[EP.5] 라즈베리파이에서 컬러 센서(TCS230) 제어

1. 컬러 센서(TCS 230)

1.1  Terminal Functions

Terminal name	I/O	Description
GND		Power supply ground, All voltages are referenced to GND.
OE	I	Enable for fo (active low).
OUT	O	Output frequency(fo).
S0, S1	I	Output frequency scailing selection inputs.
S2, S3	I	Photodiode type selection inputs.
Vdd		supply voltage

 

1.2 Selectable Options

S0	S1	Output Frequency Scailing		S2	S3	Photodiode Type
L	L	Power Down		L	L	Red
L	H	2%		L	H	Blue
H	L	20%		H	L	Clear (no filter)
H	H	100%		H	H	Green

 

1.3  회로 연결 (아두이노 기준)

 

2.  컬러 센서 테스트 코드

import RPi.GPIO as GPIO
import time

# GPIO 핀 번호 설정
S0 = 11
S1 = 12
S2 = 13
S3 = 15
OUT = 16

# GPIO 핀 모드 설정
GPIO.setmode(GPIO.BOARD)
GPIO.setup(S0, GPIO.OUT)
GPIO.setup(S1, GPIO.OUT)
GPIO.setup(S2, GPIO.OUT)
GPIO.setup(S3, GPIO.OUT)
GPIO.setup(OUT, GPIO.IN)

# 출력 주파수 설정
GPIO.output(S0, GPIO.LOW)
GPIO.output(S1, GPIO.HIGH)

# 색상 감지 함수
def read_color():
    # 색상 감지 주기 설정
    time.sleep(0.1)

    # RGB 값 읽기
    GPIO.output(S2, GPIO.LOW)
    GPIO.output(S3, GPIO.LOW)
    r = GPIO.input(OUT)

    GPIO.output(S2, GPIO.HIGH)
    GPIO.output(S3, GPIO.HIGH)
    g = GPIO.input(OUT)

    GPIO.output(S2, GPIO.LOW)
    GPIO.output(S3, GPIO.HIGH)
    b = GPIO.input(OUT)

    # RGB 값을 출력
    print("R: " + str(r) + " G: " + str(g) + " B: " + str(b))

# 색상 감지 함수 호출
while True:
    read_color()