Design with Adafruit 7 Segment FeatherWing - White in Cirkit DesignerThe Adafruit 7 Segment FeatherWing - White is an electronic display module that features a seven-segment LED configuration with bright white digits. This component is designed to be compatible with the Feather ecosystem, allowing for easy stacking and use with various Feather boards. It is commonly used for displaying numerical data such as time, temperature, counters, and other simple alphanumeric characters in DIY projects, wearables, and portable devices.
This circuit consists of an Arduino UNO connected to an Adafruit OLED FeatherWing display via I2C communication (SDA and SCL lines). The Arduino is powered through a Vcc source and provides 3.3V and GND connections to the OLED display. The Arduino runs a program to display 'Hello, World!' on the OLED screen.
Open Project in Cirkit Designer
This circuit features an Adafruit HUZZAH32 ESP32 Feather board as the central microcontroller, which is connected to an Adafruit Quad AlphaNumeric Featherwing display and an Adafruit ADXL343 accelerometer via I2C communication (SCL and SDA lines). The ESP32 controls a vibration motor connected to one of its GPIO pins (A5_IO4) and shares a common power supply (3.3V) and ground (GND) with the other components. The purpose of this circuit is likely to read acceleration data, display information on the alphanumeric display, and provide haptic feedback through the vibration motor.
Open Project in Cirkit Designer
This circuit features an Arduino UNO microcontroller connected to two seven-segment displays, a pushbutton, a red LED with a 330-ohm resistor, and an AHT10 temperature and humidity sensor. The Arduino controls the segments of the displays via its digital pins and reads the pushbutton state. The LED is used as an indicator, and the AHT10 sensor interfaces with the Arduino over I2C to provide environmental data.
Open Project in Cirkit Designer
This circuit features an Arduino Nano microcontroller interfaced with a seven-segment display and a pushbutton. The Arduino controls the segments of the display to show numbers or characters, while the pushbutton can be used to trigger actions or change the display content.
Open Project in Cirkit Designer| Pin | Description |
|---|---|
| GND | Ground connection |
| 3V | 3.3V power supply |
| SDA | I2C data line |
| SCL | I2C clock line |
| RST | Reset pin (optional) |
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_LEDBackpack.h>
Adafruit_7segment matrix = Adafruit_7segment();
void setup() {
matrix.begin(0x70); // Initialize the display with its I2C address
}
void loop() {
matrix.print(1234, DEC); // Display the number 1234
matrix.writeDisplay(); // Send the data to the display
delay(500); // Wait for half a second
// Display a hexadecimal number
matrix.print(0xBEEF, HEX);
matrix.writeDisplay();
delay(500);
}
Q: Can I use this display with boards other than Feather? A: Yes, as long as the board supports I2C communication and operates within the voltage range.
Q: How can I control multiple displays at once? A: Use an I2C multiplexer to communicate with multiple displays that have the same fixed I2C address.
Q: Is it possible to display letters as well as numbers? A: The display can show some basic alphanumeric characters that resemble numbers (e.g., 'A' can be displayed as '4').
Q: Can I adjust the brightness of the display? A: Yes, the Adafruit LED Backpack library provides functions to adjust the brightness programmatically.