ADXL335 3-Axis Analog Accelerometer Sensor Module

The module includes an onboard voltage regulator and is designed to operate from a 3V to 5V DC supply. This makes it directly compatible with both 3.3V logic systems (like ESP32 or Raspberry Pi) and 5V systems (like standard Arduino boards) without requiring an external level shifter.

The ADXL335 provides three separate analog output pins (Xout, Yout, Zout). Each pin outputs a voltage proportional to the measured acceleration. Connect these pins to three separate ADC input channels on your microcontroller (e.g., Arduino analog pins A0, A1, A2). The module's VCC and GND connect to your system's power supply.

The built-in RC low-pass filters help condition the analog signal by attenuating high-frequency electrical noise. This is particularly useful in environments with motors, switching power supplies, or other sources of electromagnetic interference, resulting in cleaner and more stable acceleration readings for your application.

Yes, the ADXL335 can be used for free-fall and tap/double-tap detection. These are not hardware-triggered outputs but are functions implemented in software. By continuously reading and processing the analog acceleration data, your microcontroller code can identify the specific signature of a free-fall condition or an impact (tap).