Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week
This is cheapest GLCD that i found.
Product is missing datasheet. There is no clear mart witch display chip or interface is used. Mine just have mark 12864B which is not very helpful.
After lot of time wasted this is ST7920. Wiring for 5V supply is here http://renoirsrants.blogspot.com/2013/02/hello-world.html. You can use u8glib to make 'hello world' code. Absolute minimum is: Pin1 - GND Pin2 - Vcc Pin4 - CS Pin5 - MOSI Pin6 - SCK Pin19 - 150ohm resistor to Vcc Pin20 - GND You do not need pot for contrast as shown in some setups.
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