In more detail, the data acquisition system consists of a webcam connected to a Raspberry Pi, with the SKU capacitive sensors connected to an Arduino Mega. Both systems were linked via serial connection. The Ra
Backlight Resistor: Always use a 🧱220Ω resistorfor the LCD backlight (between pinAand5V) to control current and extend its lifespan. LED Resistors: Add 🧱1kΩ resistorsin series with each LED (Green, Yellow, Red, Blue) to prevent damage to the LED and the Arduino pins. ...