First of all, the necessary accessories include the appropriate power supply (an AC adapter or a USB A-B cable to connect the board to your computer). The breadboard, connection cables and electronic components in THT technology will also prove useful (at the beginning, resistors with different values and diodes are mainly worth buying). Arduino is often sold in kits with accessories – it is worth taking a look at such kits if you want to be sure that the parameters of the accessories match the parameters of the board itself. Moreover, the price of the whole set is usually lower than the total value of its elements when purchased separately. A simple display screen can also be useful, especially for learning the basics of electronics and programming. You will then be able to program it to display results in real-time, such as received sensory data. Good and inexpensive learning accessories also include motors and servos. They will help you to find out more about the use of such devices (commonly used in robotics) and learn how to control a motor using the digital PWM outputs or create a PID controller using, for example, a magnetic encoder (to measure the number of motor shaft revolutions). It is also worth trying different types of analog sensors that work perfectly with the board.
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