The L3GD20 is a low-power three-axis angular rate sensor. This is the module I bought for reference
More information can be found at http://www.st.com/content/st_com/en/products/mems-and-sensors/gyroscopes/l3gd20.html about the sensor
Features
- Three selectable full scales (250/500/2000 dps)
- I2 C/SPI digital output interface
- 16 bit-rate value data output
- 8-bit temperature data output
- Two digital output lines (interrupt and data ready)
- Integrated low- and high-pass filters with user-selectable bandwidth
- Wide supply voltage: 2.4 V to 3.6 V
- Low voltage-compatible IOs (1.8 V)
- Embedded power-down and sleep mode
- Embedded temperature sensor
- Embedded FIFO
- High shock survivability
Here is a schematic showing the module I had.
Connection
Wemos Mini Connection | GY-50 L3GD20 connection |
3v3 | Vcc |
Gnd | Gnd |
SDA – Wemos D2 | SDA |
SCL – Wemos D1 | SCL |
Code
I managed to find the following library that seemed to work well – https://github.com/pololu/l3g-arduino
This is the test example
#include <Wire.h>
#include <L3G.h>
L3G gyro;
void setup() {
Serial.begin(9600);
Wire.begin();
if (!gyro.init())
{
Serial.println("Failed to autodetect gyro type!");
while (1);
}
gyro.enableDefault();
}
void loop() {
gyro.read();
Serial.print("G ");
Serial.print("X: ");
Serial.print((int)gyro.g.x);
Serial.print(" Y: ");
Serial.print((int)gyro.g.y);
Serial.print(" Z: ");
Serial.println((int)gyro.g.z);
delay(100);
}
Links
You can pick up one these sensors for about $4
L3GD20 3-axis Gyroscope Sensor replace L3G4200D Angular velocity module