Makers, developers, and hobbyists looking for a way to measure both voltage and current simultaneously may be interested in a new Arduino project published on the official Arduino blog. This project features Karl Kristian Torp’s palm-sized Tiny V/A, a compact and efficient tool designed to simplify the process of measuring electrical parameters.
The Arduino Nano-based project takes input from the power supply via a female barrel jack connector. This supplies the load through a male connector output and also powers the Arduino, an INA219 sensor, and a 0.96” OLED display. The integration of these components ensures that the device is both functional and user-friendly.
Project Inspiration and Design
“There is nothing new about the INA219 high side current sensor. There are plenty of good projects out there that utilize its ability to measure both current and voltage on a load. I originally got inspired by YouTuber Julian Ilett and his ’10 Minute Arduino Project – INA219 Current Sensor’ video. But I wanted a compact meter with a simple interface and a 3D printed case – so I decided to make that myself,” says Karl Kristian Torp.
The Tiny V/A meter stands out due to its compact design and ease of use. The 3D printed case not only protects the internal components but also adds to the aesthetic appeal of the device. The small size makes it highly portable, allowing users to carry it around easily for various applications.
Functionality and Features
A single capacitive touch button allows you to easily navigate Tiny V/A’s menu and change settings like sensor range and refresh rate. This touch interface simplifies the user experience, making it accessible even for those who may not be very familiar with electronics. Additionally, it can even be powered over USB as needed for an expanded voltage range, providing flexibility in various scenarios.
The INA219 sensor is a key component of this project. It is a high-side current sensor that can measure both current and voltage, making it ideal for applications where monitoring power consumption is crucial. The sensor’s high accuracy and ability to handle a wide range of voltages and currents make it a versatile choice for many projects.
The 0.96” OLED display provides a clear and concise readout of the measurements, ensuring that users can easily interpret the data. The display’s compact size fits well with the overall design of the Tiny V/A meter, maintaining the device’s portability.
Applications and Use Cases
The Tiny V/A meter can be used in a variety of applications. For instance, it can be employed in educational settings to teach students about electrical measurements and circuit design. Its simplicity and ease of use make it an excellent tool for beginners who are just starting to explore the world of electronics.
In addition, hobbyists and developers can use the Tiny V/A meter to monitor the power consumption of their projects. Whether it’s a small DIY project or a more complex development, having accurate measurements of voltage and current can help in optimizing performance and ensuring the longevity of the components.
Moreover, the device can be used in troubleshooting and diagnostics. By measuring the voltage and current in different parts of a circuit, users can identify potential issues and make necessary adjustments to improve functionality.
In conclusion, Karl Kristian Torp’s Tiny V/A meter is a valuable tool for anyone involved in electronics. Its compact design, ease of use, and accurate measurements make it a versatile addition to any toolkit. Whether you’re a student, hobbyist, or professional developer, the Tiny V/A meter can help you achieve your project goals with greater precision and efficiency.
Source: AB : Instructables
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