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Component Documentation

How to Use OpenSegment Serial Display - 20mm (Blue): Examples, Pinouts, and Specs

Image of OpenSegment Serial Display - 20mm (Blue)

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Introduction

The OpenSegment Serial Display is a vibrant and compact module featuring four 7-segment blue LED displays. This 20mm display is designed for readability and ease of use, making it an excellent choice for projects requiring numerical output, such as clocks, counters, and readouts for sensors. It is controlled via a serial interface, which simplifies the connection and programming.

Explore Projects Built with OpenSegment Serial Display - 20mm (Blue)

Arduino UNO Controlled LED and 7-Segment Display Circuit

Image of Beunen aan water: A project utilizing OpenSegment Serial Display - 20mm (Blue) in a practical application

This circuit features an Arduino UNO controlling multiple blue LEDs and a 4-digit 7-segment display. The LEDs are configured with current-limiting resistors, and the display is interfaced with the Arduino for potential numeric or character output. The provided code for the Arduino is a template without specific functionality.

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ESP32-Powered OLED Display Interface

Image of Display: A project utilizing OpenSegment Serial Display - 20mm (Blue) in a practical application

This circuit connects an ESP32 microcontroller to a 0.96" OLED display via I2C communication protocol. The ESP32's pins D22 and D21 are used as the serial clock (SCK) and serial data (SDA) lines, respectively, to interface with the OLED's corresponding SCK and SDA pins. The OLED is powered by the 3.3V output from the ESP32, and both devices share a common ground. The embedded code initializes the display and prints 'Hello, ESP32!' on the screen.

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Arduino Nano 33 BLE Battery-Powered Display Interface

Image of senior design 1: A project utilizing OpenSegment Serial Display - 20mm (Blue) in a practical application

This circuit features a Nano 33 BLE microcontroller interfaced with a TM1637 4-digit 7-segment display for information output, powered by a 3.7V battery managed by a TP4056 charging module. The microcontroller communicates with the display to present data, while the TP4056 ensures the battery is charged safely and provides power to the system.

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Arduino UNO Based Ultrasonic Distance Measurement with TM1637 Display

Image of UNDERWATER SENSOR: A project utilizing OpenSegment Serial Display - 20mm (Blue) in a practical application

This circuit is designed to measure distance using the JSN-SR04T ultrasonic sensor and display the measured value on a TM1637 4-digit 7-segment display. The Arduino UNO serves as the central controller, running code to operate the sensor, calculate the distance, and update the display. The sensor's TRIG and ECHO pins are connected to digital pins D12 and D11 of the Arduino, respectively, while the display's CLK and DIO pins are connected to digital pins D3 and D4, with both the sensor and display sharing power and ground connections with the Arduino.

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Explore Projects Built with OpenSegment Serial Display - 20mm (Blue)

Image of Beunen aan water: A project utilizing OpenSegment Serial Display - 20mm (Blue) in a practical application

Arduino UNO Controlled LED and 7-Segment Display Circuit

This circuit features an Arduino UNO controlling multiple blue LEDs and a 4-digit 7-segment display. The LEDs are configured with current-limiting resistors, and the display is interfaced with the Arduino for potential numeric or character output. The provided code for the Arduino is a template without specific functionality.

Open Project in Cirkit Designer

Image of Display: A project utilizing OpenSegment Serial Display - 20mm (Blue) in a practical application

ESP32-Powered OLED Display Interface

This circuit connects an ESP32 microcontroller to a 0.96" OLED display via I2C communication protocol. The ESP32's pins D22 and D21 are used as the serial clock (SCK) and serial data (SDA) lines, respectively, to interface with the OLED's corresponding SCK and SDA pins. The OLED is powered by the 3.3V output from the ESP32, and both devices share a common ground. The embedded code initializes the display and prints 'Hello, ESP32!' on the screen.

Open Project in Cirkit Designer

Image of senior design 1: A project utilizing OpenSegment Serial Display - 20mm (Blue) in a practical application

Arduino Nano 33 BLE Battery-Powered Display Interface

This circuit features a Nano 33 BLE microcontroller interfaced with a TM1637 4-digit 7-segment display for information output, powered by a 3.7V battery managed by a TP4056 charging module. The microcontroller communicates with the display to present data, while the TP4056 ensures the battery is charged safely and provides power to the system.

Open Project in Cirkit Designer

Image of UNDERWATER SENSOR: A project utilizing OpenSegment Serial Display - 20mm (Blue) in a practical application

Arduino UNO Based Ultrasonic Distance Measurement with TM1637 Display

This circuit is designed to measure distance using the JSN-SR04T ultrasonic sensor and display the measured value on a TM1637 4-digit 7-segment display. The Arduino UNO serves as the central controller, running code to operate the sensor, calculate the distance, and update the display. The sensor's TRIG and ECHO pins are connected to digital pins D12 and D11 of the Arduino, respectively, while the display's CLK and DIO pins are connected to digital pins D3 and D4, with both the sensor and display sharing power and ground connections with the Arduino.

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Common Applications and Use Cases

Digital clocks and timers
Counter displays for events or devices
Temperature or other sensor readouts
User interfaces for settings and menus
Scoreboards for games and sports

Technical Specifications

Key Technical Details

Display Color: Blue
Number of Digits: 4
Digit Height: 20mm
Operating Voltage: 3.3V to 7V
Maximum Current: 160mA at 5V
Communication: Serial (TTL)

Pin Configuration and Descriptions

Pin Number	Name	Description
1	VCC	Power supply (3.3V to 7V)
2	GND	Ground connection
3	RX	Serial receive pin
4	TX	Serial transmit pin (not used)

Usage Instructions

How to Use the Component in a Circuit

Power Connection: Connect the VCC pin to a 3.3V to 7V power supply and the GND pin to the ground.
Serial Connection: Connect the RX pin to the transmitting pin (TX) of your microcontroller.
Initialization: Power on the display and send initialization commands via the serial interface to set up the display settings.

Important Considerations and Best Practices

Ensure that the power supply does not exceed the maximum voltage rating.
Use a current-limiting resistor if connecting to a power supply greater than 5V.
Avoid exposing the display to direct sunlight to prevent overheating and damage.
When sending serial data, adhere to the correct baud rate and communication protocol as specified by the manufacturer.

Example Code for Arduino UNO

#include <SoftwareSerial.h>

// RX pin is not used for this display, hence we set it to -1.
// TX pin is the pin connected to the RX pin of the display.
SoftwareSerial openSegmentSerial(-1, 2); // RX, TX

void setup() {
  // Start serial communication at 9600 baud rate.
  openSegmentSerial.begin(9600);
}

void loop() {
  // Send a number to the display.
  openSegmentSerial.print("1234");

  // Add a delay between updates.
  delay(1000);
}

Troubleshooting and FAQs

Common Issues

Display Not Lighting Up: Ensure that the power connections are correct and the power supply is within the specified voltage range.
Garbled or No Output: Check the serial connection and ensure the baud rate matches the display's requirements.
Partial Display: This could be due to insufficient power. Verify that the current supply is adequate.

Solutions and Tips for Troubleshooting

Double-check wiring, especially the VCC and GND connections.
Use a multimeter to verify that the correct voltage is reaching the display.
If using a breadboard, ensure that all connections are secure and there are no loose wires.
For serial communication issues, try using a different baud rate or check for any serial configuration mismatches.

FAQs

Q: Can I control the brightness of the display? A: Yes, the brightness can typically be controlled through serial commands. Refer to the manufacturer's command set for details.

Q: Is it possible to display letters as well as numbers? A: The 7-segment display is primarily designed for numbers, but certain letters can be approximated. Check the character set supported by the display.

Q: How do I connect multiple OpenSegment displays together? A: Some models support daisy-chaining. Refer to the specific model's documentation for instructions on connecting multiple units.

Q: Can I use this display with a 3.3V system? A: Yes, the display operates within a 3.3V to 7V range, making it compatible with both 3.3V and 5V systems.