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:date: 2025.11.05 14:07:40
:_modified: 1970.01.01 00:00:00
:tags: Arduino,HowTo,HW
:authors: Gilhad
:summary: Arduino_hw
:title: Arduino_hw
:nice_title: |logo| %title% |logo|

%HEADER%

Arduino_hw
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Arduino diode
================================================================================

* `1N4148 <https://arduino.stackexchange.com/questions/66691/which-kind-of-diodes-i-should-use-in-buttons-keys-matrix-input-making-gaming-k>`__

Arduino transistor
================================================================================

* BC327 - PNP
* BC337 - NPN
* `<https://forum.arduino.cc/t/universal-pnp-and-pnp-transistors-bjt-for-atmega328-based-arduinos-what-to-buy>`__

How to use buzzer correct way
================================================================================

Stephane reveal it `here <https://techexplorations.com/arduino/how-to-use-a-buzzer-the-correct-way/>`__ - use 10 |kOhm| resistor from pin, PNP transistor, 220 |Ohm| from +5V and antiparalel diode.

.. image:: buzzer_correct_way.png
	:width: 250
	:target: buzzer_correct_way.png