Table 4.

Main specifications of RGB-sensing device.

Part	Name	Specification
Color Sensor	Adafruit TCS34725 RGB Sensor	Sensing factor: red, green, blue, clear light sensing values; 3 × 4 photodiode array with IR-Blocking Filter; Measurable range: 0 to 65,535 for each RGB Channel Operating free-air temperature: −30–70 °C
MCU	Arduino Uno	Microcontroller: ATmega328P
WiFi Shield	P4S-348	PHPoC Shield for Arduino WLAN; topology: Ad-hoc, Infrastructure, Soft AP
Diffuser	Ground Glass	Diameter (mm): 10.00 ± 0.25; Thickness (mm): 1.60; Wavelength Range (nm): 350–2000