Design with Triple Axis Accelerometer (ADXL335) in Cirkit DesignerThe ADXL335 is a small, thin, low-power triple-axis accelerometer with signal-conditioned voltage outputs. It measures acceleration with a minimum full-scale range of ±3 g. It can measure the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion, shock, or vibration. Common applications include gaming devices, mobile devices, sports and health devices, and system orientation detection.
This circuit interfaces an Arduino UNO with an ADXXL335 accelerometer. The Arduino reads the X, Y, and Z-axis analog outputs from the accelerometer through its analog input pins (A0, A1, and A2) to monitor motion or orientation.
Open Project in Cirkit Designer
This circuit features an Arduino Nano interfaced with an ADXL345 accelerometer for measuring acceleration. The Arduino provides power and I2C communication to the accelerometer, enabling it to capture and process motion-related data.
Open Project in Cirkit Designer
This circuit connects an AITrip ADXL335 GY-61 accelerometer to an oscilloscope for signal visualization and a 3xAA battery pack for power. The accelerometer's Z-axis output is directly monitored on the oscilloscope, allowing for real-time observation of acceleration changes along that axis. The circuit is likely used for educational or testing purposes to demonstrate how the accelerometer responds to motion.
Open Project in Cirkit Designer
This circuit connects an Arduino UNO microcontroller with an Adafruit ADXL345 accelerometer sensor. The Arduino powers the sensor, communicates with it via I2C (using pins A4 and A5 for SDA and SCL respectively), and runs a program to read and output the acceleration data in three axes. The purpose of the circuit is to measure acceleration and provide real-time data for analysis or further processing.
Open Project in Cirkit Designer| Pin Number | Name | Description |
|---|---|---|
| 1 | VCC | Power supply (1.8V to 3.6V) |
| 2 | X-OUT | Analog voltage output for X-axis |
| 3 | Y-OUT | Analog voltage output for Y-axis |
| 4 | Z-OUT | Analog voltage output for Z-axis |
| 5 | GND | Ground reference for the power supply |
| 6 | ST | Self-test pin (leave unconnected if not used) |
To use the ADXL335 with a microcontroller like the Arduino UNO, follow these steps:
Before using the accelerometer, it is important to calibrate it to ensure accurate readings. This involves reading the outputs at a known orientation (e.g., lying flat) and adjusting the readings to account for zero-g bias and sensitivity.
// Define the analog pins connected to the accelerometer
const int xPin = A0;
const int yPin = A1;
const int zPin = A2;
void setup() {
// Initialize the serial communication
Serial.begin(9600);
}
void loop() {
// Read the analog values from the accelerometer
int xVal = analogRead(xPin);
int yVal = analogRead(yPin);
int zVal = analogRead(zPin);
// Convert the analog values to 'g' values
float xG = ((float)xVal - 341.5) / 68.5; // 341.5 and 68.5 are calibration values
float yG = ((float)yVal - 341.5) / 68.5; // Replace with your calibrated values
float zG = ((float)zVal - 341.5) / 68.5;
// Print the results
Serial.print("X: ");
Serial.print(xG);
Serial.print("g, Y: ");
Serial.print(yG);
Serial.print("g, Z: ");
Serial.print(zG);
Serial.println("g");
// Delay before the next reading
delay(100);
}
Q: Can the ADXL335 measure rotation? A: No, the ADXL335 measures linear acceleration. For rotation, you would need a gyroscope.
Q: What is the purpose of the self-test pin? A: The self-test pin is used to verify the functionality of the accelerometer. When activated, it applies a known force to the sensor for testing purposes.
Q: How do I convert the analog readings to 'g' values? A: The analog readings can be converted to 'g' values by first subtracting the zero-g bias level and then dividing by the sensitivity. Calibration is necessary to determine the exact values for these calculations.
Q: Can I use the ADXL335 with a 5V microcontroller? A: Yes, but ensure that the VCC is connected to a 3.3V supply, and use voltage dividers or level shifters for the analog outputs if the microcontroller's analog inputs are not 3.3V tolerant.