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In this project, the Arduino Uno is configured as a square wave generator with user-selectable control of the frequency and duty cycle. The operating range of the system is up to 10kHz. The desired frequency and duty cycle of...
With increased technological advancements, switches require updating with current times. To avoid the risk of contracting COVID-19, it has become important to not touch surfaces of buttons and keys that have been frequently used by other people. This calls...
An accelerometer, which is an electromechanical device, can be used for various applications like tilt detection, obstacle detection, motion inputs, earthquake sensing, etc. Tilt detection is a simple application of an accelerometer where a change in angular position of...
This is a simple function generator that works in the audio frequency range. It can be useful for amplifier testing, experimentation in digital signal processing (DSP) and electronics labs. The author’s prototype is shown in Fig. 1. Circuit diagram of...
We have seen different types of human interface devices (HID), such as mouse and keyboard. In older versions of the mouse, optical sensors were used to detect movement relative to a surface, thus they required a smooth surface to...
This Device Controller project based on an 8-bit ATmega328P microcontroller (MCU) can control up to eight devices connected to its electromagnetic relays. The article also describes how to program an MCU to accept infrared (IR) remote control signals for...
This GPS-based project displays analogue clock and room temperature on a TFT display. GPS time is a precise time standard that is related to Coordinated Universal Time (UTC). The displays of most electronic hobby projects are based on LCD,...
This is a one-time password (OTP) based smart locking system using Arduino and Bluetooth. It can generate a new password every time you try to unlock it, which gives you extra security. A key-based locking system has now become outdated...
Arduino's latest app release can greatly benefit IoT project developers to control applications through their mobile devices Setting up a dashboard and data visualisation is now simple To help users develop their IoT solutions online, Arduino has launched the...
This article describes the procedure to set up Arduino as a slave device, which gets all control signals from Raspberry Pi running a Python program. The program presented here provides simple steps to interface Raspberry Pi and Arduino. Arduino...