MMA7361 Angle Sensor Inclination Accelerometer Acceleration Module

The MMA7361 is a unique accelerometer in that its outputs are analog signals. Each of the three axes (X, Y, Z) have their own dedicated output pin. Connect these to the analog inputs of your Arduino or another controller to measure the acceleration value.

The MMA7361 is a 3.3V device but this board includes an on-board voltage regulator which allows you to power it from 5V as well as 3.3V.

PRODUCT CONTENTS:

• 1 — MMA7361 3-Axis Accelerometer module

FEATURES:

1. 3-axis micro-capacitive acceleration sensor
2. On-board voltage regulator allows for optional supply voltages up to 7V
3. Two selectable range options: ±1.5g or ±6g. Selectable using the module's GS pin
4. Breadboard compatible pins
5. Sleep mode easily enabled using the module's SL pin (pull low to enable sleep)
6. Built in self-test abilities. To use the self-test, hold module upside down to put a force of -1g on the Z-axis and pull the ST pin high to initiate self test. The self-test feature of the MMA7361 then applies an electrostatic force to each axis to cause it to deflect. The Z-axis is trimmed to deflect +1g, which you can measure on the Z pin. This feature can be used for calibration (refer to datasheet)
7. Signal conditioning with low pass filter
8. 0g-Detect for freefall detection. The 0G pin will go high when 0g is detected on all 3 axes

SPECIFICATIONS:

Supply Voltage Connected to 3V3 pin 2.2V - 3.6V Connected to 5V pin 4V - 7V Current Usage ~400µA, 3µA in sleep Selectable Sensitivity ±1.5g, ±6g Sensitivity 800mV/g @ 1.5g Turn On Time 0.5ms Enable Response Time Dimensions (Excluding Pins) Length 28mm (1.11") Width 17mm (0.67") Height 3.3mm (0.13") WEIGHT 2.5g (0.09oz)

PIN ASSIGNMENTS:

Label Pin Assignment X Analog output for X-axis Y Analog output for Y-axis Z Analog output for Z-axis SL (Sleep) Pull low to put the chip into sleep mode or pull high to wake chip 0G (0g detection) Pin will go high when zero gravity (0g) is detected on all 3 axes; useful for detecting free fall 5V Input voltage (4V - 7V); connected to on-board voltage regulator 3V3 Input voltage (2.2V - 3.6V); connected directly to VDD of MMA7361 GND Ground GS Sensitivity select - selects between two sensitivities; for 1.5g mode leave pin un-connected or pull pin low, for 6g mode pull pin high ST Self-Test Pin - pull high to initiate self test, hold module upside down to put a force of -1g on the Z-axis. The MMA7361 then applies an electrostatic force to each axis to cause it to deflect. The Z-axis is trimmed to deflect +1g, which you can measure on the Z pin. This feature can be used for calibration (refer to datasheet)

RESOURCES:

• MMA7361 Datasheet
• Module Schematic
• Arduino MMA7361 Module Tutorial (Instructable)

1. int x; // x axis variable
2. int y; // y axis variable
3. int z; // z axis variable
4. void setup()
6. {
7. Serial.begin(9600); // opens serial port, sets data rate to 9600 bps
9. }

void loop()

{

x = analogRead(5); // read A5 input pin

y = analogRead(4); // read A4 input pin

z = analogRead(3); // read A3 input pin

Serial.print("X = "); // print x adc value

Serial.println(x);

Serial.print("Y = "); // print y adc value

Serial.println(y);

Serial.print("Z = "); // print z adc value

Serial.println(z);

delay(100);

}

• SKU: 637725044275794186
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• Category: Car Electronics
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• Tags: MMA7361 Angle Sensor Inclination Accelerometer Acceleration Module