Design with Qwiic Cable - Breadboard Jumper (4-pin) in Cirkit DesignerThe Qwiic Cable - Breadboard Jumper (4-pin) is an essential component designed to facilitate seamless and solderless connections between Qwiic-enabled devices and a standard breadboard. This cable is particularly useful for rapid prototyping, educational purposes, and hobbyist projects where ease of use and flexibility are paramount. Common applications include interfacing sensors, actuators, and modules with microcontrollers such as the Arduino UNO in a plug-and-play fashion.
This circuit consists of four 5-pin connectors, where two of the connectors are fully interconnected pin-to-pin. The purpose of this setup could be to create a parallel connection between the two 5-pin connectors, possibly for signal distribution or redundancy.
Open Project in Cirkit Designer
This circuit interfaces a 20x4 I2C LCD display with a power source and an I2C communication bus. The LCD is powered by a 4.2V supply from a connector and communicates via I2C through another connector, which provides the SCL and SDA lines as well as ground.
Open Project in Cirkit Designer
This circuit consists of a 40-pin connector interfacing with four pushbuttons and a UBS power supply. The pushbuttons are used as inputs to the connector, which then relays the signals to other components or systems. The UBS power supply provides the necessary 24V power to the pushbuttons and the common ground for the circuit.
Open Project in Cirkit Designer
This circuit features an ESP32 microcontroller connected to a photocell (LDR) through a voltage divider with a fixed resistor to measure light intensity. The ESP32 reads the analog voltage corresponding to the light level detected by the LDR and outputs the reading to the serial monitor. The Qwiic cables provide power and ground connections to the components and facilitate communication between the ESP32 and other potential I2C devices.
Open Project in Cirkit DesignerThe Qwiic Cable - Breadboard Jumper is characterized by the following technical specifications:
| Pin Number | Qwiic Connector | Breadboard Jumper Color | Description |
|---|---|---|---|
| 1 | SDA | Blue | Serial Data Line |
| 2 | SCL | Yellow | Serial Clock Line |
| 3 | VCC | Red | Power Supply Voltage |
| 4 | GND | Black | Ground |
Q: Can I use the Qwiic Cable with a 5V system? A: Yes, the Qwiic system is typically 3.3V, but the cables are usually 5V tolerant. However, always check the specifications of your specific Qwiic-enabled device.
Q: How do I extend the length of my Qwiic connection? A: You can use multiple Qwiic cables connected in series, but be aware that extending the length too much may affect I2C communication quality.
Q: Is it possible to connect multiple Qwiic devices using one cable? A: No, the Qwiic Cable - Breadboard Jumper is designed for a one-to-one connection. For multiple devices, use a Qwiic hub or daisy-chain compatible devices.
Below is an example of how to initialize an I2C communication with a Qwiic-enabled device using an Arduino UNO. This is a generic setup and may vary depending on the specific device.
#include <Wire.h>
void setup() {
Wire.begin(); // Join the I2C bus as a master
Serial.begin(9600); // Start serial communication at 9600 baud rate
}
void loop() {
// Your device-specific communication code here
}
Remember to consult the datasheet of your specific Qwiic-enabled device for the correct I2C addresses and commands.