TUTORIALS

How to make a guitar with a micro:bit ?

November 14, 2020| Posted in ALL, TUTORIALS| Micro:bit Editor| 1700

Change the tones of the micro:bit guitar from adjusting the distances from the bricks board to sonar:bit.

Microbit Programming: Showing a Running Pixel on the LED

November 6, 2020| Posted in ALL, TUTORIALS| Micro:bit Editor| 3270

Before, we briefly introduced the basic knowledge of microbit programming, this week, we will learn how to program on the microbit LED display.

How to build a device of detecting the distance with a micro:bit

November 1, 2020| Posted in ALL, TUTORIALS| Micro:bit Editor| 2895

The novel Coronavirus is still existing in the world and we need to make sure the social distance be kept in public areas such as in hospitals or banks. This device will warn people who do not keep enough distances to others.

Voltage, Current, Resistance, and Ohm's Law

October 24, 2017| Posted in ALL, TUTORIALS| Admin| 3399

There is a wonderful connection between voltage current resistance, they are all related to the movement of charges. You can get more detailed information from ELECFREAKS.

Get to Know WS2812b

October 2, 2017| Posted in ALL, TUTORIALS| Admin| 3641

WS2812b is the kind of LED bead that I like most. It does not like common LED that needs IO control to every LED bead, nor like RGB LED that needs three pins to realize a colorful display. The biggest characteristic of WS2812b is that it can realize cascade connections. With an IO port only, you can control the color of all LED beads. Today, I am going to talk about the reason why WS2812b has this amazing function.

Arduino Simulation Computer Keyboard

August 5, 2014| Posted in ALL, TUTORIALS| Admin| 2284

Using Arduino to simulate a computer keyboard we can freely set the key time and key value, ELECFREAKS can provide quality Arduino keyboard, click to learn more

HC-SR04 Ultrasonic Module User Guide

August 12, 2013| Posted in ALL, TUTORIALS| Admin| 3912

Hc sr04 ultrasonic distance sensor can be used to measure the distance by detecting ultrasonic rays. Get hc sr04 ultrasonic distance sensor at ELECFREAKS.