Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	GY-291
Chip Type	ADXL345
Communication Interface	I2C / SPI
Operating Voltage	3.3V - 5V
Measurement Range	±2g to ±16g
Resolution	13-bit
Axes	Three-Axis (X, Y, Z)
PCB Dimensions	20mm x 15mm
Weight	2.5 grams
Application	Tilt Sensing, Motion Detection

6 reviews

Anonymous

Mar 30, 2026

Rating: 4/5

Good accuracy, easy wiring

The wiring is simple thanks to the clear pin labels. Accuracy is good for hobbyist robotics. Just make sure to calibrate it before final use.

Anonymous

Mar 25, 2026

Rating: 4/5

Solid performance

Using this in a small drone prototype. It handles vibration reasonably well, though I added some foam damping. The SPI interface is fast.

Anonymous

Mar 22, 2026

Rating: 5/5

Reliable and compact

Very compact size fits perfectly into tight enclosures. The build quality of the PCB looks professional. No issues after weeks of testing.

Anonymous

Mar 18, 2026

Rating: 5/5

Great for learning sensors

Bought this for a university project on inclinometers. It provided stable data and the documentation online helped me get started quickly.

Anonymous

Mar 18, 2026

Rating: 3/5

Works but needed help

The hardware works fine, but I struggled a bit with the I2C address configuration. Once I figured it out, it worked as expected.

Anonymous

Mar 01, 2026

Rating: 5/5

Perfect for Arduino projects

This sensor module works flawlessly with my Arduino Uno. The library support is excellent, and reading the tilt angles was straightforward. Great value for the price.

5 FAQ

Q: Do you provide sample code for ESP32?

A: Yes, we provide example libraries and code snippets for ESP32 on our product wiki page under the 'Downloads' section.

Q: What is the maximum update rate?

A: The ADXL345 chip supports data rates up to 3200 Hz, allowing for high-speed motion detection applications.

Q: Is the voltage regulator included on the board?

A: Yes, the module includes an onboard voltage regulator, allowing you to safely power it with either 3.3V or 5V logic levels.

Q: Can this measure static tilt angles accurately?

A: Absolutely. This sensor is designed specifically for measuring static gravity vectors, making it ideal for inclinometer and tilt-sensing applications.

Q: Does this module work with Raspberry Pi?

A: Yes, the GY-291 module is fully compatible with Raspberry Pi via the I2C interface. You will need to enable I2C in the Raspberry Pi configuration settings.

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