Changes by last author:
Changed:
* LCD contrast: there are onboard SMD resistor pads for setting LCD contrast bias, but adjusting this with resistors at the LCD is recommended: to allow swapping between different makes of LCD |
* LCD contrast: there are onboard SMD resistor pads for setting LCD contrast bias, but adjusting this with resistors at the LCD (or heatshrinked inside LCD cable) is recommended: to allow swapping between different makes of LCD |
LCD that requires a negative (appr. -3V) contrast voltage. |
LCD that requires a negative (appr. -3V) contrast voltage (very rare among those manufactured after 2012). |