Instrumentasi (FQ018) TA 2024/2025-3 UKSW - Membaca Serial Output Arduino Menggunakan Python

arduino_sample_project.ino

/**
 * By Samarthya Lykamanuella on 2023-10-15
 * SOURCE: https://www.circuitbasics.com/how-to-use-photoresistors-to-detect-light-on-an-arduino/
 */

int PHOTO_PIN = A0;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  int light = analogRead(PHOTO_PIN);
  Serial.println(light);
  delay(100);
}

arduino_serial_reader.py

import serial

# Hanya bisa di Linux.
s = serial.Serial('/dev/ttyACM0', 9600)

# Kalau Windows, ubah '/dev/ttyACM0' ke 'COM0'.
# Jangan lupa sesuaikan BAUD rate (9600, 115200, dsb.).
s = serial.Serial('COM0', 9600)

while True:
    print(s.read_until().decode().strip())

arduino_serial_reader_with_csv_writer.py

from datetime import datetime as dt
import pandas as pd
import serial
import time

# Hanya bisa di Linux.
# Gunakan "COM0" untuk Windows.
s = serial.Serial('/dev/ttyACM0', 9600)

df = pd.DataFrame({
    'date': [],
    'time': [],
    'serial_in': [],
})

while True:
    try:
        d = str(dt.now())
        date = d.split(' ')[0]
        time = d.split(' ')[1]
        serial_in = s.read_until().decode().strip()
        print(date, time, serial_in)
        
        # Writing the data to external file.
        df = df._append(
            {
                'date': date,
                'time': time,
                'serial_in': serial_in,
            },
            ignore_index=True
        )
    except UnicodeDecodeError:
        pass
    
    # time.sleep(0.1)
    # Write the data.
    df.to_csv('sample_001.csv', index=False)