同样是5V，为什么单片机输出的电流只有几毫安？ 为了让大家彻底搞懂这个问题，首先我们需要知道单片机引脚的构成。 以Atmega328单片机为例，这是它的内部引脚原理图。 可以看出，单片机的引脚和内部电源之间并不是只有一个MOS管，他还有一个电阻。 因为有 ...

The front circuit board is the meat and potatoes of the device. It hosts the user interface in the form of buttons, LEDs, and a graphic LCD screen. You can also see the USB mini-b connector which ...

There are many reasons to build your own Arduino circuit on a protoboard or a custom-designed printed circuit board. At the heart of the Arduino platform is an AVR microcontroller, in usual way you ...

Need more Arduino board? Do not spend more money for another one. Why not try to build your own DIY Arduino board? It is easy and simple. Now I will address one of the issues of making your own ...

April Fools’ Day may have passed, but we really had to check the calendar on this hack. [Damian Peckett] has implemented an Apple ][, its 6502 processor, and a cassette port, all on an Arduino Uno. If ...

There seems to be no shortage of hobby boards available to program on these days. Most, like the popular Arduino and Raspberry Pi boards, started life as a tool to teach students about programming and ...