This LED-based text message display board can be constructed through easily accessible and low-cost parts. This circuit is straightforward and simple to assemble, with CD4017 and a 555 timer IC. Firstly, the circuit will illuminate every letter individually. And then finally blink each of the four letters several multiple times.
The impacts look delightful and eye-catching. The scope of this project work is to structure and develop an electronic advanced showcase framework. In view of light-emitting diodes associated with a pattern that shapes the data. This project is valuable for making alluring messages, introduction quotes, welcome quotes, commercials, and area identifiers.
Hardware Components
The following components are required to make LED-Based Message Display
| S.no | Components | Value | Qty |
|---|---|---|---|
| 1. | IC | NE555 Timer | 1 |
| 2. | Decade Counter Divider IC | CD4017 | 1 |
| 3. | Transistor | BD139 | 4 |
| 4. | Diode | 1N4148 | 12 |
| 5. | Variable Resistor | 100K | 1 |
| 6. | Capacitor | 10µF, 0.01µF | 1, 1 |
| 8. | Resistor | 2.7K, 1K, 290Ω | 1, 1, 3 |
| 11. | Battery | 5-12V | 1 |
| 12. | LEDs | – | 50 |
CD4017 Pinout
For a detailed description of pinout, dimension features, and specifications download the datasheet of CD4017
NE555 Pinout
For a detailed description of pinout, dimension features, and specifications download the datasheet of 555 Timer NE555
LED-Based Message Display Circuit
Working Explanation
The circuit is performing its task by using two ICs. IC1 is a 555-timer working as a positive pulse supplier and IC2 is a CD4017 decade counter that has 10 yield outputs however right now, we will utilize just 6. The IC will enact each yield output on a solitary positive pulse released by the 555 timers. The pulse speed can be balanced with the 100K variable resistor.
The letters on the display board can be made with Veroboard or some other board you have. Utilize a different resistor for each LED by the stock voltage for instance in the event that you are working the circuit with 12V, at that point utilize 470 ohms resistor, for 9V utilize 390 ohms, and for 5V or 6V utilize 270 Ohms resistors.
Applications and Uses
It can be utilized at numerous spots for instance:
- Shops entryways
- Leaving, flags
- Street signs
- Embellishment purposes in-home or vehicles and so forth.
- You can utilize these four letters in order words like GOOD, EXIT, WAIT, WOW! And so on.
