连接到树莓派的加速度传感器adxl335的输出为1。如何获取十进制格式的输出

Question

我用python写了下面的程序，并尝试读取加速度计传感器的输出。当我打印加速度计的输出时，我得到的是1。请告诉我如何以数字形式获得实际输出，以了解加速度计的确切倾斜。

import RPi.GPIO as io # import the GPIO library we just installed but call it "io"
import time
io.setmode(io.BCM)
io.setwarnings(False)

x_axis = 17 # this is the GPIO number our accelerometer's x axis is connected
y_axis = 27 # this is the GPIO number our accelerometer's x axis is connected
z_axis = 22 # this is the GPIO number our accelerometer's x axis is connected

io.setup(x_axis, io.IN) # initialize receiver GPIO to take input
io.setup(y_axis, io.IN) # initialize receiver GPIO to take input
io.setup(z_axis, io.IN) # initialize receiver GPIO to take input

try:
    while True:
        x = io.input(x_axis)
    if x:
        print"x-axis ="
        print(x)
        time.sleep(1)

        y = io.input(y_axis)
    if y:
        print"y-axis"
        print(y)
        time.sleep(1)

        z = io.input(y_axis)
    if z:
        print"z-axis"
        print(z)
        time.sleep(1)

except KeyboardInterrupt:
    print("Received Interrupt")


output

pi@raspberrypi /opt/embedded $ sudo python accelerometer.py
x-axis =
1
y-axis
1
z-axis
1
x-axis =
1
y-axis
1
z-axis
1
x-axis =
1
y-axis
1
z-axis
1

Answer 1

您可以考虑Joan的短程序，用于稍微不同的IMU，如下所示

https://www.raspberrypi.org/forums/viewtopic.php?f=44&t=139584&p=949755#p949755

祝您下午愉快！:)

Answer 2

实际上，ADXL335是一种模拟传感器，树莓pi不能读取模拟值，它只能读取高或低的模拟值输出。要获得传感器的精确值，应使用与树莓pi连接的ADC(模数转换器)或使用Arduino板，它可以读取传感器的连续数值输出。