ADXL345 Digital Angle Acceleration Sensor Module
====================================================ADXL345 DIGITAL ACCELERATION & ANGLE SENSOR====================================================MODEL: ADXL345TYPE: 3Axis Digital AccelerometerOUTPUT: Digital (I2C / SPI)SENSOR RANGE: 2g, 4g, 8g, 16g (configurable)INTERFACE: I2C (default) or SPISUPPLY VOLTAGE: 2.03.6V (typical 3.3V)POWER CONSUMPTION: Low powerPACKAGE: Module with header pinsIC MANUFACTURER: Analog Devices---------------------------------------------------- WHAT IT DOES:The ADXL345 measures **acceleration along X, Y, and Z axes**.It can be used to calculate inclination/tilt (angle), vibration,motion detection, orientation, and free'fall detection.---------------------------------------------------- KEY FEATURES: **3Axis sensing:** X, Y, Z acceleration **Digital output:*/ 16g **13bit resolution** for high'precision data **Low'power modes** extend battery life **Interrupts:** motion, tap, double'tap, activity, inactivity **Small footprint:** easy for embedded projects---------------------------------------------------- SENSING PRINCIPLE: Uses MEMS (Micro'Electro'Mechanical System) Acceleration changes capacitance inside MEMS IC converts capacitance changes to digital data Microcontroller reads data over I2C/SPI---------------------------------------------------- ELECTRICAL INTERFACE: **VCC:** 3.3V (2.03.6V range) **GND:** Ground **SDA:** I2C Data **SCL:** I2C Clock **CS/SDO:** Mode select (I2C or SPI) **INT1 / INT2:** Interrupt outputs for eventsress: **0x53 or 0x1D** (depends on ALT address pin) Read registers for acceleration data Configure range & filters via registers---------------------------------------------------- MEASUREMENT DATA:Acceleration data format: 16bit signed values (13bit effective) Convert to g units via scale factor based on rangee.g., For 2g 256 LSB/g (approximate)Example:Raw X = 512 X 512/256 = 2 g---------------------------------------------------- ANGLE / TILT CALCULATION:You can compute tilt/angle from accelerations: Roll = atan2(Y, Z) (180/) Pitch = atan2(X, Z) (180/)Useful for orientation estimation in robots,gesture detection, and balance systems.---------------------------------------------------- INTERRUPT CAPABILITIES:ADXL345 supports: r>Interrupts alert the microcontroller without constant polling.---------------------------------------------------- APPLICATIONS: Tilt/angle measurement (device orientation) Motion detection & wake'on'shake Gesture control (tap/double'tap) Vibration monitoring Vehicle/bicycle motion sensing Gaming controllers & VR interfaces Drones, robots, wearables---------------------------------------------------- INSTALLATION & USAGE TIPS: Use **I2C pull'up resistors** if not on module Provide stable **3.3V supply** Keep wiring short for reliable I