Issue link: https://iconnect007.uberflip.com/i/1525368
AUGUST 2024 I PCB007 MAGAZINE 51 Figure 5: DIY colorimeters can be fabricated using two LEDs, a battery, and a photo sensor (an LED, a CdS photoresistor, or a purchased color sensor), including the LEGO Student Colorimeter 2-4 . Figure 4: Color indicator test kits are available for most PCB processes.