C1S0000_light_sensor

---

This sensor detects the intensity of the light and the relative angle of the light source.

Specification

---

• Operating voltage: 3.0V-5.0V
• Operating current: < 15mA
• Light angle value: 0°-337.5°, 0xffff(Directly above)
• Light angle accuracy: +/- 22.5°
• Light intensity value: Just the relative analog voltage value of the light intensity.
• Communication: IIC
• Connector: XH2.54-4P
• Size: 64*64*10mm

IIC communication

---

Protocol:

Maximum clock speed: 100K

Slave address	1: 0	…	8: 315	9: Centre	10: H_Angle	11: L_Angle
0x2c	0-255	…	0-255	0-255	0-255	0-255

Light angle value: H_angle*256 + L_angle, if it is 0xffff, the light source is directly above.

The I2C communication protocol can be referred to: Click me

Sample code

---

For Raspberry pi Pico (MicroPython)

# https://docs.micropython.org/en/latest/rp2/quickref.html
import time
from machine import Pin, I2C 

"""
Wiring: 
Pico         Sensor
GND          GND
VCC          3V3 
GP4          SDA 
GP5          SCL 
"""

class Ph_iic:
    address = 0x2c
    data = [0,0,0,0,0,0,0,0,0,0,0]
    
    def __init__(self, scl=5, sda=4):
        self.i2c = I2C(0, scl=Pin(5), sda=Pin(4), freq=100_000)
    
    def read(self):
        buf = bytearray(11)
        self.i2c.readfrom_into(self.address, buf)
        for i in range(11):
            self.data[i] = buf[i]
    
    # Read the directional value of the light.
    # resolution ratio: 22.5degree
    # return: 22.5*i, i=0--15
    def readDegree(self):
        self.read();
        return self.data[9]*256+self.data[10]
    
    # index: 0--8, Map to 9 light-sensitive sensors on the module.
    def readPh(self, index):
        self.read();
        return self.data[index]

if __name__ == '__main__':
    ph = Ph_iic()

    while True:
        ph.read()
        print(ph.data)
        # print(ph.readPh(8))
        # print(ph.readDegree())
        time.sleep_ms(200)

---

End!