simple gyroscope(MPU6050) with digital low pass filter

from left to right: Arrow, Bubble, Line

• MCU(Esp12(esp8266))
• Gyro module(MPU6050)
• OLED(SSD1306, I2C)

• Arduino

I2cdev, ThingPulse OLED SSD1306

all have been backup in library_backup directory.

y += beta * (x - y);

Source: Low pass filter algorithm origin

It can be converted to an algebraic relation between the samples of the filter output sequence 𝑦[𝑛] and the filter input 𝑥[𝑛] as: 𝑦[𝑛+1]−(1−b)𝑦[𝑛]=b𝑥[𝑛]which is also equivalent to𝑦[𝑛]−(1−b)𝑦[𝑛−1]=b𝑥[𝑛−1]

Update: Sep.28, 2018