Michelle

20.Arduino learning notebook--Use Arduino Duemilanove to download the bootloader to other chips               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 this experiment, we use Arduino Duemilanove to download the bootloader to the chip. Note: after testing this method of download ing the bootloader , we found that it only can be tested successfully on   using the 328P of  Arduino Duemilanove, Arduino nano . Material preparation: 1.A c ontrol board of Arduino Duemilanove/UNO/NANO 2.A 100 Ω resistance 3. Two 22p capacitors 4. A 16M Hz rystal Oscillator 5. One Atmega8 DIP packaging chip One key, One breadboard and some connected wires. First, open the arduino IDE, in the File's Examples, select ArduinoISP, compile the program, and download it ...

13.Arduino learning notebook--four-bit digital tube experiment                     Juvtmall  ( a company supply  PCB Prototyping ,  PCBA service  and sell kinds of  components, modules  and so on)  ( Catduino has the same function of Arduino) This experiment uses   the arduino to drive a four-bit digital tube.   It is  necessary to drive the current-limiting resist a nce of the digital tube. There are two ways  of current-limiting resist a nce, one is connecting to the d1-d4 anode . The benefit of this method is that the resistance demanded is less,  produce s   that different n umbers will produce  different brightness in each number . 1 is brightest and 8 is the darkest.The other method is connecting to  the other eight pins, which show s  uniform  brightness , but needs  more resistance.This experiment us es   eight  220 Ω res...