사물인터넷융합기술 - 텀프로젝트

Raspberry pi 4, DC motor, oled

- 아래의 사진에서 우측에 있는 버튼은  oled와 모터의 전원을 제어하고, 좌측에 있는 버튼은 모터의 속도를 제어함

- adafruit의 circuit python 모듈을 사용하여 개발

 

import time
import subprocess
from xmlrpc.client import boolean
from board import SCL, SDA
import busio
from PIL import Image, ImageDraw, ImageFont

import time                                     
from adafruit_motorkit import MotorKit

import adafruit_ssd1306

import board
import digitalio

#Motor Speed
switch_pin = board.D16 #power
motor_pin = board.D17 #motor

kit = MotorKit()

power_switch = digitalio.DigitalInOut(switch_pin)
motor_speed_switch = digitalio.DigitalInOut(motor_pin)

power_switch.direction = digitalio.Direction.INPUT
power_switch.pull = digitalio.Pull.UP

motor_speed_switch.direction = digitalio.Direction.INPUT
motor_speed_switch.pull = digitalio.Pull.UP

power1 = True
speed1 = 0.5

i2c = busio.I2C(SCL, SDA) 
disp = adafruit_ssd1306.SSD1306_I2C(128, 32, i2c)

while True:
    if not power_switch.value:
        # print('button1')  
        power1 = not power1

        if power1:
            kit.motor1.throttle = 0
            disp.poweroff()      

        if not power1:
            kit.motor1.throttle = speed1

            disp.poweron()
            disp.fill(0)
            disp.show()

            width = disp.width
            height = disp.height
            image = Image.new('1', (width, height))

            draw = ImageDraw.Draw(image)

            draw.rectangle((0, 0, width, height), outline=0, fill=0)

            padding = -2
            top = padding
            bottom = height-padding

            x = 0

            font = ImageFont.load_default()

            draw.rectangle((0, 0, width, height), outline=0, fill=0)
            cmd = "hostname -I | cut -d\' \' -f1"
            IP = subprocess.check_output(cmd, shell=True).decode("utf-8")
            cmd = "top -bn1 | grep load | awk '{printf \"CPU Load: %.2f\", $(NF-2)}'"
            CPU = subprocess.check_output(cmd, shell=True).decode("utf-8")
            cmd = "free -m | awk 'NR==2{printf \"Mem: %s/%s MB %.2f%%\", $3,$2,$3*100/$2 }'"
            MemUsage = subprocess.check_output(cmd, shell=True).decode("utf-8")
            cmd = "df -h | awk '$NF==\"/\"{printf \"Disk: %d/%d GB %s\", $3,$2,$5}'"    
            Disk = subprocess.check_output(cmd, shell=True).decode("utf-8")

            draw.text((x, top+0), "IP: "+IP, font=font, fill=255)
            draw.text((x, top+8), CPU, font=font, fill=255)
            draw.text((x, top+16), MemUsage, font=font, fill=255)
            draw.text((x, top+25), Disk, font=font, fill=255)

            disp.image(image)
            disp.show()

    if not motor_speed_switch.value:
        # print('button2')

        if speed1 == 1.0:
            speed1 = 0.5
            kit.motor1.throttle = speed1
            # print(speed1)

        else:
            speed1 += 0.5
            kit.motor1.throttle = speed1
            # print(speed1)

    time.sleep(0.1)