The microcontroller on the Arduino Nano board is ATmega328p. if you don’t have an Arduino Nano, you can also use Arduino Uno or Arduino Maga. Arduino Nano. A Piezo Buzzer is an audio signaling device ...

Our schematic consists on 3 elements which are: Photoresistor (LDR), Piezo Buzzer, 1 – 10 kΩ. The LDR can be connected any way you want because doesn’t have polarity. For resistance you can use from 1 ...

The higher note that the buzzers can play is a B4: the exception is the first buzzer, which takes advantage of the Arduino's internal timer. The player is made with buzzers. A buzzer makes a clicking ...

I demonstrate how to build an RFID-based access control system using Arduino! This project integrates an RFID reader (RC522), servo motor, 16x2 I2C LCD, three LEDs (Red, Yellow, Green), and a 2-pin ...

Understanding the Tone() function of Arduino:. Before we can understand how a tone works we should know how a Piezo buzzer works. We might have learnt about Piezo crystals in our school, it is nothing ...

Our Smart Home Using Arduino Uno R4 WiFi project is designed for home safety and convenience, integrating temperature, humidity, light, and gas monitoring. Using sensors like DHT11/DHT22, LDR, and ...

Active Buzzers: Active buzzers are called ‘active’ because they can produce sound directly when connected to a battery. If we connect the positive and negative terminals properly to the battery, It ...

The circuit is built around Arduino Uno board (Board1), current sensor IC ACS712 (IC1), 16×2 LCD (LCD1), npn transistor BC547 (T1), piezo buzzer (PZ1) and a few other components. Fig. 1: Circuit ...