Electrical Applications, quiz 0001

Look at the following circuits. What will happen when the switch is turned on: Simple LED, resistor and battery 2. Simple LED, resistor and battery 3. Simple LED, resistor and battery….

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Electrical Applications, Components, Values and Units

Resistors https://en.wikipedia.org/wiki/Resistor   Resistors are measured in Ohms Ω. They are used to limit the current that flows through the circuit. Resistors mostly come in a fixed numeric. 1, 1.5,….

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Electrical Applications, Resistor Color Code

How do you identify a resistors value if you don’t have a multimeter available? Each resistor has a band of colors. These bands identify the value in Ω as well….

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Electrical Applications, 555 Timer

The 555 is our first steps into chips. The 555 is a timer chip, this means that it will ‘tick’ like a clock. We will use this to turn an….

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Electrical Applications, Potentiometer

A Potentiometer (pot) is a resistor that can be both fixed and varied, also known as variable resistors. A typical Potentiometer: https://www.adafruit.com/product/356?gclid=Cj0KCQjwu_jYBRD8ARIsAC3EGCJ5JS4kSB1WgJjxSOwnekQ925ZnsxyONZT5ODQkNDcvyr0QBmkxM20aAgm7EALw_wcB    

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Electrical Applications and the Transistor

Looking at Electrical Applications we will focus on various aspects to learn. This one covers the transistor. In its simplest form, a transistor acts like a switch. Electricity will flow….

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NPM Raspberry Pi Zero onoff and Closures

Using a Pi Zero to monitor some input pins, a change on the input will trigger an event. This is using NPM onff (https://www.npmjs.com/package/onoff). The example code with a button….

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Pi Zero W read GPIO with nodejs 10

The Pi Zero W uses the arm6l architecture. For node v10 the zip file can be found in this directory, I would imagine future versions would be follow a similar….

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Makeblock Starter Robot: Temperature Reading

The Makeblock Starter Robot comes with an Arduino derivative called the Orion. This board is similar to the Uno but adds RJ45 connectors to allow simple connection to peripheral devices….

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Tracking the sun location

This really useful web application shows the position of the sun at a location at any time of day or year. Very useful when determining where to put solar panel….

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