Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | GY-291 |
| Chip Type | ADXL345 |
| Measurement Axes | 3-Axis (X, Y, Z) |
| Communication Interface | I2C and SPI |
| Operating Voltage | 3.3V - 5V |
| Measurement Range | ±2g to ±16g selectable |
| Resolution | 13-bit |
| Power Consumption | 40uA in measurement mode |
| PCB Dimensions | 22mm x 17mm x 3mm |
| Application | Tilt sensing, vibration monitoring, motion detection |
Anonymous
Mar 31, 2026
Rating: 5/5
Excellent I2C implementation
The I2C address is standard and easy to configure. Data sheets are accurate, and the power consumption is low enough for battery-powered applications. Very satisfied.
Anonymous
Mar 26, 2026
Rating: 4/5
Solid performance
We bought ten of these for our workshop. Most worked out of the box. One had a slightly noisy Z-axis, but overall, they are great for general-purpose sensing tasks.
Anonymous
Mar 14, 2026
Rating: 4/5
Good accuracy, easy to wire
I used this for a self-balancing robot prototype. The data is stable and the response time is quick. Only giving 4 stars because the pin headers were not included, but soldering them was easy.
Anonymous
Mar 11, 2026
Rating: 5/5
Compact and reliable
Small form factor fits perfectly into my custom drone controller. It handles vibrations well and provides consistent tilt angle data. Will buy again.
Anonymous
Mar 07, 2026
Rating: 5/5
Great for learning embedded systems
Bought this for my university project on motion tracking. The documentation online is plentiful, and the sensor itself is very reliable. Highly recommend for students.
Anonymous
Mar 02, 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 acceleration data was straightforward. Great value for the price.
Q: What is the default I2C address for this sensor?
A: The default I2C address for the ADXL345 chip on this module is 0x53. This can be changed to 0x1D by modifying the solder jumper on the back of the PCB.
Q: Does this module work with 5V logic levels directly?
A: Yes, the GY-291 module includes a voltage regulator and level shifters, making it safe to use with both 3.3V and 5V microcontrollers like Arduino.
Q: Does this come with header pins soldered?
A: No, the module typically ships without header pins soldered to allow flexibility for breadboard use or direct wire soldering. You will need to solder them yourself.
Q: Is a library available for Raspberry Pi?
A: Yes, there are several Python libraries available for Raspberry Pi, such as 'adafruit-circuitpython-adxl34x' or generic SMBus scripts found in community repositories.
Q: Can this measure static gravity for tilt angles?
A: Absolutely. The ADXL345 is designed to measure static acceleration due to gravity, which allows you to calculate tilt angles accurately when the device is stationary.
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