Description: These are the very popular ADXL series dual-axis accelerometers from Analog Devices. The ADXL is a solid state MEMS accelerometer with digital PWM or Analog output. The ADXL can measure both static and dynamic acceleration. This means the ADXL is suited well for sensing tilt (used in many Glove / Air Mouse applications) and for sensing brute acceleration (rocketry and general motion sensing applications).
Some ADXL sensors output Analog, some sensors output both Analog and PWM. Please refer to the current datasheet for your selected sensor for more information. PWM can be easier to interface to using very simple microcontrollers. Analog output sensor require a microcontroller that has an analog to digital converter (ADC).