RPI.GPIO.TH

To collect general GPIO components used with Raspberry Pi created by Thai community. This project is subject to change anytime, please come to see frequently.

Installation

Python SpiDev

$ git clone https://github.com/doceme/py-spidev.git
$ cd py-spidev
$ sudo python setup.py install

One-Wire

1. Add these lines at the bottom of /etc/modules

   w1-gpio
   w1-therm
   

2. Add this line at the bottom of /boot/config.txt

   dtoverlay=w1-gpio-pullup,gpiopin=XX
   

   Where XX is GPIO to be connected to sensor.

I2C

1. Enable Raspbian I2C interface as mensioned in https://www.raspberrypi.org/documentation/configuration/raspi-config.md
2. Install python interface :

   $ sudo apt-get install i2ctools
   $ sudo apt-get install python-smbus python3-smbus
   

---

Examples

LED

from gadgets.lights.led import LED
import time
l = LED(7) #connect anode to 7th pin on Raspberry Pi
l.on() # turn led on
time.sleep(2)
l.off() # turn led off
time.sleep(2)
l.blink(3,1) # blink led 3 times with 1 second interval.
l.cleanup()

PWM LED

from gadgets.lights.led import PWM_LED
import time
l2 = LED(7) #connect anode to 7th pin on Raspberry Pi
l2.brighten(start=0,end=100,step=1,dur=0.05)
l2.dim(start=100,end=0,step=-1,dur=0.05)
l2.cleanup()

ARRAY LED (Blinker)

from gadgets.lights.led import ARRAY_LED
import time
def lighting(l):
for j in range(2):
for i in ps:
l.blink([i],1,0.1)
for k in ps_rev:
l.blink([k],1,0.1)
for j in range(3):
l.blink(ps,3,0.1)
time.sleep(0.5)
ps = [29,31,33,35,37]
ps_rev = ps[::-1] # reverse list
l = ARRAY_LED(ps)
for i in range(10):
lighting(l)
l.cleanup()

---

2D SPI JoyStick

import signal
import time
from gadgets.joysticks import JoyStick2D
def signal_handler(signal,frame):
global stop_flag
stop_flat = True
joystick = JoyStick2D() #default
stop_flag = False
while not stop_flag :
direction = joystick.get_direction()
left,right,up,down,stop = direction
print left,right,up,down,stop

---

Step Motor

Normal Step

from gadgets.motors.step_motor import Model_28BYJ_48
from gadgets.joysticks import JoyStick2D
st_mot = Model_28BYJ_48([11,15,16,18])
#change directions and step-sequences
print("Clockwise with 4 step-sequences.")
st_mot.step(1,direction=2,waiting_time=2)
time.sleep(2)
print("Clockwise with 8 step-sequences.")
st_mot.step(1,direction=1,waiting_time=2)
time.sleep(2)
print("Counter Clockwise with 4 step-sequences.")
st_mot.step(1,direction=-1,waiting_time=2)
time.sleep(2)
print("Counter Clockwise with 8 step-sequences.")
st_mot.step(1,direction=-2,waiting_time=2)
time.sleep(2)
#change speed by changing waiting time
for sp in range(2,5):
print("Waiting = ",str(sp))
st_mot.step(1,direction=2,waiting_time=sp)
time.sleep(2)

Sweeper

1 step motor

from gadgets.motors.step_motor import Model_28BYJ_48
st_mot = Model_28BYJ_48([11,15,16,18])
for i in range(5):
	st_mot.angular_step(180,direction=2,waiting_time=2,bi_direction=True) 	

2 step motors

from gadgets.motors.step_motor import Model_28BYJ_48
import threading
st_mot = Model_28BYJ_48([11,15,16,18])
st_mot2 = Model_28BYJ_48([31,33,35,37])
def do1():
for i in range(5):
st_mot.angular_step(180,direction=2,waiting_time=2,bi_direction=True)
def do2():
st_mot2.step(4,direction=2,waiting_time=2)
t1 = threading.Thread(target=do1)
t2 = threading.Thread(target=do2)
t1.start()
t2.start()

Servo 5V

from gadgets.motors.servos import Servo5V
import time
import random
servo = Servo5V(pin_number=12,freq=100)
count = 0
while count < 185:
time.sleep(0.1)
servo.write(count)
count += 5
servo.cleanup()

---

Weather

Temperatur sensor DS18B20

from gadgets.weather.DS18B20 import DS18B20 
import time
_id = '28-0000066a6165' # replace it with your own id
sensor = DS18B20(_id,2) # create DS18B20 instance with 2 seconds time interval.
try:
sensor.start() #activate sensor
while True :
print(sensor.C) # show temperature in Celsius. Use sensor.F for Fahrenheit.
time.sleep(2) # take a break
except KeyboardInterrupt:
print("Stoping")
finally:
sensor.stop() # Tell sensor to stop reading.
sensor.join() # Wait util sensor complete its job.

---

Navigators

GYRO GY61

from gadgets.navigators.gyro import GYRO_GY61
import signal
import time
def signal_handler(signal,frame):
global stop_flag
stop_flat = True
gyro = GYRO_GY61(0,0,1,2)
stop_flag = False
while not stop_flag :
direction = gyro.get_data()
x,y,z = direction
print x,y,z

---

Environment

PIR

from gadgets.environment.motion import PIR
if name == "main":
try :
pir = PIR(pin_number=11,interval=10)
# PIR connected to Pin 11 of Raspi with 10 millisecond interval of detection
pir.start()
print('Ctrl-c to exit.')
while 1 :
print(pir.result()) # 1 : motion detected, 0: no motion detected
except KeyboardInterrupt :
pir.stop()
pir.cleanup()