Kit when you purchase 1 or more Qualifying items offered by Witmotion. Shop items
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Save 5% on WT901WIFI iOT IMU Accelerometer when you purchase 1 or more Qualifying items offered by Witmotion. Shop items
Purchase options and add-ons
- 【 High Performance 】Rock-solid data output: 3-axis XYZ (Pitch Roll Yaw) Acceleration+ Gyro+ Angle+ Magnetic field, measurement range and output rate ( 0.2-200Hz) selectable
- 【 Robust Design 】4-hour battery life, long term measurement while recharging,10-meter Bluetooth measurement range (no obstacles like walls), Support multi-connection via WITMOTION PC software simultaneously (USB-HID adapter required)
- 【 WITMOTION Advantage 】8-year Professional Attitude Measuring Solution Provider, sensors integrated R&D dynamic fusion algorithm and Kalman Filtering ensuring stable data output and excellent bias stability, low noise level
- 【 Worry-free Support 】12-month warranty, lifetime friendly customer service by WitMotion team. Option 1. The tutorial link is printed on the guiding card inside the package. Option 2. search wit-motion(dot)com and download the complete tutorial. Option 3. contact us if you need any help, support (at) wit-motion (dot) com
- 【 What you get 】1 x WitMotion BWT901CL Bluetooth 2.0 inclinometer + 1 x charging cable + 1 x welcome guide. (USB-HID adapter not included)
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Product details
- Is Discontinued By Manufacturer : No
- Package Dimensions : 3.74 x 3.43 x 1.14 inches; 1.76 ounces
- Item model number : BWT901CL
- Date First Available : November 27, 2015
- Manufacturer : WitMotion Shenzhen Co.,Ltd
- ASIN : B01N99BUMR
- Country of Origin : Dominican Republic
- Best Sellers Rank: #108,119 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
- #33 in Acceleration Sensors
- Customer Reviews:
From the brand
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Established in 2015, WitMotion aims to become a global leader in attitude sensors, AHRS IMU.
The company is dedicated to make attitude measurement and tilt angle sensing solutions more accessible and easier for engineers around the world.
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How to find document for WITMOTION product?
Please visit WIT-MOTION.com and find support page for all kinds of documentation, software, instructions, APP, click the WITMOTION Google Drive to download the tutorial at your wish.
How to find videos for WITMOTION product?
Find WITMOTION on Youtube channel and subscribe. We will consistently upload the interesting videos for lessons or project experience sharing.
What is the future fusion of WITMOTION?
Focusing on becoming a global sensor supplier, we will apply Wit-motion sensors to a wider range of industries.
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Hundreds of fielded projects
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ISO9001-2015 Certification
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WITMOTION IATF16949 Certified
International Standard for Automotive
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Master the Manufacturing Chain
MEMS Tech & Algorithm embedded.
Strict chips selection & Advanced calibration tech.
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Product Description
The Superiority of AHRS IMU High Precision Sensor
A sensor measures 3-axis angle, angular velocity, acceleration, and magnetic field. Its strength lies in the algorithm which can calculate the three-axis angle accurately.
The robust housing and the small outline makes it perfectly suitable for industrial retrofit application such as motion capturing, engineering machine monitoring, etc.
WTMOTION patented zero-bias automatic detection calibration algorithm and R&D dynamic fusion algorithm outperforms traditional accelerometer sensor.
Working current | <50mA |
Working Temperature | -40℃ ~ +85℃ |
Battery life | about 4-6 hours |
Data output frequency | 0.2Hz~200Hz ( default 10HZ) |
Interface | Type-C, Bluetooth 2.0 |
Baud Rate | 115200 (default, can not be changed) |
Battery Voltage | 260mAh capacity, 3.7V |
Output Content | 3-axis Acceleration+Angle+Angular Velocity+Magnetic Field |
Range | Acceleration (±16g), Gyroscope (±2000°/s), Magnet Field (±2Gauss), Angle (X, Z-axis: ±180°, Y ±90°) |
Resolution | Acceleration (0.5mg/LSB; 2048LSB/g), Gyroscope (0.061(°/s)/LSB), Magnet Field (0.0667mG/LSB), Angle (0.0055°/LSB) |
Angle Accuracy | X, Y-axis: 0.2°; Z-axis: 1° (no magnetic interference and after calibration) |
Note | Calibrated required and keep the sensor away from the magnetic sources. (like metal). |
Size | 51mm*36mm*15mm |
WIT Sensor for More Application
WITMOTION Attitude Sensor Series
BWT901CL Accelerometer
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| WT901BLECL Inclinomete
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| WT901C-TTL Digital Sensor
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| Military-grade HWT901B
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| WTGAHRS2 GPS IMU
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| |
Customer Reviews
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3.9 out of 5 stars
117
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3.8 out of 5 stars
18
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4.1 out of 5 stars
20
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3.7 out of 5 stars
13
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Interface
| Bluetooth 2.0, Type-C | BLE 5.0, Type-C | TTL | RS232 | TTL |
Compatibility
| Android/iOS phone, Windows PC | Android/iOS phone, Windows PC | Android phone, Windows PC | Android phone, Windows PC | Android phone, Windows PC |
Input Voltage
| 3.3-5V, in-built battery | 3.3-5V, in-built battery | 3.3-5V | 5-36V | 3.3-5V |
3-Axis Acceleration
| ✔ | ✔ | ✔ | ✔ | ✔ |
3-Axis Angular velocity
| ✔ | ✔ | ✔ | ✔ | ✔ |
3-Axis Angle
| ✔ | ✔ | ✔ | ✔ | ✔ |
3-Axis Magnetic Field
| ✔ | ✔ | ✔ | ✔ | ✔ |
Output Frequency
| 0.2HZ--200HZ | 0.2HZ--200HZ | 0.2HZ--200HZ | 0.2HZ--200HZ | 0.2HZ--200HZ |
Housing
| Plastic case | Plastic case | Plastic case | Aluminum case, IP67 waterproof | Plastic case |
Main Features
| Bluetooth range 10 meters | Bluetooth range 50 meters | 9-axis High Accuracy sensor | Military-Grade Accuracy | High-stability IMU sensor |
Videos
Videos for this product
6:51
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You will know how to connect the IOS app and use
Witmotion
Videos for this product
1:46
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Customer Review: Decent little product that does NOT work
grossman83
Videos for this product
1:38
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BWT901CL Use Instructions with Android Smartphone
Witmotion
Videos for this product
2:53
Click to play video
Use Instructions with PC
Witmotion
Looking for specific info?
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the software and value of the audio recorder. They say it comes with its own data collection software that's useful enough. However, some customers have reported issues with connectivity and sampling rate. They mention that the timing of the sampling is not constant and sometimes it lags. Customers also disagree on performance.
AI-generated from the text of customer reviews
Customers like the software that comes with the audio or video product. They say it's good, useful, and eliminates a ton of cabling.
"...It can be zeroed for how it is placed and then monitored. The software is good...." Read more
"...3. The software is excellent except for the fact that once you start the record, there isn't a STOP button anywhere to be found... it ran all night..." Read more
"...They have software to interface with that's useful enough. The email support is responsive enough (replies in 1 day)...." Read more
Customers appreciate the value of the audio or video product. They say it has good support.
"...I would recommend WitMotion products , great price and awesome customers' support." Read more
"Ignore the One Star Reviews... this thing is awesome for the price. Battery Not Included..." Read more
"Value for the price, good support, software needs a bit more tuning but gets the job done...." Read more
Customers are mixed about the performance of the product. Some mention that it works wonderful and appears to be great for the intended purpose, while others say that it does not work. Some say that the Bluetooth phone app works great, while other say that they have major issues with the product not working as a native sensor when added to Android OS.
"This is a great little tool that works as advertised. The blue tooth phone app works great, so good I haven’t bothered to use the Bluetooth thumb..." Read more
"...] I have a few of these and they do a decent job, but there are major issues with the apps...." Read more
"Works great. I was hoping the sensitivity would be good, and it’s actually better than expected." Read more
"...Overall, it does work just fine and has a battery built in just needs charging...." Read more
Customers find the connectivity of the audio or video product to be hard to connect to.
"It didn't connect, so I wouldn't know if it was good or bad. I couldn't get help to get it to connect either." Read more
"junk, woudnt connect requires gps to work too, get an arduino instead. More work but not crap." Read more
"Difficult to connect to Bluetooth, once connected its really neat." Read more
Customers are dissatisfied with the sampling rate of the product. They mention that the timing of the sampling is not constant, and it lags periodically. The product starts to drop data randomly and produce data at random time only up to 5-10 times per second. The sampling is also not consistent, and will not update at a rate higher than 1 - 2 Hz when kept.
"...However, don't plan on doing an FFT of the data. The sampling rate varies, and the timestamps aren't logged with enough accuracy (or even precision)..." Read more
"...The BT will start drop data randomly and produce data at random time only up to 5~10 times per second, even if you can select data rate as high as..." Read more
"...since the timing of the sampling is not constant and sometimes it lags periodically. And it is not an issue of bluetooth connection...." Read more
Reviews with images
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Top reviews
Top reviews from the United States
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On my Android phone the app never quite gets fully open before crashing.
Other than not being able to get the data anymore here are the positives:
these do in fact record at pretty decent frequency (100 Hz - 200Hz depending on the model... I have a few). However, don't plan on doing an FFT of the data. The sampling rate varies, and the timestamps aren't logged with enough accuracy (or even precision) and as such it injects a lot of noise into an FFT.
1. Make the cable so that you can transmit via USB... it is 2 whole wires. I would gladly pay $2 extra dollars for the extra wires.
2. Make sure that your solder connections between the bluetooth board and the actual gyro board are good... mine needed a bump
3. For pity sake, get someone that actually speaks English to write your manual and include the documentation for the bluetooth and where the led light are located...
That being said...
1. Once I took it apart and got the blue light to come on for the bluetooth, Windows 10 found it flawlessly. Found it even after I removed power and replugged it back in.
2. Adding a $1 AA battery pack to the gyro makes it cable free which is most excellent. The AA pack that holds 3 battery powers the gyro beautifully.
3. The software is excellent except for the fact that once you start the record, there isn't a STOP button anywhere to be found... it ran all night and saved the data... oh my!
To all the people that gave this a 1 star due to the fact that you cannot ship via air with a battery installed, get a battery pack and solder it into place. I managed... took all of 3 seconds.
So the part numbers that you need for research:
BWT901CL - which is what you purchased which includes:
HC-06 - this is the part number for the bluetooth module. If you ask google for the data sheet, it will find it.
JY901 - this is the actual gyro board
The switch on the side does nothing... when the unit is plugged into USB power there should be a red light and a blue light above the switch. If the blue never lights off, the solder on pins 12 and 13 need a touch up... you need a very small (tiny) solder tip on your iron to fix it.
The software is on the wit-motion.com web site. You will need chrome and the google translate to read it and find the downloads... you need the software for the JY901... and not for the actual part number.
I hope that this helps everyone who purchases one of these. Get over the battery problem guys... this girl that has used gyros for aerospace that cost thousands of dollar and are not bluetooth, this one is excellent for the application that we are using it for, gets rid of a ton of cabling and comes with its own data collection software with software source samples.
Have a wonderful day!
Reviewed in the United States on May 9, 2018
1. Make the cable so that you can transmit via USB... it is 2 whole wires. I would gladly pay $2 extra dollars for the extra wires.
2. Make sure that your solder connections between the bluetooth board and the actual gyro board are good... mine needed a bump
3. For pity sake, get someone that actually speaks English to write your manual and include the documentation for the bluetooth and where the led light are located...
That being said...
1. Once I took it apart and got the blue light to come on for the bluetooth, Windows 10 found it flawlessly. Found it even after I removed power and replugged it back in.
2. Adding a $1 AA battery pack to the gyro makes it cable free which is most excellent. The AA pack that holds 3 battery powers the gyro beautifully.
3. The software is excellent except for the fact that once you start the record, there isn't a STOP button anywhere to be found... it ran all night and saved the data... oh my!
To all the people that gave this a 1 star due to the fact that you cannot ship via air with a battery installed, get a battery pack and solder it into place. I managed... took all of 3 seconds.
So the part numbers that you need for research:
BWT901CL - which is what you purchased which includes:
HC-06 - this is the part number for the bluetooth module. If you ask google for the data sheet, it will find it.
JY901 - this is the actual gyro board
The switch on the side does nothing... when the unit is plugged into USB power there should be a red light and a blue light above the switch. If the blue never lights off, the solder on pins 12 and 13 need a touch up... you need a very small (tiny) solder tip on your iron to fix it.
The software is on the wit-motion.com web site. You will need chrome and the google translate to read it and find the downloads... you need the software for the JY901... and not for the actual part number.
I hope that this helps everyone who purchases one of these. Get over the battery problem guys... this girl that has used gyros for aerospace that cost thousands of dollar and are not bluetooth, this one is excellent for the application that we are using it for, gets rid of a ton of cabling and comes with its own data collection software with software source samples.
Have a wonderful day!
Top reviews from other countries
No se que mas pueda decir, supera las expectativas
Description indicates that it is a Bluetooth 2.0 device, then further down in the comparison chart it says it's 5.0 BLE (Which should work with iOS)
This device would not show up on my iPhone, or Mac unless I used special software to find it.
Once found, it could not connect at all.
Do not waste your time with this.