Raspberry pi zero w + lidar lite v3

[table id=2 /]

[codesyntax lang= »python »]

import smbus
import time
bus=smbus.SMBus(1)
addr=0x62

while True:
    bus.write_byte_data(0x62,0x00, 0x04)   
    val_high=bus.read_byte_data(0x62,0x0f)   
    val_low=bus.read_byte_data(0x62,0x10)   
    dist_cm=val_high*256+val_low
    print `dist_cm` + " cm   "
    time.sleep(1)

[/codesyntax]

Maj 22/12/2018

J’ai du réinstaller le Pi 0 W et le lidar ne fonctionnait plus. Faire :

https://github.com/raspberrypi/firmware/issues/828

  1. Download the old module here.
  2. Copy this file into /boot/overlays.
  3. In /boot/config.txt add the line dtoverlay=i2c1-bcm2708 at the end.

Veilleuse

Le supercondensateur est rechargé par le panneau solaire. La led s’allume quand il fait sombre et le seuil est réglable via le potentiomètre.

Raspberry pi Zero W + servo

Source : http://espace-raspberry-francais.fr/Composants/Controler-Servo-Moteur-Raspberry-Francais/

[codesyntax lang= »python »]

import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BCM)
GPIO.setup(17, GPIO.OUT)
GPIO.setwarnings(False)

ajoutAngle = 5

print("\n+----------/ ServoMoteur  Controlleur /----------+")
print("|                                                |")
print("| Le Servo doit etre branche au pin 11 / GPIO 17 |")
print("|                                                |")
print("+------------------------------------------------+\n")

print("Comment controler le Servo ?")
choix = input("1. Choisir un angle\n2. Faire tourner de 0 a 180\n")

if choix == 2 :

    nbrTour = input ("Entrez le nombre d'aller-retour que fera le Servo :\n")

    pwm=GPIO.PWM(17,100)
    pwm.start(5)

    angle1 = 0
    duty1 = float(angle1)/10 + ajoutAngle

    angle2=180
    duty2= float(angle2)/10 + ajoutAngle

    i = 0

    while i <= nbrTour:
         pwm.ChangeDutyCycle(duty1)
         time.sleep(0.8)
         pwm.ChangeDutyCycle(duty2)
         time.sleep(0.8)
         i = i+1
    GPIO.cleanup()

if choix == 1 :
    angle = input("Entrez l'angle souhaite :\n")
    duree = input("Entrez la duree durant laquelle le Servo devra tenir sa position : ( en secondes )\n")

    pwm=GPIO.PWM(17,100)
    pwm.start(5)

    angleChoisi = float(angle)/10 + ajoutAngle
    pwm.ChangeDutyCycle(angleChoisi)
    time.sleep(duree)
    GPIO.cleanup()

[/codesyntax]

Raspberry pi zero W + MCP3002 (ADC)

Source : http://makesensors.botbook.com/

[codesyntax lang= »python »]

# pot.py - potentiometer with mcp3002
# (c) BotBook.com - Karvinen, Karvinen, Valtokari
import spidev # installation help in book and botbook_mcp3002.py	# <1>
import time

def readPotentiometer():
	spi = spidev.SpiDev()	# <2>
	spi.open(0, 0)	# <3>
	command = [1, 128, 0]	# <4>
	reply = spi.xfer2(command)	# <5>
	#Parse reply 10 bits from 24 bit package
	data = reply[1] & 31	# <6>
	data = data << 6	# <7>
	data = data + (reply[2] >> 2)	# <8>
	spi.close()	# <9>
	return data

def main():
	while True:
		potentiometer = readPotentiometer()	# <10>
		print("Current potentiometer value is %i " % potentiometer)
		time.sleep(0.5)	

if __name__ == "__main__":
	main()

[/codesyntax]

 

Raspberry pi zero W + water pump

[codesyntax lang= »python »]

#!/usr/bin/python
# coding=utf-8

import RPi.GPIO as GPIO         ## Import GPIO Library
import time                     ## Import 'time' library (for 'sleep')
import os 
import commands,sys

outPin = 21                     
GPIO.setmode(GPIO.BCM)        ## Use BOARD pin numbering
GPIO.setup(outPin, GPIO.OUT)    ## Set pin 21 to OUTPUT

GPIO.output(outPin, 1)  ## Turn off LED
time.sleep(10)
GPIO.output(outPin, 0) 
GPIO.cleanup()      

[/codesyntax]

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Raspberry pi zero W + Soil Humidity Sensor

20170801_195806

20170801_195940

[table id=1 /]

[codesyntax lang= »python »]

#!/usr/bin/python
# coding=utf-8

import RPi.GPIO as GPIO ## Import GPIO Library
import time ## Import 'time' library (for 'sleep')
import os
import commands,sys

inPin = 2 
GPIO.setmode(GPIO.BCM) ## Use BOARD pin numbering
GPIO.setup(inPin, GPIO.IN) ## Set pin 2 to OUTPUT

value=GPIO.input(inPin)
print value
GPIO.cleanup()

[/codesyntax]

 

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