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4. Arduino Learning notebook -- Make the first circuit: Blink single LED  (VOL.1)               Juvtmall  ( a company supply  PCB Prototyping ,  PCBA service  and sell kinds of  components, modules  and so on) (  Catduino  has the same function of Arduino) In the previous  experiment , we learned how to make an  LED  to blink, and the following experiment would control six  LEDs. [ code ]  //set IO pin as controlling the LED i nt Led1 = 1; i nt Led2 = 2; int Led3 = 3; i nt Led4 = 4; int Led5 = 5; int Led6 = 6;  // Led display  style 1  sub program void style_1(void) {   unsigned char j;   for(j=1;j<=6;j++)   {     digitalWrite(j,   HIGH);     dela...

How does the eight tails cat become nine tails cat in the end? For more details, you can click here: www.juvtmall.com The other blog

3.  Arduino Learning notebook -- Make the first circuit: Blink single LED               Juvtmall  ( a company supply PCB Prototyping , PCBA service  and sell kinds of components, modules  and so on) Before making any circuit, be sure to understand the parameters of the original in the circuit, its working voltage, working current and so on. LED ’s working voltage is generally 1.5-2.0 V, the working current is generally 10-20m A , and the reverse breakdown voltage is 5V. The control board logic circuit power supply is 5V. According to the above parameters assumption LED choose 1.7 working voltage, working current choose 15 m A , current-limiting   resistance  =( total voltage - LED voltage)/current, so the current-limiting   resistance  = (5-1.7) / 0.015 = 220 Ω. First, you need to download the compiled software from the arduino's official website, the address is http:...

It is said that there is a kind of cat that can reach the heaven to become the god as long as nine tails. Every practice to one stage will have one more tail, but it is very difficult to success. When the cat uniting to eight tails, it will get a prompt to help its owner to achieve a wish, after the completion of wish, it will grow a new tail as well as fall off a tail. It is still eight tails. It seems like a strange cycle, that is to say it's impossible to build a nine tail anyway. A very devout cat, has been practicing for hundreds of years and helping many people realize the desire, but still eight tails. One day, it met a boy be trapped by wolves, by its nature, quickly drove the wolves and saved the boy, then found the youth is the first master's offspring. According to the rules, it needs to help the boy realize a wish. The cat asked the boy what his wish was, and he could not answer it for a moment. The day passed and the boy still didn't make a wish. The ...

2. Arduino learning notebook -- What is Arduino? (VOL. 2)          Juvtmall  (a company supply PCB Prototyping, PCBA service, sell module and so on)  Arduino Cheap --Comparing with other platforms, Arduino is much cheaper. The cheapest Arduino can be made by ourselves. Even if it is assembled, it will not cost more than $35 . The cross-platform  -- Arduino IDE can run on the operating systems of Windows, Macintosh OSX, and Linux. Most of other MCU compilers only run on Windows. The simple programming environment  - beginners can easily learn to use the Arduino programming environment, and it can provide advanced users with enough advanced applications. For teachers, it is very convenient to use Processing programming environment, so if the students have learned the Processing programming environment, they would feel easy in study. Because they are fami...

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2. Arduino learning notebook -- What is Arduino? (VOL. 1)            Juvtmall  (a company supply PCB Prototyping, PCBA service, sell module and so on) If you want to understand arduino, it’s needed to know what a single chip machine is. Because the arduino platform is based on single chip of the AVR instruction set. 1.  What is a MCU? What are the differences between MCU and COMPUTER? A computer include s   five  parts: CPU(operation 、 control) 、 RAM(digital storage) 、 ROM （ pro gram  storage ）、 I/O (serial, parallel output, etc.). These parts are divided into a number of chips on a personal computer(PC), which are united  on a printed circuit board(PCB) called mainboard. In SCM, these  parts are all united  in a piece of integrated   circuit  chip , so  MCU. There are kinds of  single chip machines ,  beside the above parts, also integrates other parts such as anal...