3-Axis Accelerometer
The Digilent PmodACL is a 3-axis digital accelerometer module powered by the Analog Devices ADXL345.
Functional Description
The PmodACL utilizes Analog Devices ADXL345 to provide high-resolution acceleration changes including inclination changes of less than 1.0°. With free fall and single/double-tap detection capabilities, the PmodACL can be configured to take measurements on the user's whim.
Interfacing with the Pmod
The PmodACL communicates with the host board via the SPI protocol or the I²C protocol. SPI communication is enabled when the Chip Select line is driven low; conversely, the I²C protocol is enabled when the Chip Select line is driven to a logic level high voltage. An interrupt can be triggered whenever a measured axis acceleration data is over a user-defined threshold limit.
Physical Dimensions
The pins on the pin header are spaced 100 mil apart. The PCB is 1 inch long on the sides parallel to the pins on the pin header and 0.8 inches long on the sides perpendicular to the pin header.