A potentiometer is a simple knob that provides a variable resistance, which we can read into the Arduino board as an analog value. They can be attuned from zero ohms to whatever maximum resistance that is specific to it. For example, a potentiometer of 10 kΩ can be adjusted from 0 Ω to its maximum of 10 kΩ.
Controlling devices over a distance opens lots of possibilities. Our Arduino roadmap contains many projects that must be controlled remotely and sometimes on a long-distance. Of course, it can be done with a PC but our experience has shown that it becomes complicated when you need long way, portable and rapid communications. Our solution was designing a multi-functional remote controller, we have called it AirControl. Aware of the needs it will have 4 push buttons, 2 switch buttons, 2 potentiometers and two analog modules. Additionally, each analog joystick module has integrated push button.
In the world of do-it-yourself (DIY) projects, few activities match the practicality of constructing your own Arduino-powered automatic watering system. Imagine a setup where technology integrates effortlessly with nature, allowing you to take control of your plant care routine. We'll break down the fundamental components of this project, highlighting the vital role of the DS1302 timekeeping module and Arduino-compatible pumps. Get ready for a hands-on approach that not only enhances your technical skills but also transforms the way you care for your plants, whether they are in the corners of your home or under the open sky.
As we transition into the practical implementation of our Arduino-powered automatic watering system, the focus shifts from theory to the tangible. This section of the guide will meticulously guide you through the steps of physically mounting the components, integrating sensors, and establishing the necessary connections between modules. It's an opportunity to transform conceptual understanding into hands-on reality. Prepare to immerse yourself in the practical aspects of this project, where we navigate through the nuances of placing each module and executing the precise wiring required to bring your plants care system to life.
Having outlined the concept of automated watering and successfully assembled the physical components, our attention now turns to the real wizardry - the code. This article explores the intricate lines of Arduino code that transform theory into reality, breathing life into our DIY plant care project. As we step into the heart of our automated watering system, let's unravel the details that make our green vision a reality.
The KY-023 is an easy-to-use analog joystick. The joystick uses a biaxial potentiometer to control the X and Y axis. It also has an integrated push button. In this tutorial, it is shown how to connect the KY-023 joystick with the Arduino and how to use it.
Wireless communication implies having a transmitter, in our case the joystick, and a receiver. We must build a simple circuit with NRF24L01 wiring that will act as listener for our joystick. The NRF24L01 module strictly needs 3.3V but the logic pins are 5V tolerant. That why we recommend to use the NRF24L01 adapter which acts as regulator, keep the voltage stable, apply filtering and reduce noises.
Based on the solution of designing multi-functional remote controller and being aware of the needs we started building the joystick. It will have 4 push buttons, 2 switch buttons, 2 potentiometers and two analog modules. And, additional 2 push buttons integrated on the analog joystick module.
The physical part of the controller is finished but what about the brain? Once more, our decision falls on Arduino Nano. It perfectly fits by size providing all the necessary functionality. For programming a Nano board we need a USB to serial interface which can be hooked up to the programing header located on the top side of our controller.
Based on the solution of designing multi-functional remote controller and being aware of the needs we started building the joystick. The cover with controls is ready for use but we miss the most important part: the microcontroller. Once more, our decision falls on Arduino Nano. It perfectly fits by size providing all the necessary functionality.
