User’s Manual
2.3.24LCD Backlight Brightness Adjustment Connector (VR1)
PIN Signal
1 GND
2 VR
3 VCC
VCC
VR1
3
J1 pin 4
2
1
Variation Resistor (Recommended: 4.7KΩ, >1/16W)
2.3.25STN LCD Contrast Adjustment Connector (VR2)
PIN Signal
1 GND
2 Vcon
3 VCC3