Circuit Diagram and Explanation: In this Arduino Alcohol Detector Shield we have used a MQ3 sensor to detect present alcohol level in the breath. A 16x2 LCD is used for displaying the PPM Value of ...

Arduino is a very popular open-source platform and Arduino UNO is one of the most loved microcontrollers among electronics hobbyists worldwide. It consists of a physical programmable circuit board and ...

Pinout of ATmega32 as used in Arduino board. Thirty two digital pins (D0 to D31) Eight analogue-to-digital pins (A0 to A7); these can be used as digital pins also; Four PWM pins; Other pin details in ...

Circuit and working of the voice controlled home automation system. Circuit diagram of the voice-controlled home automation system is shown in Fig. 3. The circuit consists of Arduino Mega 2560 board ...

The Power Supply schematic includes a 5vdc Sensor regulator. This reduces the load (and heat generated) on the Arduino on-board linear regulator, and also allows more effective input protection by ...

PWM pins work the same way across all Arduino boards, so you don't need to go out of your way to buy a Mega if you already have a board supporting PWM. On the Uno, Nano, and Mini, the PWM pins are ...

5351 based vfo/bfo generator with Arduino Mega Shield and tft/touch screen. The 5351 is on a small add on board. Both tft/ts and additional board piggy ride on the standard Arduino Mega board. PCB ...

Arduino GIGA R1 WiFi board brings the STM32H7 dual-core Cortex-M7/M4 microcontroller found in the Portenta H7 boards to the larger Arduino Mega/Due form factor with up to 76 GPIO pins.. As its name ...

Circuit diagram for IoT based Attendance System. For the final circuit, we will port the existing circuit and replace the FTDI module with Arduino UNO with the GT511C3 FPS and LCD screen connected to ...