Summary: This setup and code are designed to monitor power status and use the SIM800H module to send SMS alerts in case of a power outage or restoration. The hardware connections are straightforward, ...

The hardware is consists of an Arduino microcontroller (here an Arduino Uno R3) and a pre-wired soil moisture sensor module. The soil moisture sensor module , built around the LM393 comparator, gives ...

A Single In-line Memory Module (SIMM) is a type of memory module containing Random Access Memory (RAM) which was used in computers from the early 1980s to the late 1990s (think 386, 486, Macintoshs… ...

This expansion module harnesses the ATmega32u4 microcontroller, ensuring software compatibility with the Arduino UNO environment. While the physical layout of the module differs from standard Arduino ...

SIM800L GSM Module Connections (Requires Level Shifting) The SIM800L module needs special attention because it operates at 3.3V logic levels while Arduino uses 5V. We need a voltage divider circuit to ...

Components Required 1. Arduino Uno – x2 2. nRF24L01 – x2 3. 3.3V Adapter Board for nRF24L01 Wireless Module – x2 4. DHT11 5. OLED display 6. Jumper wires 7. Breadboard – x2 Overview of nRF24L01 Module ...

Arduino UNO R4 Minima and WiFi boards powered by a Renesas RA4M1 32-bit Arm Cortex-M4F microcontroller and equipped with an optional ESP32-S3 WiFI & BLE module are now available for respectively $20 ...