Blink 2 LED flasher using Arduino
Today we will make a 2 LED flasher using Arduino (UNO) Usual we use a transistors circuit to make two LED flasher. This we will study programing C code on Arduino. It is easy to learn. Step to step by Chayapol. Lets go! Figure 1 Define pictograms,easy to understand Figure …
Simplest programing C on Arduino UNO
Today, let’s do a one LED flasher. Which we use the Arduino Software (IDE). Although, difficult to use, because the text mode. But it works completed, the most popular and free. Step by step as 9 years boy learning. 1. Define symbol that human understand “LED is ON” and “LED …
Basic SPST (Single-Pole,Single-throw) switch
Mechanical switches permit or interrupt the flow of current. They are also used to direct current to various points. The basic knife switch is the simplest switch. OPEN = OFF , Closed = ON. This is called an SPST (Single-Pole,Single-throw) switch.
Easily draw circuit by easyEDA
My son draw circuits by a pencil, which is not beautiful at all as Figure 1. We found a way to draw a good and perfect EasyEDA.com, we can do circuit simulation, PCB design, Electronic circuit design online for free. It works well on Mac, Linux, Windows and Android: All …
How to fix unclear the 7 segment led display
I’ve bought a cheap digital frequency counter kits. It works great, can measure frequency up to 1GHZ in 19$ only. It use 8 the LED 7 segment display. But it’s a little brighter so cannot clearly read the value. Figure 1 low brightness LEDs My son fix easily this problems …
How to calibrate touch screen GARMIN GPS
I like taking the kids to tour upcountry. We purchased a GARMIN GPS to reduce stray. I like it because it can Map update any lifetime and cheap. But yesterday have a problem white screen with a message that touch dot. I try to calibrate touch screen. I started to …
Simple big robot toothbrush
Today, My son make a toy for younger sister. It is a Simple big robot toothbrush. The principle is very simple, It vibrates with movement, without direction and control. He took it to play with the cat great fun. Figure 1 the Simple big robot toothbrush He uses all old …