Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — either via Bluetooth or Wi-Fi.

I simulated the circuit in TINA-TI, applied a sinusoidal input signal, and plotted input-output waveforms. Finally, I compared the theoretical and simulated gain values. Problem 2: Relay Module Design ...

In this assignment, I designed and analyzed two circuits: a BJT amplifier and a relay module. Problem 1: BJT Amplifier Design I determined the assigned BJT BC548 based on my student ID. I referred to ...

Circuit Diagram. The Circuit Diagram for ESP32-CAM Face Recognition Door Lock System is given below: The circuit above combined with an FTDI board, Relay Module, and Solenoid Lock. The FTDI board is ...