Por: How to interface 8 LCD displays and 24 leds with only two wires |...
[...] How to interface 8 LCD displays and 24 leds with only two wires – [Link] [...]
View ArticlePor: How to interface 8 LCD displays and 24 leds with only two wires | Make,...
[...] How to interface 8 LCD sights also 24 leds among except pair messages – scan else about this proposition feature [...]
View ArticleBy: Jostyn Ferreira
Hey, I would like to ask you a few questions on this through email. please i seriously need the help. My email is jostynfr@gmail.com feel free to reply when possible. and thanks in advance
View ArticleBy: Antony White
Very interesting project. I have been trying to connect 6 LCD displays (1×16) to a AVR Mega8515. I use 4bit mode for the Lcds connecting D4, 5, 6 ,7 and R/S in a common bus to 5 outputs on the Mega8515...
View ArticleBy: jechavarria
Hi Antony! First of all, thanks for read the blog and for your comment! About your question, I don’t see any error in your approach (it’s difficult without references, schematics or source code!). Did...
View ArticleBy: Antony White
Hello Jechavarria, Many thanks for your reply. My SW does initialise all the Lcds at once. Each command is passed to a subroutine which sends it in two 4 bit parts to the bus pulsing all the E lines...
View ArticleBy: jechavarria
Hi Antony! Sorry, maybe I don’t explain well, with the initialization I try to say that you must initialize one by one, not all at the same time. But for your comment, I think you just do this, so this...
View ArticleBy: Martin
Hello Jesus, this is a very nice project! I have also experimented with port expanders but then opted for the use of cheap Microcontrollers (ATtiny2313 / PIC16F54). These offer at slightly lower cost...
View ArticleBy: Antony White
Hello Martin, I’m very interested in your project. I have not managed to run 8 Lcds from a mega8515 and I think the main problem has been long leads to the lcd units. I have tried terminating resistors...
View ArticleBy: Martin
Hi Antony, my solution provides to use a microcontroller for each display. I usually use UART for data transport, rarely I2C. At the moment I am experimenting with LIN. This protocol supports virtual...
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