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The UM7-LT orientation sensor from Redshift Labs is an Attitude and Heading Reference System (AHRS) that contains a three-axis accelerometer, rate gyro, and magnetometer. It combines this data using an Extended Kalman Filter to produce attitude and heading estimates. This LT version of the UM7 does not have an enclosure.
Redshift Labs is now manufacturing and supporting the UM7-LT and UM7 orientation sensors (which were originally developed by CH Robotics). Some components have been updated on these versions of the sensors, and the UM7-LT now ships with a conformal coating, but the sensors should otherwise be functionally identical to the previous versions.
The UM7 orientation sensor is a third-generation Attitude and Heading Reference System (AHRS) from Redshift Labs that produces attitude and heading estimates from triaxial accelerometer, rate gyro, and magnetometer data. Unlike a typical inertial measurement unit (IMU), which only provides raw sensor readings, the UM7 features an onboard microcontroller that combines sensor data using a sophisticated Extended Kalman Filter (EKF) to generate orientation estimates 500 times a second.
Two versions of the UM7 are available: the UM7 orientation sensor, which includes an enclosure, and the UM7-LT, which does not. The two versions are functionally equivalent, and both include a cable.
Connections for power and TTL serial communication can be made to the UM7 through a polarized five-pin male connector on one side, which mates with an included cable assembly. A pair of six-pin expansion headers on the other side of the board provide additional connectivity options, including an alternative SPI interface and a secondary serial interface that can be connected to an external GPS module (like ourLS20031 GPS receiver). Additional cable assemblies for the expansion headers are not included.The UM7 features a number of improvements over its predecessor, the UM6, including higher gyro bias stability and lower noise, a new communication architecture for improved flexibility, optional NMEA packet transmission, UTC time-synchronization with external GPS, and support for third-order temperature compensation on all sensors. It takes advantage of newer MEMS (micro-electro-mechanical systems) technology that allows it to offer better performance at a lower price.
You can use a general-purpose USB-to-TTL-serial adapter, such as our CP2104 carrier, to connect the UM7 to your computer. You can then use the Redshift Serial Interface (available in the “Resources” tab) to configure the sensor, and view and log data in real-time.
Product #2763 is the LT version of the UM7, which is just the UM7 electronics without the enclosure.
We carry several inertial measurement and orientation sensors. The table below compares their capabilities:
Product Name | Sensors | Estimation | Other | ||||||
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Gyros (3x) | Accels (3x) | Mag (3x) | Altitude | Roll | Pitch | Yaw | Quaternion | Enclosure | |
Pololu MinIMU-9 v5 | ![]() |
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Pololu AltIMU-10 v5 | ![]() |
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Redshift Labs UM7-LT Orientation Sensor | ![]() |
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Redshift Labs UM7 Orientation Sensor | ![]() |
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Size: | 1.06″ × 1.02″ × 0.26″ |
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Weight: | 3.5 g1 |
Interface: | TTL serial, SPI |
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Minimum operating voltage: | 4 V |
Maximum operating voltage: | 5.5 V |
Maximum logic voltage: | 3.3 V2 |
Axes: | pitch (x), roll (y), and yaw (z) |
Measurement range: | ±2000°/s (gyro) ±8 g (accelerometer) ±12 gauss (magnetometer) |
Supply current: | 50 mA |
Case/enclosure: | N |
Data sheet
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
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