Q:My breathing lantern flashes, dot matrix is 8*8., and the model is STC89C52 microcontroller

Dot matrix, I think it should be modified by scanning the delay to achieve respiratory effects.

Q:I would like to ask 24 feet of two-color LED dot matrix working principle and circuit diagram

It's about putting 64 LED in 8 rows and 8 columns. One LED has two feet. This one should know. Then, put one foot of each line together. (either the anode, or the negative pole, should be unified), and then draw a line out of the line as a drive line, there are 8 such lines. Then, each of the columns is not connected to the foot, followed by columns, but also lead a line out.

Q:How to determine the cathode and anode of 8 * 8LED dot matrix in PROTEUS

If Tianbuliangjiu replacement of VCC and GND, this measure matrix of rows and columns, a total of yin or Yang pin information etc..

Q:Can a LED8*8 dot matrix display Chinese characters?

Must be able to, but a little deformity, not good-looking, and also have to take their own point. However, the use of dot matrix resources are relatively small, go to the next 51 electronic word acquisition software, so that

Q:Where is the difference between a LED dot matrix screen and an ordinary LED display?

The universal use of the LED dot matrix screen acts as an information screen for displaying text and simple pictures. If the landlord is fully funded, I would recommend that the landlord consider the LED display. After all, it's more reliable.

Q:I have a smile LED dot matrix screen, is the reality of man kind, composed of small pieces of a total of 32 fast to form a dot matrix LED screen is welded on the circuit board, the circuit board at both ends of each of a 16 pin interface is the LED lattice screen should buy what kind of driver to control it? Thank you

Are you the only one?. The 32 dot matrix is a unit board.Depends on how much you 74HC595 chip unit board, 16 monochrome, can do text screen for onbon t-card on the line, to 50 yuan. Software works well.

Q:The dot matrix brightness of single chip computer is inconsistent

Brightness is not enough, you can increase the drive current or change the scanning cycle, 1/8 scan must be much brighter than the 1/16 scan. In scanning mode, the driving current of LED can be increased to 50mA, and usually no problem. In static driving mode, 20mA current comparison insurance is adopted.

Q:Can C51 chips not drive too large LED dot matrix?

Your friend said is not in the I/O expansion under the condition of the microcontroller 51 32 I/O mouth line, so you can use 16 LED array control, 16 column control, display through software to control 16*16 dot matrix LED. This method is more used for teaching materials or examples, used to explain the principle of single chip microcomputer and its application in LED dot matrix.

Q:I used two pieces of 164 to light 8*8LED, dynamic scanning, the bright part of the light, the light should not be bright, please ask the teacher is the circuit problem or program problems? Because how to solve? Thank you

The closing show in each scan before end frame program to scan the next frame to a scanning picture, also is in the implementation of every picture must first perform a show off (an instruction can) to point out on a screen, so as not to there is a shadow.

Q:LED dot matrix with single-chip microcomputer is how to control?

To put it simply, the LED dot array requires two rows of 8 bits, one for the line, one for the column, for example 0 is the selected meaning, then the line is 01111111, and the column is 1011111, then the first row of the second column lights.