The system is controlled wirelessly via Bluetooth with an android app developed using MIT App Inventor. A simple LED dot matrix clock project based on Arduino Nano (ATmega328), also using a DS3231RTC ...

On the other hand, the humidity sensor actively monitors humidity levels. The light-dependent resistor (LDR) detects ambient ... connecting an RFID module with Arduino. This enables communication ...

The pH sensor, CO2 sensor, LDR sensor, LED indicators, and Ultrasonic sensor were attached to the Arduino UNO microcontroller ... data to the cloud via its Wi-Fi connection. The two-channel direct ...

The TSL2561 brightness sensor ... [20]. Arduino UNO R3 is a board that use the ATmega328 microcontroller. It has 14 optical input and output pins thereon. 6 of them are often used for PWM outputs.

Wireless sensor node is a sensor node with a wireless transmitter. It has one or more sensing elements with amplifier and signal conditioning circuit or a digital/smart sensor, a microcontroller unit, ...

This is a module from the same manufacturer as found on the Arduino Nano 33 BLE. Besides wireless connectivity, the Connect has a microphone and a six-axis smart motion sensor with AI capabilities. An ...

The already-large family of Arduino boards is enriched with a new entry, the Arduino Nano RP2040 Connect, integrating ... and the Raspberry Pi. The RGB LED is connected to the radio module and can be ...

2: Block diagram of motion sensor alarm The circuit diagram of the motion sensor alarm is shown in Fig. 3. It consists of a PIR motion sensor (MS1), Arduino Nano (Board1), LM386 audio amp (IC1), and 8 ...