Circuit Splash

ESP32 distance monitoring system using an ultrasonic sensor and WiFi to send real-time email alerts via Circuit Digest Cloud API when objects cross safety limits.

ESP32 Cam Capture Images and Send Emails in Real-Time with WiFi, OLED Display, and Push Buttons for Secure IoT Photo Alerts.

In this project, we are going to send Temperature and Humidity sensor data to Thingspeak using DHT11. By this method we can monitor our DHT11 sensor’s temperature and humidity data over internet using ThingSpeak IOT server, and we can view the logged data and graph over time on the ThingSpeak dashboard.

We can divide this arduino based thermometer project into three sections - one senses the temperature by using temperature sensor LM 35, second section converts the temperature value into a suitable numbers in Celsius scale which is done by Arduino, and last part of system displays temperature on LCD.

Build an ESP32-CAM email alert system that captures images on motion detection and sends them to your inbox via CircuitDigest Cloud , no SMTP, no subscription required.

Send real-time WhatsApp alerts from ESP32 using WiFi and CircuitDigest Cloud. Trigger notifications from sensors without GSM modules, SIM cards, or complex hardware using the free API from CircuitDigest Cloud

Build a WiFi-based SMS alert system using Seeed Studio XIAO ESP32 and HC-SR04 sensor. Send real-time notifications via free API—no GSM module needed. Complete tutorial with code.

DHT11 is a popular temperature and humidity based digital sensor. There is an upgraded version of the DHT11 temperature and humidity sensor available, which is DHT22 Sensor with higher sensing ranges.

Learn how to send instant WhatsApp notifications from Arduino UNO R4 WiFi using an ultrasonic sensor and CircuitDigest Cloud API without GSM or SIM cards.