Arduino

Arduino is a convenient and flexible open source electronic prototype platform.Including hardware (various models of Arduino) and software (Arduino IDE). 
Arduino can sense the environment through a variety of sensors, controlling the lighting, motor and other devices to feed back and influence the environment.
These are some of arduino products in our company.
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1. Arduino learning notebook -- Button experience (volume 2)

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1. Arduino learning notebook -- Button experience (vol.2) www.juvtamll.com( a company supply PCB Prototyping, PCBA service, sell modules.)
The standard is 512 means 2.5V in this experience, someone get trouble in this way: led will light when the button haven’t been pushed sometimes. This is caused by the interference, such as the induced voltage is more than 2.5V, for improving the accuracy, we need to improve the threshold.
The reason of closing to the button with hand will light the lED is that there’s no pull-down resistance, then it has been interference by the outside.
The way of set the Pull-down resistance:
The following is using a Arduino Uno’s build-in LED as the indicated LED
This program is different from the vol.1, for this program has been added a software for eliminating noise, the purpose is for achieve the goal of push button then the LED light, or when you push the button, the LED won’t make the corresponding act.
What the meaning of software for eliminating noise? It’s a d…
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1. Arduino learning notebook -- Button experience (volume 1)

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1. Arduino learning notebook -- Button experience www.juvtamll.com( a company supply PCB Prototyping, PCBA service, sell modules.)
The button is a commonly used key, normally used to connect or disconnect the circuit, so as to control the the motor or other equipment. The buttons have a variety of appearance. This experiment is used for this kind of miniature keypad, 6mm, as shown below. Look at the back of the button, it has 4 pins.




When the button not be pushed, No. 1 and 2 are connected, 3 and 4 are connected. When the button is pressed down, all the pins will be connected.






We use button to control the led. The general situation is install the button series in the led circuit, however, it’s too simple. We use the indirect way, the button judge output voltage from the circuit. If the voltage is greater than 4.88 V, output high level to the LED circuit, whereas output low level. Using logical judgment to light or off the LED, this control method is used widely. The connection method is shown b…
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19.Arduino learning notebook--Atmega8 makes the minimum arduino system

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19.Arduino learning notebook--Atmega8 makes the minimum arduino system

Juvtmall ( a company supply PCB Prototyping, PCBA service and sell kinds of components, modules and so on) ( Catduino has the same function of Arduino)

Atmega8 is the cheapest of the arduino's officially supported chips, so we'll take it to explain how to make the arduino minimum system on the breadboard. Prepare the material 1. One Atmega8 DIP packaging chip 2.One 16MHz Crystal Oscillator 3. Two 22P capacitors One key, One breadboard and some connected wires.
Let's look at this chip


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