Arduino Firmata + PyFirmata

GitHub - tino/pyFirmata: Python interface for the Firmata (http://firmata.org/) protocol. It is compliant with Firmata 2.1. Any help with updating to 2.2 is welcome. The Capability Query is implemented, but the Pin State Query feature not yet.Python interface for the Firmata (http://firmata.org/) protocol. It is compliant with Firmata 2.1. Any help with updating to 2.2 is welcome. The Capability Query is implemented, but the Pin State Query feature not yet. - GitHub - tino/pyFirmata: Python interface for the Firmata (http://firmata.org/) protocol. It is compliant with Firmata 2.1. Any help with updating to 2.2 is welcome. The Capability Query is implemented, but the Pin State Query feature not yet.https://github.com/tino/pyFirmata简单说就是把 arduino 板子当作一个外设，由PC直接接管，不需要 Arduino编程。

实验1：

# 第一个实验 闪灯  https://www.jianshu.com/p/cbe5eacc6a2b
# 用 Arduino IDE 为 ArduinoUNO 写入官方自带例程 Firmata ---> Standard Firmata
# python 安装所需的库 pip install pyfirmata
# 下面代码复制进 python 并运行
 
from pyfirmata import Arduino, util  
import time
board = Arduino('COM3')      # UNO 所使用的串口号   
 
while 1:
     board.digital[13].write(1)          
     time.sleep(0.2)    
     board.digital[13].write(0)          
     time.sleep(0.2)
     board.digital[13].write(1)          
     time.sleep(0.2)    
     board.digital[13].write(0)          
     time.sleep(0.2)
     board.digital[13].write(1)          
     time.sleep(0.2)
     board.digital[13].write(0)          
     time.sleep(1)  

python 有很多开发环境选择，比如下图这个 jupyterlab

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实验2：

# 呼吸灯 ，找个LED接数字11脚和地，临时试试不用电阻什么的，不会烧，
# UNO板载LED是13，不支持PWM
 
import time
import pyfirmata
 
delay = 0.1
brightness = 0
board = pyfirmata.Arduino("com11")
led = board.get_pin('d:11:p')    
        
while True:
# increase
    for i in range(0, 10):
        brightness = brightness + 0.1
        print ("Setting brightness to %s" % brightness)
        led.write(brightness)
        board.pass_time(delay)
 
# decrease
    for i in range(0, 10):
        print ("Setting brightness to %s" % brightness)
        led.write(brightness) 
        brightness = brightness - 0.1     
        board.pass_time(delay)

其他实验后续测试