In this tutorial, we will learn how to build an android app that will control the outputs of ESP32 over WiFi and internet using an Android App. We will control the output GPIO pins of the ESP32 module by toggling the two LEDs connected with the GPIO pins of the module. This android app will … Read more
In this tutorial, we will learn how to build an android app with a slider that will enable us to control the brightness of an LED connected with Arduino. The slider will be moved to set the slider value. In response, this slider value will set the duty cycle of the PWM signal generated by … Read more
In this user guide, we will introduce you to Microsoft Azure IoT central and send DHT22 sensor readings to this IoT platform with ESP8266 NodeMCU. Through Azure IoT core, we’ll show you how to publish sensor readings to the dashboard using Arduino IDE. The sensor readings will be displayed in a dashboard. Most importantly, you … Read more
In this guide, we will introduce you to Arduino watchdog timer. The ATmega328P chip is used to operate the Arduino UNO board. The Watchdog Timer on the ATmega328P is a crucial tool for helping the system recover from instances where the system hangs or freezes due to faults in the code or conditions caused by … Read more
In this short guide, we will discuss Arduino’s analog comparator. This will include a brief introduction to the analog comparator including its registers. Then, we will demonstrate these concepts with the help of an Arduino sketch that toggles an LED. Recommended Components The following components are used in this project or are helpful for building … Read more
In this user guide, we will learn to build an RGB LED Control Android App with MIT App Inventor and control it using Arduino. This Andriod app will allow us to change the color of an RGB LED by setting it from a color picker featured on the application screen. The transmission of RGB values … Read more
In this user guide, we will learn to build an Android App using MIT App Inventor and display temperature readings acquired from DS18B20 sensor with Arduino. The transmission of sensor data will be through the HC-05 Bluetooth module. Our Android application will display sensor readings on our smartphones. The sensor readings could be accessed anywhere … Read more
In this ESP32 guide, we will show you how to build a pulse oximeter web server using MAX30100 pulse oximeter and heart rate sensor. This sensor is used to measure heartbeat/pulse rate in BPM and blood oxygen concentration (SpO2) in percentage. The web server will display the current beat per minute (BPM) and blood oxygen … Read more
In this ESP32/ESP8266 compatible guide, we will introduce you to InfluxDB and show you how to send DS18B20 sensor readings to the InfluxDB time-series database. We will show you how to create a database bucket and send ESP32/ESP8266 sensor data to the InfluxDB database. Moreover, we will also show you how to build your dashboard … Read more
In this ESP32/ESP8266 compatible guide, we will introduce you to InfluxDB and show you how to send DHT11/DHT22 sensor readings to the InfluxDB time-series database. We will show you how to create a database bucket and send ESP32/ESP8266 sensor data to the InfluxDB database. Moreover, we will also show you how to build your dashboard … Read more