For backlighting purpsoe, 5V dc supply is fed to the backlight pins BL1 and BL2 (also labelled as LED+/BL+ and LED-/BL-) through a suitable current limiting resistor (for instance, with a 100-Ohm one) ...

74HC164, a diode and a resistor. wire the LCD’s D4-D7 to HC164 Q4-Q7, RS to Q3 and R/!W to ground. wire a diode between HC164 Q0 and the LCD’s E line, cathode to Q7. now finish off by adding a ...

As explained by Arduino to Go, each color band on the resistor corresponds to a number but this can differ depending on the band's placement.It's not complicated, but the sheer number of colors ...