TUTORIALS

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

November 1, 2020| Posted in ALL, TUTORIALS| Micro:bit Editor| 2867

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| 3324

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| 3564

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.