ESP32 – Digital Button

About two years ago I was at a code conference and was given an ESP8266. To be honest, I had no idea what it was nor it’s capabilities at the time. When I got home, I put it in a box in my lab and forgot about it. Fast forward a year and I discovered…

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AVRISP MKII Tutorial – The setup

So, you finally got a hold of an AVRISP MKII and have no idea what to do next .  Well lucky for you the setup and overall configuration is a lot easier than you might think. This mini tutorial will demonstrate how to flash an AVR chip via the Atmel Studio 6 IDE.  If you…

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MAKE ELECTRONICS – CHP 2 EXERCISE 10

Exercise ten, “Transistor Switching”.  This exercise introduces a very important component which has characteristics similar to the relay.  Whereas both components can switch the flow of electrical current. That said, the documentation explains the ins and outs of transistors, in that they are naturally off until turned on; considered a limitation.  Relays on the other…

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MAKE: ELECTRONICS – CHP 2 EXERCISE 9

Exercise nine, “Time and Capacitors”.  This exercise demonstrates how one can measure time by simply placing a capacitor in series with a resistor.  The importance of this concept is related to the “time constant”.  That said, by placing a capacitor and resistor in series, the amount of time it takes for the capacitor to charge…

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MAKE: ELECTRONICS – CHP 2 EXERCISE 8

Exercise eight, “A Relay Oscillator”. This exercise is a slightly revised version of exercise seven in which the direct connection was between the push button and the coil.  In exercise eight, the voltage arrives at the coil as a result of traveling through the contacts of the relay.  Therefore, when the push button is depressed,…

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Make: Electronics – Chp 2 Exercise 7

Exercise seven “Relay-Driven LEDs”.  This experiment introduces the Relay component and is used to drive two LEDs.  The heart of a relay is basically an iron core wrapped around wire.  The electricity running through the coiled wire will produce a magnetic reaction,  triggering an internal lever that closes two contacts.  During this process the relay…

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Make: Electronics – Chp 2 Exercise 6

Exercise six “Very Simple Switching”.  Looking back to exercise four we covered how to turn electricity into a functional property and lit an LED.  This exercise follows up that concept and is the beginning stages of controlling electrical power via switches. Putting together the discrete components is quite simple but can feel a little tedious…

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Make: Electronics – Chp 1 Exercise 4

Exercise four “Varying Voltage” is an introduction to the manipulation of voltage via a pot (potentiometer). One of the initial requirements of this exercise is to dismantle a pot and perform a visual inspection of its inner-workings.  Personally, I am not a fan of ruining a perfectly functioning component. However, if you are careful, it…

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Make: Electronics – Chp 1 Exercise 3

Exercise Three “Your First Circuit”.  At this point we finally begin to make something that resembles an electronic circuit.  The purpose of the experiment is to show you how to turn electricity into a functional property and power a light-emitting diode. One of the key take-a-ways from this experiment is what is learned about the…

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Make: Electronics – Chp 1 Exercise 2

Exercise Two “Shorting a Battery” exposes the reader to the concept of voltage, current, and resistance.  The end result is non-eventful as there are no visual effects of the short. However, the battery itself becomes very warm.  This is a result of increased current and electrical flow through the wires and the electrolytic properties of…

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