ADXL327 Demo Schematic
This schematic illustrates a basic configuration of the ADXL327 analog accelerometer, useful for introductory instrumentation of moving systems.
Place the ADXL327 accelerometer break-out board (BOB) at one end of the included breadboard. This small printed circuit board (PCB) allows you to easily connect additional circuits to the otherwise-impossibly-small component.
Place the ADP3300 linear regulator breakout board at least an inch away from the ADXL327, allowing space for the additional connections. This type of the ADP3300 part accepts a wide range of input voltages and provides a low noise 3.3 volt supply for use by the ADXL327.
Place the two required electrolytic capacitors around the ADP3300 breakout board, with a 47uF capacitor across the pins "IN" and "GND" and a 10uF capacitor across "OUT" and "GND." Take careful note of polarisation - if these electrolytic capacitors are inserted backwards, they will not function as intended, and may get hot or explode.
Connect "SDB" (shutdown) to "IN" to ensure the regulator is enabled.
With an ADALM1000 device, connect channel A to "IN" and channel B to "out." Connect "GND" on your M1K to "GND" on the breadboard. Slowly increase the voltage on channel A from 0v to 5v and observe the voltage on channel B. As the input voltage passes 3.3v, the output voltage should remain at approximately 3.3v, indicating you have successfully completed this part of the circuit. You should not measure more than 1mA (0.001) ampres of current flowing through channel A.
Press the "pause" button in Pixelpulse2 and detach your M1K from USB. Disconnect channels A and B from the ADP3300 subcircuit.
Connect "5V" from the M1K (red wire, by channel B) to "IN" and "OUT" on the ADP3300 to both "VS" pins on the ADXL327 breakout board. Connect "GND" on the ADP3300 to all "COM" connections on the ADXL327.
Place the two small 100nF ceramic capacitors, marked "104" across ("YOUT" and "GND") and (
"ZOUT" and "COM") on the ADXL327. Connect "ChA" of the M1K to "YOUT" and "ChB" of the M1K to "ZOUT."
At this point, you should have four connections from the M1K to your breadboard - "ChA", "ChB", "GND", and "5.0V" - ensure that this is the case, and plug your M1K into USB.
Press the "Play" button in Pixelpulse2 to begin streaming data - voltages directly proportional to acceleration will be displayed. Tap or gently shake your breadboard to verify correct functionality.