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 ...

This arduino UNO project introduces a Sun-tracking system project using an Arduino Uno, a servo motor, and LDRs to optimize solar panel efficiency. Hardware components, circuit connections, and ...

Fig. 1: Pin details of ATmega32 Fig. 2: Author’s prototype on the board Pinout of ATmega32 as used in Arduino board Thirty two digital pins (D0 to D31) Eight analogue-to-digital pins (A0 to A7); these ...

Circuit diagram of the voice-controlled home automation system is shown in Fig. 3. The circuit consists of Arduino Mega 2560 board (Board1) for comparing the input string received through Bluetooth ...

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 ...

If you've got an Arduino of any variety, you might have noticed some of the pins on the board have a tilde mark or PWM printed next to them. What is PWM?

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 ...

Testing the complete IoT based Arduino Attendance System Finally it’s time to get the system into action, upload the Arduino code to the UNO board and connect it with ESP which already has our code ...