Tutorials

The WeMos D1 Mini is a compact ESP8266 development board with 11 digital I/O pins, one analog input, and built-in WiFi. This guide covers the complete WeMos D1 Mini pinout, including the D0–D8 to ESP8266 GPIO mapping, I2C, SPI, UART, ADC, power and boot pins. After the pinout reference, we'll …

Wouldn’t it be cool if you could control something by just waving your hands? Well, this is what the grove gesture sensor does. In this post, I will show you how to use this sensor with an Arduino and create a simple gesture control project.

With the 8 x 8 LEDs in a dot matrix, you can create several different characters and graphics. Imagine what you can do if you have a MAX7219 cascaded dot matrix module.

Programming a microcontroller in assembly languages takes time and to reduce that time, embedded systems engineers often have tricks up their sleeves. One of those tricks is the use of lookup tables. In this post, I will share how I use lookup tables in assembly language for the PIC16F84A microcontroller.

The ADXL345 is an integrated circuit that measures acceleration in 3 axes. Like most sensors, this device comes with an easy-to-use breakout board and is usable through SPI or I2C. This tutorial aims to show how you can interface this accelerometer with an Arduino.

The MPU6050 is a six-axis gyroscope and accelerometer in one package. With its easy-to-use breakout board, it became one of the more popular sensors for the Arduino platform. This article looks into this sensor and teaches how to use it to determine the orientation of an object.

Last time, I showed how easy it is to detect colors using the Pixy2 camera. However, the camera’s price might be too expensive for some. Luckily, there is a much cheaper option to implement an Arduino color sensor. The color sensor I’m referring to is the TCS230 (and equivalent TCS3200) …

Unlike stepper and servo motors, precision control for DC motors is impossible unless a sort of feedback mechanism is employed. If your application requires a consistent motor speed or a stimulant-dependent speed then you certainly need feedback. This tutorial aims to develop a simple motor speed sensor for a more …

The 28BYJ-48 stepper motor is a cheap and robust stepper motor, suitable for use on robotics and other slow-speed applications. In this tutorial, I will guide you on how to use this stepper motor with Arduino.

An ultrasonic sensor is a common tool for measuring the distance of an object in front of it. While I recommend using an Arduino with ultrasonic sensor to achieve real-time results, it is still possible to use the sensor with a Raspberry Pi. This tutorial shows you how to build …