Raspberry Pi equipment and accessories
Accessories and equipment are available for Raspberry Pi, no matter which model, such as sand more. As confusing as that is, that’s how good it is. The prices are comparatively low and the availability very good. It looks a lot worse on other mini computers.
The only question is, what do you need, what is optional and still useful?
Raspberry Pi Overclocking
Raspberry Pi has a CPU clock speed of 600 or 700 MHz depending on the model. If you want you can overclock Raspberry Pi, depending on the model, up to a maximum of 1,000 MHz or 1,200 MHz. An appropriate configuration is provided on the software side.
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The input and output level of a GPIO of Raspberry Pi for “High” is at a voltage of 3.3 volts. But if you have a larger input level then you can not apply this voltage directly to a GPIO. The GPIO would be overloaded and broken.
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Basically, you can operate a GPIO pin either as an input or as an output. As an input, it can assume the states “High” and “Low”. For example, from a switch or button.
In general, Raspberry Pi’s GPIOs are wired with resistors to set inputs to a defined level (+ VCC or GND) or to limit the current.
Raspberry Pi control and program GPIO
There are many different ways to control and program the GPIOs. Which one is used depends on the requirements one has. Or simply of your own abilities to become familiar with certain programming languages and libraries. Previous knowledge makes getting started easier. But maybe that’s not the way to do what you’re supposed to do with the GPIOs. Therefore, here is a small selection of the possibilities to control and program GPIOs.
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