arduino简单应用实例（Arduino实例二十九）
arduino简单应用实例（Arduino实例二十九）int sensorpin = A0; void setup() { // initialize serial communication at 115200 bits per second to match that of the python script: Serial.begin(115200); } void loop() { // read the input on analog pin 0 float sensorValue = analogRead(sensorpin); byte data = Serial.read(); if (data == 's') { Serial.println(sensorValue); delay(10); // delay in between reads for
1 电路连接示意图
2 实物连接照片
3 Python 程序
import time
import matplotlib.pyplot as plt
from drawnow import *
import serial
val = [ ]
cnt = 0
port = serial.Serial('COM3' 115200 timeout=0.5)
plt.ion()
#create the figure function
def makeFig():
plt.ylim(-1023 1023)
plt.title('Osciloscope')
plt.grid(True)
plt.ylabel('ADC outputs')
plt.plot(val 'ro-' label='Channel 0')
plt.legend(loc='lower right')
while (True):
port.write(b's') #handshake with Arduino
if (port.inWaiting()):# if the Arduino replies
value = port.readline()# read the reply
print(value)#print so we can monitor it
number = float(value) #convert received data to integer
print('Channel 0: {0}'.format(number))
# Sleep for half a second.
time.sleep(0.01)
val.append(int(number))
drawnow(makeFig)#update plot to reflect new data input
plt.pause(.000001)
cnt = cnt 1
if(cnt>50):
val.pop(0)#keep the plot fresh by deleting the data at position 0
4 Arduino程序
int sensorpin = A0;
void setup() {
// initialize serial communication at 115200 bits per second to match that of the python script:
Serial.begin(115200);
}
void loop() {
// read the input on analog pin 0
float sensorValue = analogRead(sensorpin);
byte data = Serial.read();
if (data == 's')
{
Serial.println(sensorValue);
delay(10); // delay in between reads for stability
}
}
5 效果
6 视频效果
Ardrino借助Python做一个示波器 - 西瓜视频 (ixigua.com)
