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row 74595
Hello Omid Juve
i have build 1 led moving emssage 8x80 its working good but the brightness is not good i have connected rows directly from portd and for cols scanning from 74hc595 i not attached any uln nor any resistors its connecting direcly pls can u seuggest me what resistors i...
pic16f 7x40 led
Hello to all
i need help regarding the led moving message display 8x80
i am trying to build the led moving message so for start i made 8x40 it using mikroc compiler
the hardware is pic16f877a , 74hc595
for rows i am connection through 100 ohms from portd to 8 rows and for...
moving message effects using visual basic
Hello xorcise
i made 1 using pic16f877a and using shift register 74hc595 8x24 its working perfectly i am attached the eeprom 24c02 saving the data in eeprom and reading and displaying and scrolling i just confuse how to increase the brightness
for...
multiplex led matrix 7x40
Hello eugenesiew
I am also trying to desing the same LED Moving message Displays so far i tried to do 8x24 Using PIC16F877A and 74HC595 ,ULN24C02 till now i am saving the data from usart to 24C02 EEProm
what i am looking is to develop the software through visual...
moving dot matrix display gif
Hello Akram
i downloaded ur project its good as i am developing the same led moving message 8x80 and 16x80 for start i am designing 8x80 using pic16f877a and 74hc595
can i use ur code in this if u have any info doing in pic16f877a pls can u tell me i am using...
darlington led driver
hello to alll
i am trying build led moving messae 8x40 using pic16f877a and 74hc595+uln2003a
what my question is i want to the rows to be positive and cols be negative
how can i use uln2003a
i will use tr for rows like 2sa18015 and for cols shift register 74hc595 so...
moving message display system
hello blueroomelectronics
sorry u misunderstand that not 16 cols 80 rows actually that is 16 rows 80 columns
16x80
so far i am giving cols from 164 and rows directly from portb its working fine 8x32(8 rows and 32 cols) now i want to expand this with (16x80 16...
moving message display driver
hello blueelectronics
so what u suggest whats the best to use for 16x80 hc154 or hc164
ur suggestion is most welcome if u have any hint i be appreciate
microcontroller based led moving message display
hello blueroomelectronics
thanks for ur nice mathematics
i already made 16x72 led board its ready i solder it takes me 8 hours to do this only part i have to do is programm as some of the members suggest to use 2 ports for 16 rows and some...
diy dot matrix driver
Hello Acex
i don't have th characted table as i am creating in that software actually i am trying to take the character from the system so i am tying to build 16x80 and what the fonts available in the system i want to use them if u have any idea can u tell me
and if u...
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