Making Tutorial of Rotating LED Display Screen

Step 1: components and partsArduino NanoLED red 7

Making Tutorial of Rotating LED Display Screen 1

Resistance 330 ohms 8SWITCH DPDT 1Battery 9 V 1

Battery holder 1Infrared LEDphotodiode

Resistance 10KPCB copper clad foil / zero PCBPin

Power pin motor connectorStep 2: how to rotate the LED display"POV display" or "rotating LED display" is just an eye deception. Our eyes can't distinguish very fast movement. In this "POV display", the LED light band rotates very fast (more than 500 rpm), and the LED pattern is composed of letters, so we can see words or letters.

Making Tutorial of Rotating LED Display Screen 2

In GIF pictures, you can see and understand how the rotating LED display works. Suppose we want to display the letter "a" on the POV display screen. As shown in the figure, it is a GIF image. Some LEDs in the first column emit light, and the LEDs emit light according to the letter. After a delay of several milliseconds, the second column LED lights up and the speed of the LED is very fast, so we can't distinguish the changes, we can only see some letters.In the rotating LED display, the Arduino nano is used as a control unit. Arduino is a microcontroller board that controls LEDs and makes flashing patterns. A pair of IR LEDs (infrared LEDs) and Pd (photodiodes) are used to determine the starting point of rotation.When the circuit of POV display crosses the white strip, the photodiode detects it and starts the LED strip in alphabetical order. Each time it forms the same pattern so that we can clearly see the letters.

Step 3: circuit for rotating the LED displayEagle BRD file: please visit our websitehttp://clgproject.blogspot.in/2017/11/rotating-leddisplay-is-amazing- and-very.html

The circuit of POV display is very simple, but we need to make it as compact as possible because it runs at a high speed (greater than 500 rpm) and the motor cannot handle heavy and large circuits, so I designed the circuit on Eagle CAD software, which will make the circuit very compact. If you are good at PCB etching, you can make your own PCB. If you want to learn PCB etching, please click here. If you intend to use the circuit given below for PCB, or you can buy it from us. If you are interested, please contact us. If you are not familiar with PCB etching Please rest assured that you can use the circuit given below and make the circuit on the zero PCB.

In the POV display circuit, seven LEDs are connected to Arduino pins (D6 to D12) through a resistance of 330 ohms. The photodiode is connected to VCC and GND through a 10k ohm resistance, and the connection point of the photodiode and the resistance is connected to the A7 pin of Arduino. The IR LED is connected to VCC and GND through a resistance of 330 ohms.Step 4: CodeClick here to get the code

get in touch with us
recommended articles
FAQ
Let's Introduce Several Tips for Energy Saving of LED Display Screen in Detail
With the rapid development of society, "energy saving" has become one of the topics that people pay more and more attention to, and the LED industry is no exception. The survey found that led energy-saving products are widely welcomed by the public, such as LED energy-saving lamps, and LED displays belonging to the LED industry should also keep pace with the times, respond to the national call and promote energy-saving and environmental protection products. As we all know, LED display may not achieve the ideal effect in energy saving because of its high brightness, but this does not mean that it must be a high energy consumption product. So how can led display achieve energy saving? Maipu Guangcai LED display manufacturer introduces in detail several tips for energy saving of LED display, and hopes to adopt them.1. The LED display screen made of environmental protection materials can achieve the purpose of waterproof, dustproof and ultraviolet radiation without glue filling after special processing technology. It has less consumables than the products produced by general process and is more environmentally friendly.2. The brightness adjustment device is designed. The brightness of the application occasion is different under different weather conditions. In order to make the LED display screen achieve the best display effect, which is neither bright nor dark, the LED display screen is specially designed with a brightness 256 level adjustment device and the function of automatically adjusting the brightness according to the surrounding environment, It can ensure that the LED display screen can present a good display effect for the audience under various external brightness environments.3. Constant current noise reduction technology, the LED display driver chip adopts the international advanced LED display special chip system, which is a leading manufacturer in the field of full-color LED display. Combined with the characteristics of the chip, the constant current noise reduction technology is studied and formed to ensure that the influence of other noise source factors such as power supply on LED electronic display screen is reduced to a very low level. Some drive ICs can also save the original 5V voltage to 4.2V to achieve the function of energy saving.4. The strong convection heat removal system makes the heat dissipation system stable. Maipu Guangcai LED display screen will release more heat after working for a long time. If the heat is not released in time, it will cause a certain degree of damage to the screen body and affect the normal use of the screen. In order to ensure the normal operation of the display screen in a stable environment, it is necessary to strengthen the heat dissipation system of the LED display screen.5. Power supply, the realization of LED energy-saving display screen mainly starts from the power supply. The existing LED display screen directly adopts half bridge or full bridge high-efficiency switching power supply, coupled with synchronous rectification, with remarkable energy-saving effect. Reduce the power supply voltage as much as possible under the condition of constant current to the driving IC, and achieve better energy-saving effect by supplying power separately through each tube core of red, green and blue.If the selection of LED display screen can start from five aspects: material selection, brightness adjustment, noise reduction treatment, heat dissipation improvement and power supply, then led display screen can also make its own efforts for energy conservation and environmental protection.fqj
Fault Detection and Maintenance of LED Display Screen
How to Solve the Problem of Frequent Tripping of the Total Leakage Protector of LED Display Screen
How to Solve the Fault of LED Display Screen
Analysis of Six Key Technologies on How to Ensure the Safety Performance of LED Display Screen
How to Use AT89C51 Single Chip Microcomputer to Control the Circuit Design of LED Display Screen
Four Technologies to Solve the Problem of LED Display Screen
Design Requirements of LED Display Screen
Research and Discussion on Common Problems of LED Display Screen
On the Application Field and Classification of LED Display Screen
related searches
Let's Introduce Several Tips for Energy Saving of LED Display Screen in Detail
Fault Detection and Maintenance of LED Display Screen
How to Solve the Problem of Frequent Tripping of the Total Leakage Protector of LED Display Screen
How to Solve the Fault of LED Display Screen
Analysis of Six Key Technologies on How to Ensure the Safety Performance of LED Display Screen
How to Use AT89C51 Single Chip Microcomputer to Control the Circuit Design of LED Display Screen
Four Technologies to Solve the Problem of LED Display Screen
Design Requirements of LED Display Screen
Research and Discussion on Common Problems of LED Display Screen
Contact US

    Bao’an District  Shenzhen City, China

     +86 189 3806 5764

NEWSLETTER SUBSCRIBE
no data
Copyright © 2021 CrowBerry

   

chat online
NEED HELP? WE'RE HERE!