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Reverse engineering LCD signals on HP power supply

I have recently acquired an HP 6632A power supply and was inspired by Roberto Barrios' project of replacing the screen with an OLED display to do the same. However, it is evident that the 6632A is ...
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574 views

How do I get this LCD to work on Proteus? [closed]

I'm trying to display the letter "A" on LM016L (datasheet). I keep switching the E input but I get nothing. This is my circuit:
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279 views

Technical question on 16x2 LCD

In a 16x2 LCD there are 16 columns and 2 rows of characters, each character is made up of a grid of 40 pixels. My question is, do each of these characters have their own driver that drive every pixel ...
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223 views

Help with this protocol - LCTC

I have a 640x200 monochrome display from a HP 200LX palmtop computer. On its PCB I can see two types of ICs: HD66204TFL and HD66205TFL from Hitachi. Here is its schematic (it has 200 px not 240 as in ...
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663 views

Function setting on SPLC780D LCD

I'm drawing a bit of a blank with this. I have a 1602A-1 16x2 LCD screen hooked up to an i2c port expander chip. I'm using the screen in 4 bit mode so I have DB4-7 hooked up to GPIO 0-3 respectively. ...