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تقدیم به همه علاقه مندان ایران تیکی
Matrix are connected to the shift register 74HC595D through resistors that protect against burnout LED current limiting.
74HC595D chips have 8 triggers to capture the output connected to a matrix of LEDs and 8 shift triggers, which after 14 input data is loaded with 9 output continues to shift further, in the following registers of a chain of 10 pieces.
need to shift the time coming from the processor on all inputs 11 - 74HC595D, after every 80 cycles of the chain is moving to 80 registers trigger all 74HC595D. After this, as the entire line of loaded 80 triggers, served another type of measure is the inputs of all 12 74HC595D, then loaded in a single cycle 8 additional trigger lock data on outputs that are connected to the matrix of LEDs from shear triggers 74HC595D all in one tact with the matrix illuminates a strip of 80 LEDs and light pollution, this is no change of logic levels, even when loaded shift registers.
So get over in turns 8 strings of 80 LEDs with decoder K555ID7 at high speed, which is absolutely not visible to the eye.
This method is very easy and does not reduce the brightness of the marquee due care program the processor to perform other operations not related to the display.
When a blank memory lane at the bottom displays the letters asserting that memory is not, after entering at least one letter. line starts its work sorting the rows. Strongly advise you not to load current low-impedance matrix. because when you turn the empty memory of letters, the matrix is permanently on the bottom line.
To control and data input command table.
After entering letters encoding string stops and shows cognizance text and type a letter with the addition, where the string moves one character, which is very convenient when typing.
Configuring Terminal V1.9 select the connected COM port to select the baud rate (Baud rate) = 1200
- (Data bit) = 8
- (Parity) = None
- (Stop bits) = 1
- (Handshaking) = none
Connect running line cable to the computer.
Press the program button Connect. Enter numbers from the table in front line of the program by clicking on the button Send it after each digit coding letters with the device begins to display the typed text.
Encoding of letters to type in the terminal
تقدیم به همه علاقه مندان ایران تیکی
This unit plays the text on the LED matrix 8 X 80 LEDs, has a memory 128 characters of text, which are loaded from a PC via COM port using Terminal V1.9.
device has all the uppercase and lowercase letters of the Russian alphabet and numbers, and other characters which can be seen in the table below.
MCU running at 20 MHz and manages shift registers 74HC595D, that the logic level 1 lights LED matrix rows and decoder K555ID7 or full analog controls through 74LS138 amplifying transistor 8-mu columns of all matrices.
device has all the uppercase and lowercase letters of the Russian alphabet and numbers, and other characters which can be seen in the table below.
MCU running at 20 MHz and manages shift registers 74HC595D, that the logic level 1 lights LED matrix rows and decoder K555ID7 or full analog controls through 74LS138 amplifying transistor 8-mu columns of all matrices.
Matrix are connected to the shift register 74HC595D through resistors that protect against burnout LED current limiting.
74HC595D chips have 8 triggers to capture the output connected to a matrix of LEDs and 8 shift triggers, which after 14 input data is loaded with 9 output continues to shift further, in the following registers of a chain of 10 pieces.
need to shift the time coming from the processor on all inputs 11 - 74HC595D, after every 80 cycles of the chain is moving to 80 registers trigger all 74HC595D. After this, as the entire line of loaded 80 triggers, served another type of measure is the inputs of all 12 74HC595D, then loaded in a single cycle 8 additional trigger lock data on outputs that are connected to the matrix of LEDs from shear triggers 74HC595D all in one tact with the matrix illuminates a strip of 80 LEDs and light pollution, this is no change of logic levels, even when loaded shift registers.
So get over in turns 8 strings of 80 LEDs with decoder K555ID7 at high speed, which is absolutely not visible to the eye.
This method is very easy and does not reduce the brightness of the marquee due care program the processor to perform other operations not related to the display.
When a blank memory lane at the bottom displays the letters asserting that memory is not, after entering at least one letter. line starts its work sorting the rows. Strongly advise you not to load current low-impedance matrix. because when you turn the empty memory of letters, the matrix is permanently on the bottom line.
To control and data input command table.
After entering letters encoding string stops and shows cognizance text and type a letter with the addition, where the string moves one character, which is very convenient when typing.
Configuring Terminal V1.9 select the connected COM port to select the baud rate (Baud rate) = 1200
- (Data bit) = 8
- (Parity) = None
- (Stop bits) = 1
- (Handshaking) = none
Connect running line cable to the computer.
Press the program button Connect. Enter numbers from the table in front line of the program by clicking on the button Send it after each digit coding letters with the device begins to display the typed text.
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