Tutorials

Using the R503 Finger Print Sensor with K216 Controller

This article will discuss how to control the R503 fingerprint sensor with K216 controller and a remote. What is the R503 Fingerprint Sensor? R503 is an industrial grade fingerprint sensor, this sensor reads fingerprints when placed on the face of the sensor and stores them. When a stored fingerprint is scanned again, it can be […]

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Tutorials

Using the MAX30102 Pulse Oximeter Sensor: Part 2 – Getting Accurate Readings

In the last part of this article, we explained how to use the MAX30102 Pulse Oximeter Sensor with the Arduino. You can read it here. In this article, we continue from the previous article and how to improve the readings to get stable readings from the sensor. How to get accurate readings from MAX30102? The

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Tutorials

Commonly used Switches in Electronics

In this post today, we will look at many types of switches. This article will guide you on how to choose the right switches for your applications. What is a Switch?? A switch is a device that is designed to interrupt the current flow in a circuit, in other words, it can make or break

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Tutorials

Using the MAX30102 Pulse Oximeter Sensor: Part 1 – Getting Started

Maxim produces great healthcare sensor ICs. For measuring oxygen saturation and heart rate, they make the simple to use and hugely popular MAX30102 sensor IC. The sensor requires minimal external circuits, provides an interface through I2C, and is almost plug and play! This sensor is a perfect solution for Wearable Devices, Fitness Assistant Devices, Smartphones,

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Tutorials

ESP32 Buying Guide

In this article, we’re going to compare several ESP32 development boards. The aim of this article is to help you choose the best ESP32 development board for your project requirements. The ESP32 is the ESP8266 successor. The ESP32 is loaded with lots of new features. It combines Wi-fi and Bluetooth wireless capabilities, and it’s dual-core.

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Tutorials

How to Use a Capacitive Soil Moisture Sensor V2.0 Module With Arduino

Soil Moisture Sensors are inexpensive, simple, easy to use and can be used to build interesting IoT & automation projects! They are available in a wide range of models, output types (analog, digital, wireless etc) and variants. Even the simplest soil moisture sensor with an analog output is accurate enough to detect between dry and

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Tutorials

Programming ESP32-CAM With ESP32-CAM-MB Micro USB Programmer

Learning how to program the ESP32-CAM AI-Thinker board using the ESP32-CAM-MB micro USB programmer. This is the easiest way to program your ESP32-CAM board. This micro USB programmer works like a shield that you can attach to the ESP32-CAM board. The programmer comes with a USB socket that you connect directly to your pc. However,

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Tutorials

Installing ESP32 Add-on and Libraries in Arduino IDE

Before starting the installation procedure, make sure you have the latest version of the Arduino IDE installed in your system. To install the ESP32 board in your Arduino IDE, Open Arduino IDE, go to File> Preferences. Enter https://dl.espressif.com/dl/package_esp32_index.json into the “Additional Board Manager URLs” field as shown in the figure below. Then, click on “OK”.

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