Max7219 Dot Matrix Module Diy Kit Scm Control Module For Arduino

商品説明

to display 1-8 bits of data, and a test mode for all LEDs to emit light.
Only need 3 IO port can drive a dot matrix! Dot matrix display without flicker! Support cascade!
Notice:
These are the parts, need to be soldered.
Module parameters:
1. A single module can drive an 8 * 8 common negative lattice
2. Module operating voltage: 5V
3. Module size: 5 x 3.2 x 1.5 cm (L*W*H)
4. With 4 fixed screw holes, aperture 3mm
5. Module with input and output interfaces, support multiple modules cascade
Wiring instructions:
1. The left side of the module is the input port and the right side is the output port.
2. When controlling a single module, only need to connect the input port to the CPU
3. When multiple modules are cascaded, the input of the first module is connected to the CPU, the output is connected to the input of the second module, the output of the second module is connected to the input of the third module, and so on. ..
Take 51 MCU as an example:
VCC 5V
GND GND
DIN P22
CS P21
CLK P20
Precautions:
1. VCC and GND can not be reversed, so as not to burn the chip!
2. The use of 51 single-chip control of the P0 port, you must connect the pull-up resistor, the recommended resistance is 4.7K - 10K
3. Please insert the dot matrix into the round hole, then insert the round hole into the PCB board soldering. The dotted of the word side to your own, the face from left to right pin is 123456. PCB board first foot for the square pad!
4. Electrolytic capacitor long pin for the positive, short pin for the negative; ceramic capacitors without positive and negative.

Package included :
1 x MAX7219 Dot Matrix Module
Complete display: