Arduino and the Electronics(2019-11-12)

1.Voltage 1. Input Voltage 7 to 12 Volt (recommended) 1. Power 1. a pin should be reduced to 20 mA 1. Resistance

The Arduino Uno works with 5 Volt, the Arduino Micro with 3.3 Volt, also the ESP32

Arduino and the Electronics(2019-11-12)

You learned in the school?

              **I = V/R**

Important is also to remind:

If you have a electronic module in the ciŕcuit , look for the own Voltage of the module and use a formula like this to determinate the necessary resistor

R = V0 -Vf /I or as example 5V - 2,2/0.01 = 280 Ohm, then that is the resistor you need.

electronic components

We have active and passive components

Passive Components

1.Resistors 1.capacitors 1. inductors

Active Components

1.transistors 1. thyristors 1. optocoupler

Resistor

potentiometer

The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential (voltage)

LDR

A photoresistor (or light-dependent resistor, LDR, or photo-conductive cell) is a light-controlled variable resistor.

RTD

Resistance thermometers, also called resistance temperature detectors (RTDs), are sensors used to measure temperature.

capacitor

diode

A diode is a two-terminal electronic component that conducts current primarily in one direction (asymmetric conductance); it has low (ideally zero) resistance in one direction, and high (ideally infinite) resistance in the other

LED

transistor

A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. It is composed of semiconductor material usually with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor's terminals controls the current through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power, a transistor can amplify a signal. Today, some transistors are packaged individually, but many more are found embedded in integrated circuits.

switch

button

relay

motor

servo

Circuits

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