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The display calculated and displayed, altitude,elapsed time, balloon temperature and rate of climb as a bar chart. There have been a couple of old AVR projects which drive sorry, control these displays directly using external SRAM but given the speed they don’t have much in the way of ‘options’.

I’ve attached a pdf from the manufacturer. The PIC was only running at 4mhz and lc7401 no difficulty updating the display every half second.

You must log in or register to reply here. Often some delay is required before a ‘end of line’ sync pulse, so say this is Haven’t checked the display but seems like its controllerless. Just saying hello Started by MichaelaJoy Yesterday at 6: I have other projects on my list right now so I’ll leave this LCD on hold. I believe in general the term ‘driver’ in the context of Dztasheet refers to the pixel drivers, which are indeed just giant shift registers that work on positive and negative voltage, and the ld79401 ‘controllers’ are used for higher functions such as refreshing, addressing, text generation, window-in-window, cursors etc.


Much like a raster scan on a TV.

320 x 240 Grpahic Display for $4

I wanted to see a photo of the back because I think the traces are there for a controller and RAM. I recently developed an instrument package for one of my hot air balloons using a 64 x pixel display with KS and KS controllers. To participate you need to register.

I’m not trying to discourage folk from using the display, x’s are awesome!

Sorry for the pesimistic ‘numbers’ post. When I was talking about a “controller,” I was thinking of a chip to handle fonts and graphic placement.

The larger LCD you posted has no such controller.

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Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at Please provide reference to this type of display being used with an on board controller. So, clocking in data across a line, then moving to next line before flying back to the top, if you draw a pixel in one location, unless you draw it again on every frame, it fades, so it require constant refreshing, usually cl79401 around Hz.


So I know it can be done for slowly changing data. For a better experience, please enable JavaScript in your browser before proceeding. This site uses cookies to help personalise content, tailor your experience and to keep you logged datasueet if you register. Thanks for the clarification.

Click here to register now. Sceadwian Banned Feb 8, So, even without drawing anything on screen, printing fonts, your micro will be too busy just taking data from memory, and sending it oc79401 the display. It is such a mundane task, moving data, doesn’t require intelligence, just counters, but at a speed beyond that of most 8-bit devices. Thread starter bobledoux Start date Feb 7, Welcome to our site!

LC Datasheet catalog

It appears to require an external driver. It stores the bitmap in memory, and constantly refreshes the display without intervention from datasheef is controlling it. I have seen boards similar to this one, that have traces for, but do not include the The SED is somewhat limited, often used for that displays’ slighter smaller cousins.