Design with OpenSegment Serial Display - 20mm (Blue) in Cirkit DesignerThe OpenSegment Serial Display is a versatile and bright single-digit 7-segment display module that is designed for easy integration into a wide range of electronic projects. This display operates via serial communication, allowing users to control it using simple serial commands. The blue 20mm display is highly visible and is commonly used in applications such as counters, timers, and numeric indicators.
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
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
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
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.
Open Project in Cirkit Designer| Pin Number | Name | Description |
|---|---|---|
| 1 | VCC | Power supply (3.3V to 5V) |
| 2 | GND | Ground connection |
| 3 | RX | Serial receive pin |
| 4 | TX | Serial transmit pin (not used) |
#include <SoftwareSerial.h>
// RX pin is not used, set to -1. TX pin is connected to OpenSegment's RX pin.
SoftwareSerial openSegmentSerial(-1, 2); // RX, TX
void setup() {
// Start serial communication with the OpenSegment display at 9600 bps
openSegmentSerial.begin(9600);
}
void loop() {
// Send a numeric value to the display
openSegmentSerial.print(5);
delay(1000); // Wait for 1 second
// Send a hexadecimal character to the display
openSegmentSerial.print("A");
delay(1000); // Wait for 1 second
}
Q: Can I daisy-chain multiple OpenSegment displays? A: Yes, multiple displays can be daisy-chained, but each must be individually addressed.
Q: How do I change the baud rate? A: The baud rate can be changed using a specific serial command as per the display's datasheet.
Q: Is it possible to control the brightness of the display? A: Yes, the brightness can typically be controlled via serial commands.
Q: Can I display letters as well as numbers? A: The display supports a limited character set, including numbers 0-9 and hexadecimal characters A-F.
For further assistance, consult the manufacturer's datasheet and technical support resources.