Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Chip Model	ADXL345
Operating Voltage	3.3V - 5V
Communication Interface	I2C / SPI
Measurement Range	±2g, ±4g, ±8g, ±16g
Resolution	13-bit
Output Data Rate	0.1 Hz to 3200 Hz
Power Consumption	40 µA in standby mode
PCB Dimensions	22mm x 17mm x 3mm
Mounting Holes	4 x 3mm diameter
Weight	2.5 grams

6 reviews

Anonymous

Mar 27, 2026

Rating: 5/5

Perfect for Arduino projects

This sensor module works flawlessly with my Arduino Uno. The I2C connection was easy to set up, and the library support is excellent. Great value for the price.

Anonymous

Mar 20, 2026

Rating: 4/5

Solid build quality

The PCB looks well-made with clear labeling for pins. Only giving 4 stars because the included header pins were slightly bent upon arrival, but easily straightened.

Anonymous

Mar 19, 2026

Rating: 5/5

Compact and reliable

Small form factor makes it easy to integrate into tight spaces. I used it for a self-balancing robot prototype, and it performed consistently over several hours of testing.

Anonymous

Mar 19, 2026

Rating: 5/5

Exceeded expectations

Very responsive to movement changes. The ability to switch between different g-ranges via software is a huge plus for versatile applications.

Anonymous

Mar 17, 2026

Rating: 4/5

Good accuracy, slight noise

The tilt angle readings are quite accurate after calibration. I noticed a little bit of noise in the raw data, but a simple moving average filter fixed it right up.

Anonymous

Mar 05, 2026

Rating: 5/5

Great for learning embedded systems

Bought this for my university project on motion sensing. The documentation online is plentiful, and the SPI mode offers faster data retrieval when needed.

5 FAQ

Q: Does this module come with header pins soldered?

A: No, the module is shipped without header pins soldered to allow for flexible mounting options. You will need to solder them yourself if required.

Q: Does it support interrupt outputs for freefall detection?

A: Yes, the ADXL345 chip supports programmable interrupts for events like freefall, activity, and inactivity. These are accessible via the INT1 and INT2 pins on the module.

Q: Is there a built-in regulator on the board?

A: Yes, the GY-291 module includes an onboard voltage regulator, allowing you to safely power it with anywhere from 3.3V to 5V.

Q: What is the default I2C address?

A: The default I2C address for the ADXL345 on this module is usually 0x53. However, some variations allow changing this via the CS pin configuration.

Q: Can I use this directly with a 5V Raspberry Pi GPIO?

A: While the module supports 5V input voltage, the logic level for I2C/SPI is typically 3.3V. We recommend using a logic level converter when connecting to a 5V system to ensure safe communication.

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