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beginner-friendly electronics tutorials and projects


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Three wires to rule them all: CD4094 & CD4021 shift register tutorial

December 17, 2022 tutorial

What do you do when your microcontroller does not have enough pins? In this tutorial we will learn how to use shift registers to control LEDs and to read out pushbuttons, all with just three wires! In six steps, we will learn all about the CD4094 output-type shift register, the CD4021 input-type shift register, and how to use them with a PIC microcontroller. And in the end we will pit it all to use with an SNES game controller, which—you guessed it—also uses shift registers on the inside. Keep reading.

  • CD4094
  • CD4021
  • shift register
  • PIC16F1455
  • beginner-friendly
  • schematic
  • tutorial

Making a safe with servos & NE555 timers

August 27, 2022 project

If you are searching for a fun, beginner-friendly electronics project: look no further. Today we will build a simple safe using basic components such as servo motors and NE555 timer chips. We will go through all steps in great detail, and in the end you will have your very own safe. Let's go! Keep reading.

  • servo
  • NE555
  • DIY safe
  • NE555 servo control
  • NE555 astable oscillator
  • beginner-friendly
  • schematic
  • project

Building an analog clock with a microcontroller

April 30, 2022 project

Microcontrollers are digital devices, but in this project we will turn it around and use a PIC microcontroller to build an analog clock using a panel meter. And what's more, we will make use of the SLEEP mode of the PIC microcontroller so that this circuit can be run off of batteries and keep the time for decades when not powered on. Keep reading.

  • SLEEP mode
  • analog clock
  • interrupts
  • PIC microcontroller
  • PIC16F1455
  • beginner-friendly
  • schematic
  • tutorial

Your own electronics lab... in a tray!

December 18, 2021 article

Maybe you're not sure yet if electronics is the right hobby for you, so in this article I want to show you how you can set up your own electronics lab in a tray! It has adjustable power supplies, a PICkit3 programming adapter, a volt and ampmeter, and even a little logic probe. And the best part: it doesn't take up a lot of space, you can get everything for around $150, and if you don't need it anymore you can just tuck it away under your desk! Keep reading.

  • electronics lab
  • electronics beginner
  • getting started
  • breadboard electronics
  • power supply
  • PICkit3
  • PIC microcontroller
  • voltmeter
  • amperemeter
  • lopic probe
  • beginner-friendly
  • article

MAX7219 LED multiplexing tutorial

December 4, 2021 tutorial

The MAX7219 integrated circuit uses multiplexing to drive up to 64 individual LEDs. And in this tutorial we will learn how the MAX7219 works, what multiplexing is, and how you can use popular MAX7219-based modules to drive 7-segment displays and LED dot matrix displays with a PIC microcontroller. Keep reading.

  • MAX7219
  • multiplexing
  • 7-segment display
  • dot matrix display
  • serial protocol
  • PIC16F1455
  • MPLAB X IDE
  • MPLAB X IPE
  • XC8 compiler
  • beginner-friendly
  • schematic
  • tutorial

How to get source code on a PIC microcontroller

November 6, 2021 tutorial

Say you have found a PIC microcontroller project that you really like. Because it uses a microcontroller it comes with source code that tells the microcontroller what to do. But how do you get that source code on the PIC microcontroller? This is what this tutorial is all about! Keep reading.

  • PIC microcontroller
  • How to program a PIC microcontroller
  • MPLAB X IDE
  • XC8 compiler
  • MPLAB IPE
  • PICkit3
  • .hex-file
  • tutorial

How to use WS2812 “NeoPixel” LEDs with a PIC microcontroller

July 12, 2021 tutorial

Do you want to step up your LED game? Then look no further! The WS2812 “NeoPixel” RGB LEDs are intelligent, individually addressable LED modules. And the best part: Besides two wires for power they only require one data line for as many LEDs as you could want. And today we will learn how to use the WS2812 LED with a PIC microcontroller. Keep reading.

  • WS2812
  • WS2812B
  • NeoPixel
  • RGB LED
  • SK6812
  • PIC microcontroller
  • PIC16F1455
  • beginner-friendly
  • schematic
  • tutorial

Breadboard capacitive touch sensor tutorial

May 15, 2021 tutorial

Capacitive touch sensors are everywhere, and today we will learn how to build one from scratch on a breadboard with a PIC microcontroller, a resistor, and a wire. And to keep things interesting, we will build a momentary switch, a toggle switch, a timer, and a 3-level dimmer. Keep reading.

  • touch switch
  • capacitive switch
  • breadboard stray capacity
  • PIC16F627A
  • touch lamp
  • beginner-friendly
  • schematic
  • tutorial

CD4017 code lock with wrong code detection

February 28, 2021 project

Some time ago we learned how to use the CD4017 decimal counter integrated circuit, and in this project we will use it to build an advanced digital code lock with a built-in “wrong code alarm.” This circuit is quite reliable because it detects any wrong code attempts, which also makes this circuit rather unique among all the other CD4017 code lock varieties out there. Keep reading.

  • CD4017
  • code lock
  • combination lock
  • decimal counter
  • debouncing
  • power-on reset
  • CD4081 AND gate
  • NE555 reset circuit
  • project

DS1302 real-time clock tutorial: the clock that doesn't forget the time!

November 4, 2020 tutorial

Whenever you are building a clock with a microcontroller there is a problem: when you turn off the power, the time is lost. This is where a real-time clock comes in. It's a handy little integrated circuit that uses a small battery to keep track of the time whenever the main power is disconnected. And in today's tutorial we will learn all about it: how to use it with a microcontroller and how to store custom bits and bytes on there as well. Keep reading.

  • DS1302
  • real-time clock
  • RTC
  • 32.768kHz
  • battery backup
  • real-time clock RAM
  • PIC microcontroller
  • PIC16F1455
  • buffer battery
  • TLC5916 LED driver
  • beginner-friendly
  • schematic
  • tutorial

CD4017 tutorial: the IC you can count on

October 7, 2020 tutorial

Whether you are a beginner who wants to take some first steps in electronics or you already have some experience, the CD4017 is an integrated circuit everybody should know. It works as a simple digital counter from 0 to 9, but it can also be used in much bigger projects, and today we will learn all about it! Keep reading.

  • CD4017
  • decimal counter
  • debouncing
  • power-on reset
  • cascading
  • custom resets
  • CD4081 AND gate
  • reliable reset circuit
  • external clock
  • NE555
  • beginner-friendly
  • schematic
  • tutorial

TLC5916 tutorial: best breadboard 7-segment LED driver!

July 24, 2020 tutorial

Whenever you have a project that needs to show some information to the user, 7-segment displays are a great way to do that. In this tutorial I will show you how to use the TLC5916 driver IC to control as many 7-segment displays that you like. And second, I will show you a method to mount 7-segment displays right on top of their TLC5916 driver ICs which allows for a super clean and space-saving breadboard layout! Keep reading.

  • TLC5916
  • 7-segment displays
  • breadboard electronics
  • constant current
  • LED driver
  • shift register
  • PIC16F1455
  • MPLAB X IDE
  • MPLAB X IPE
  • XC8 compiler
  • beginner-friendly
  • schematic
  • tutorial

NE555 tutorial: three useful circuits

June 20, 2020 tutorial

The NE555 is an extremely versatile integrated circuit that can be used for a wide variety of situations and projects. Today we will learn about what is inside an NE555, and how we can use it to build an oscillator, a timer, and a flip flop switch with a few capacitors, resistors, and of course the NE555. Keep reading.

  • NE555
  • oscillator
  • timer
  • flip flop
  • astable mode
  • monostable mode
  • bistable mode
  • beginner-friendly
  • schematic
  • tutorial

Control LEDs with your computer using RS232

September 20, 2019 tutorial updated April 26, 2020

RS232? That sounds so 1990! Maybe so, but in this tutorial I want to show you how easy it is to control a bunch of LEDs from your computer using RS232. But instead of LEDs you can also control all kinds of other electronics with it! Like the scrolling text display from last time, hooked up to a laptop and working as a typewriter! Keep reading.

  • RS232
  • serial port
  • USART
  • RS422
  • MAX232
  • level shifter
  • data transmission
  • BAUD rate
  • tutorial

How to make a scrolling text display

March 3, 2020 project

Some time ago we learned how to use shift registers with microcontrollers, and in this project we will use them together with the PIC16F1455 microcontroller to build a scrolling text display. In this article we will go through all necessary steps so that you can easily build your own! Let's go :) Keep reading.

  • scrolling text display
  • PIC16F1455
  • CD4094
  • shift register cascade
  • PICkit3
  • In-Circuit Serial Programming
  • ICSP
  • step-by-step
  • beginner-friendly
  • project

Vintage computers and terminals from the 1980s

February 14, 2020 article

Nowadays we kind of take computers for granted. In the late 1970s and early 1980s, however, computers were something new and exciting. I have recently become interested in vintage computers from that time, and in this article I want to show you what I find the most appealing terminals and computers from around 1980. Keep reading.

  • vintage
  • 8-bit computers
  • dumb terminals
  • 1970s
  • 1980s
  • monochrome CRT

Understanding digital to analog converters

January 19, 2019 tutorial

In this tutorial we will learn how to use digital to analog converters (DACs) to create an analog voltage from a digital number. DACs are the opposite of analog to digital converters (ADCs) that we already talked about previously. At the end, we will control the brightness of an LED via the DAC module of the PIC16F1455. Keep reading.

  • tutorial
  • analog signals
  • digital to analog converter
  • DAC
  • string resistor ladder network
  • R-2R network
  • reference voltage
  • resolution
  • PIC16F1455
  • beginner-friendly
  • breadboard
  • schematics
  • microcontroller

How to use light-dependent resistors (LDRs) with microcontrollers

January 13, 2020 tutorial

Microcontrollers show their true potential when we connect them with sensors providing the microcontroller with information about the real world. In this tutorial we will learn how to connect a simple light-dependent resistor (LDR) to a PIC microcontroller that allows us to have the controller react to the ambient brightness. Keep reading.

  • LDR
  • light-dependent resistor
  • photoresistor
  • photodiode
  • phototransistor
  • brightness control
  • lux
  • ADC
  • analog to digital converter
  • voltage divider
  • microcontroller
  • tutorial

Drivers 101 - learning how to control large loads with a small microcontroller

December 28, 2019 tutorial

For most of our projects we have relied on switching LEDs ON or OFF. But what if we want to control something bigger than an LED, say, a lightbulb? Or many many LEDs that draw a substantial amount of current? In this tutorial we will learn how to use drivers such as transistors and relays to accomplish exactly that! Keep reading.

  • driver
  • NPN
  • PNP
  • transistor
  • transistor array
  • relay
  • solid state relay
  • thyristor
  • TRIAC
  • tutorial

A realistic, flickering electronic candle

December 15, 2019 project

It's winter, it's getting cold outside, so let's light up an electronic candle to fill our hearts and houses with warmth! This project will teach us a lot about generating random numbers on a microcontroller with an analog to digital converter and controlling LED brightness via pulse-width modulation. So let's get started! Keep reading.

  • project
  • candle
  • random number generator
  • rnd
  • analog to digital converter
  • ADC
  • pulse-width modulation
  • PWM
  • PIC16F1455
  • PICkit3
  • beginner-friendly
  • .hex file
  • source code
  • schematic

Understanding analog to digital converters

December 8, 2019 tutorial

When working with microcontrollers we sometimes forget that the real world does not just consist of 1's and 0's. It is what we call analog, and in this article we will learn on how to convert analog values from the real world (like the position of a potentiometer) into a digital number consisting of 1's and 0's. Keep reading.

  • tutorial
  • analog signals
  • analog to digital converter
  • ADC
  • conversion time
  • reference
  • resolution
  • beginner-friendly
  • breadboard
  • schematics
  • microcontroller

CD4026 decimal counter tutorial

November 17, 2019 tutorial

The CD4026 is an integrated circuit (IC) that works as a counter from 0-9 with an integrated decoder for a 7-segment display. I think it is an ideal beginner circuit for anybody who wants to learn electronics. In this tutorial we will go through the very basics of this IC and learn, step by step, how to connect it to pushbuttons, a 7-segment display, and a battery, to build our own counter! Keep reading.

  • CD4026
  • decimal counter
  • 7-segment display
  • common cathode
  • debouncing
  • beginner-friendly
  • schematic
  • tutorial

My electronics gear over the years

November 8, 2019 article

Over the last 15 years I have used many pieces of electric/electronic/mechanical tools and equipment (“gear”), and some of them are great and I still use them, and others turned out to be a bit of a downer. In this article I list those that come to mind right now, and add their advantages and disadvantages. Keep checking back, as I will continuously update this page! Keep reading.

  • power supply
  • bench multimeter
  • analog multimeter
  • digital multimeter
  • oscilloscope
  • digital storage oscilloscope
  • logic analyzer
  • microcontroller programmer
  • soldering station
  • solder fume extractor
  • desoldering pump
  • desoldering braid
  • tools

How do old school analog panel meters work?

October 27, 2019 tutorial

Panel meters are simple electromechanic devices that can be used to measure currents, voltages, and resistances. Even though they seem to fade away in today's ever more digital electronics world, I think it is worthwhile to learn a little bit about them. How do they work? And how can we use them in electronics to measure stuff? Keep reading.

  • panel meter
  • ammeter
  • voltmeter
  • ohmmeter
  • moving coil instrument
  • magnetic field
  • spring
  • tutorial

Learn binary!

October 18, 2019 tutorial

We all know decimal numbers, but computers work with binary numbers which are formed from 0's and 1's. When working with microcontrollers it is extremely helpful to know a little bit more about binary numbers as well as operations that can be performed on them (called Boolean operations). In this tutorial we will go through the basics so that we can face any binary number that crosses our path! Keep reading.

  • decimal
  • binary
  • hexadecimal
  • Boolean operations
  • NOT
  • AND
  • OR
  • NAND
  • NOR
  • XOR
  • SHL
  • SHR
  • tutorial

What is your favorite electronic display?

October 11, 2019 article

I have always found displays one of the most fascinating things about electronics. There are so many interesting and creative ways to visualize data! In this week's article we will take a look at a lot of different displays, just so see what's out there. Many of these display technologies are quite old and no longer in use. All the more reason to take a look! And who knows, maybe you will come across on of these displays :) Keep reading.

  • electronic display
  • seven-segment LED
  • LED matrix
  • flip dot
  • edge-lit
  • lightguide
  • IEE projection
  • LCD
  • VFD
  • Numitron
  • Nixie tube
  • Panaplex
  • CRT
  • NIMO tubes
  • thyratron

CMOS 101 - Understanding integrated circuits of the CMOS family

October 4, 2019 tutorial

Microcontrollers are great, but sometimes it doesn't hurt to think outside the box a little bit. In this tutorial we will go through the basics of integrated circuits (ICs) of the CMOS family, including counters, logic gates, encoders & decoders, shift registers, flip flops, and others. Knowing when you can use a CMOS IC to solve a simple problem can and will make your life easier! Keep reading.

  • CMOS
  • 5V logic
  • decimal counter
  • binary counter
  • logic gates
  • encoder
  • decoder
  • shift registers
  • tutorial

More microcontroller outputs with shift registers

September 29, 2019 tutorial

What do you do when your circuit has a lot of LEDs that need to be individually turned on and off? Do you always need a bigger controller with more I/O ports? The answer is no! Using a so-called shift register you can extend the number of outputs almost arbitrarily. In this tutorial we will learn how :) Keep reading.

  • shift registers
  • I/O ports
  • data
  • clock
  • strobe
  • cascading
  • CMOS
  • CD4094
  • tutorial

Use RS232 to connect your microcontroller to a computer or another controller

September 20, 2019 tutorial

RS232? That sounds so 1990! Maybe so, but in this tutorial I want to show you why I still think RS232 is a good protocol to connect your PIC circuit to a computer, and, perhaps more importantly, to another PIC controller. Many PIC controllers have a built-in USART module that allows you to utilize the full power of the asynchronous data transmission and reception offered by protocols such as RS232. Let's do it! Keep reading.

  • RS232
  • serial port
  • USART
  • RS422
  • MAX232
  • level shifter
  • data transmission
  • BAUD rate
  • tutorial

How to configure your PIC microcontroller

August 17, 2019 tutorial

In every single PIC microcontroller project we do it: set the configuration bits. But what does that accomplish? In this tutorial we will go through the basic options for these “configuration bits” and we will focus on the PIC16F627A microcontroller so that we have a concrete example. Keep reading.

  • configuration bit
  • PIC microcontroller
  • FOSC
  • WDTE
  • PWRTE
  • MCLRE
  • BOREN
  • LVP
  • CPD
  • CP
  • oscillator selection
  • watchdog timer
  • power-up timer
  • brown-out detection
  • low-voltage programming
  • EEPROM memory code protection
  • code protection
  • tutorial

What have we done?!

August 9, 2019 overview

In the last couple of weeks we have accumulated quite a few articles and projects! Time to list them all in a better way to make everything more organized :) I hope that this post is useful for anybody who stumbles upon FriendlyWire and wants to get a streamlined presentation of what we have covered here so far. Also, I will update this post with every new upload and article so that it is always up to date! Keep reading.

  • electronics
  • beginner-friendly
  • tutorial
  • PIC
  • microcontroller
  • how-to
  • projects
  • articles

How to adjust LED brightness with a PIC microcontroller

August 2, 2019 tutorial

In our first real microcontroller project we made an LED blink: it could be either ON or OFF. But what if you want to control the brightness of the LED and dim it? With a microcontroller this is usually accomplished by pulse width modulation, or PWM for short, and in this tutorial we will learn how to dim an LED using the PWM module inside a PIC16F627A microcontroller! Keep reading.

  • tutorial
  • PWM
  • LED
  • pulse width modulation
  • dimming
  • RC filter
  • analog-to-digital converter
  • DAC
  • beginner-friendly
  • breadboard
  • schematics
  • microcontroller

How to build a binary clock

July 29, 2019 project

In the last weeks we have learned how to program PIC microcontrollers, how to connect pushbuttons, and how to create a 1Hz time base signal. Now it is time to put it all together and build a clock. But not just any clock, a binary clock! Binary is the number system used by computers, and it is ideally suited to display numbers by using simple LEDs! Let's do it! Keep reading.

  • binary clock
  • microcontroller
  • pushbutton
  • LED
  • crystal
  • 4.194304MHz
  • interrupt service routine
  • simple project
  • .hex file
  • source code

Where can you buy electronic components?

July 12, 2019 article

So you have decided to get a bit more into electronics. Great! But where should you buy the electronic components that are needed for a project? How do you find them? Where do you get the best deal? In this week's article, we will go through common resources for electronic components, and by the end of this article you will have a good idea where you should buy that last missing component for your next cool project! Keep reading.

  • Amazon
  • Ebay
  • Mouser Electronics
  • Digikey
  • AliExpress
  • Banggood
  • Adafruit
  • SparkFun

Programming a 1Hz clock signal

July 5, 2019 tutorial

Electronic clocks are everywhere, so it is probably a good idea to learn how they work. And the most important part of a clock is, of course, the clock signal. In this tutorial we will learn how to generate a reliable 1Hz signal using a PIC microcontroller. In the end, we will write a small program that makes an LED blink precisely once a second. And soon enough, we will be able to build our first digital clock using this technique! Keep reading.

  • clock
  • 1 Hertz
  • quartz crystal
  • 4.194304MHz
  • microcontroller
  • timer
  • prescaler
  • interrupts
  • C code
  • .hex file

How to choose the right power supply?

June 28, 2019 article

As we build more and more circuits, and all of these circuits have to be powered, we have to ask ourselves: what is the best way to power an electronic circuit? With a power supply, of course. But there are many choices. In this article we will go through the major options out there and list their advantages and disadvantages. Keep reading.

  • power supply
  • linear power supply
  • switch mode power supply
  • voltage regulator
  • current regulator
  • galvanic isolation
  • short-circuit protection

What makes a microcontroller tick?

June 21, 2019 article

In the past projects and articles we have kind of glossed over this point: what makes a microcontroller tick? In this article we will fill that gap! We will focus on crystals, and crystal oscillators, and how they are used with microcontrollers to provide a stable timebase. Keep reading.

  • article
  • crystal
  • crystal oscillator
  • clock frequency
  • microcontroller
  • timebase
  • piezoelectric effect

Build your own electronic dice!

June 7, 2019 project

In the last weeks we have learned a lot about the basics on microcontrollers. In this project, we will combine all that knowledge. We will use a pushbutton, nine LEDs, and a microcontroller to make an electronic dice! How does it work? By pressing the pushbutton, the nine LEDs act as the spots of the dice and show a random number. Let's do it! :) Keep reading.

  • electronic dice
  • microcontroller
  • pushbutton
  • LED
  • random number
  • simple project
  • .hex file
  • source code

Schematics 101 – how to read them and not get overwhelmed

May 31, 2019 tutorial

Whenever you build an electronics project that surpasses a certain complexity, a schematic is needed. Schematics show all the components in an electric or electronic circuit, and how these components are connected to each other. At the same time, they can be quite hard to understand and it is easy to get overwhelmed. In this tutorial we will go through the basics of schematics, and I will list a few helpful strategies to understand even complicated schematics. Keep reading.

  • schematics
  • circuit
  • beginner
  • power supply
  • ICs
  • labels
  • junctions
  • conventions

How to read out a pushbutton with a PIC microcontroller

May 24, 2019 tutorial

In this week's post we will discuss the simple question of how to read-out the state of a pushbutton using a microcontroller. How can we check if a button is pushed down or not? What are common pitfalls? I am convinced that breaking down a more complicated project in little digestible pieces is a great idea to develop a deep understanding of a topic. So here we go! Keep reading.

  • pushbutton
  • tristate register
  • pullup resistor
  • pulldown resistor
  • debouncing
  • tutorial
  • beginner-friendly
  • microcontroller

Buttons and switches 101

May 18, 2019 tutorial

Whenever a circuit relies on an external mechanical input we use switches or buttons. I thought it would be interesting to collect the most common variants of switches and buttons that are typically found in electronics. Please let me know if I missed your favorite one! Keep reading.

  • pushbutton
  • switch
  • tactile switch
  • toggle switch
  • DIP switch
  • slide switch
  • limit switch
  • rotary switch
  • rotary BCD DIP switch
  • rotary hex DIP switch
  • reed switch
  • relay

Breadboards 101 – What do you need to know?

May 3, 2019 tutorial

Breadboards are incredibly useful for beginners in electronics. They are affordable, versatile, and re-usable. Nevertheless, there are a few key points to keep in mind when using them. In this tutorial we will go through the basic properties of breadboards. Keep reading.

  • tutorial
  • breadboard
  • beginner-friendly
  • power supply
  • jumper wires
  • Dupont wires

Make an LED blink: your first simple PIC microcontroller project!

April 26, 2019 tutorial

In the last two weeks I described how to write your first PIC microcontroller program and how to flash it on to the controller. In this week's post, we will describe the accompanying electronics. Don't worry, it is not very complicated, we will get there! Keep reading.

  • tutorial
  • LED
  • beginner-friendly
  • breadboard
  • schematics
  • troubleshooting
  • microcontroller

Your first microcontroller program!

April 19, 2019 tutorial

So last week I showed you how you can transfer a hex file onto a PIC microcontroller using the PICkit3 and the MPLAB IPE X software. For this week's post I think it will be nice to go through a very simple program that makes an LED blink. Keep reading.

  • tutorial
  • beginner-friendly
  • microcontroller
  • MPLAB X IDE
  • XC8 compiler
  • .hex-file

How to “flash” a PIC microcontroller?

April 12, 2019 tutorial

Many interesting online electronics projects make use of microcontrollers, and for the beginner this tends to be a pretty intimidating word. At least it was for me when I started with hobby electronics many years ago. But there is really no reason you should be afraid of this topic. It is a bit involved, sure, but you will be amazed how fast you can make progress when you shake off that initial fear. Keep reading.

  • tutorial
  • beginner-friendly
  • microcontroller
  • PICkit3
  • MPLAB X IPE
  • .hex-file

Useful software in hobby electronics

April 5, 2019 article

The computer has long entered the stage of hobby electronics. Sometimes I think this is a good thing, and sometimes I kind of dislike the idea. I mean, back in the day before computers were around it was already possible to build amazing pieces of equipment. But in this post I want to look at computers not as a distraction but rather as a useful companion for anyone who wants to get stuff done in hobby electronics. Keep reading.

  • article
  • freeware
  • Sprint Layout
  • Eagle Layout editor
  • Fritzing
  • LTspice
  • MPLAB X IDE

LEDs 101 – what do you need to know?

March 29, 2019 tutorial

LEDs, or Light Emitting Diodes, are everywhere. Your smartphone? Check. Your microwave? Check. Your electric toothbrush? Check. In this article I want to present the basic ideas of how LEDs work and how you can use them in simple projects without having to rely on expensive after market solutions (such as wired LEDs with battery drivers that are expensive and often of questionable quality). Here we go! Keep reading.

  • LED basics
  • beginner-friendly
  • led resistor
  • current limiting
  • LM317 constant current source

Soldering vs. breadboard layouts

March 22, 2019 article

Wires are the veins of any circuit. Nowadays most circuits are built using printed circuit boards (PCBs), and what used to be wires has become lanes of copper on a carrier board. This technique is quite involved and rather complicated: the circuit has to be designed, then converted into a PCB layout, and then it is etched out of a copper sheet. In modern PCBs there can be multiple layers (2,4, or even more) and the size of PCBs ranges from a few mm2 to desk-size. It sure can be intimidating as an electronics enthusiast to see these works of art! Keep reading.

  • article
  • soldering
  • printed circuit boards
  • perf board
  • breadboard

5 things I wish I knew when I started learning electronics

March 15, 2019 article

You want to get started in electronics, and there are so many things to keep track of. When I got into the field many years ago, I had to try and figure out what works. In the following list I am trying to compile the five most important facts that I wish I had known back then, so you don't have to go through the same trouble that I did. I hope you find it helpful! Keep reading.

  • article
  • batteries
  • power supply
  • maker communities
  • datasheets

Hello world!

March 8, 2019 article

Yet another blog sees the light of day! But why? In today's overly saturated online world, full of electronic gimmicks and gadgets, is it really necessary to have yet another blog? I think yes! I feel that it becomes harder and harder to understand the pieces of electronics that surround us, and this is only partly due to the increasing level of technological achievement. Mostly, it seems by design: it is a lot easier if you cannot fix your own radio when it breaks. Then you have to buy a new one when it breaks, don't you? Keep reading.

  • electronics
  • joy of understanding
  • friendlywire.com

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Tag Cloud

  • electronics
  • beginner-friendly
  • tutorial
  • PIC
  • microcontroller
  • how-to
  • PICkit3
  • MPLAB X IDE
  • XC8 compiler
  • .hex-file