12864 at the factory the contrast has been tuned to the user when in use th ird pin can not pick anything, this experiment board so the addition to compatible with more than 12,864 LCD LCD contrast adjustment potentiometer, if the usersupporting the 12864 do not cares, the third pin of the LCD is vacant you can. Some LCD power consumption is relatively large, when in use the backlight of the LCD 19, 20 pins not then, so the font will be very clear.

21.无线遥控+继电器控制\12864
......................\12864.hex
......................\12864.lnp
......................\12864.M51
......................\12864.Opt
......................\12864.plg
......................\12864.Uv2
......................\12864A-3.c
......................\12864A-3.LST
......................\12864A-3.OBJ
......................\12864_Opt.Bak
......................\12864_Uv2.Bak
......................\程序说明.txt
21.无线遥控+继电器控制

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