ADXL345 Triple Axis Accelerometer Board

ADXL345 3-Axis Digital Accelerometer
The ADXL345 is built for precision. With a resolution of up to 13 bits, it can detect a tilt change of less than 1°, making it a favorite for image stabilization and high-accuracy robotics.

 
Why it’s a "Pro" Choice:
• Digital Precision: Unlike analog sensors where long wires can pick up electrical noise, the ADXL345 sends exact digital values. This makes it much more reliable for industrial monitoring or long-distance wiring.
• Adjustable Range: You can change the sensitivity in your code. Use ±2g for delicate tilt sensing, or ramp it up to ±16g for high-impact sports tracking or vibration analysis.
• Smart "Interrupt" Features: This sensor has a "brain" of its own. It can be programmed to send a signal to your Arduino only when a specific event happens—like a double-tap, free-fall, or when the device starts moving after being still.
• Ultra-Low Power: In measurement mode, it draws a tiny 23 µA. This is significantly lower than most sensors, making it the "gold standard" for wearables and battery-powered IoT devices.

 
Technical Capabilities:
• Dual Communication: It supports both I2C (easy 2-wire setup) and SPI (high-speed data transfer), giving you flexibility regardless of which microcontroller you are using.
• FIFO Buffer: It has a built-in memory (FIFO) that stores up to 32 sets of data. This allows your microcontroller to "sleep" longer or handle other tasks, only checking in to grab the motion data in batches.
• High Data Rates: It can output data at up to 3200 Hz, allowing you to capture high-frequency vibrations in machinery or structural monitoring.

 
Best For:
The ADXL345 is ideal for health and fitness trackers, vehicle motion tracking, structural monitoring, and gaming devices. If your project needs to know if it has been dropped (free-fall) or needs to react to a physical "click" (tap detection), this is the sensor to use.