AddOhms by Bald Engineer

DIY versus Turnkey PCB Assembly with Bald SENSE and MacroFab

Tue, 27 Aug 2024 13:26:00 +0000

My recent experience with the Bald SENSE sensor feather wing project reminded me that time is often our most valuable resource. This video documents the journey that has taught me crucial lessons about design, assembly, and the value of turnkey PCB assembly services. See what went right and what went wrong, and how I ultimately brought this project back to life with the help of MacroFab.

Rohde and Schwarz MXO5 Hands-On

Fri, 14 Jun 2024 13:20:35 +0000

The Rohde and Schwarz MXO5 is the fastest-performing oscilloscope on the market–even when all 8 channels are active! Bald Engineer checks out the precise trigger, ridiculously fast update rate, and a serial decode feature he missed with his review MXO4 review. Check out what is new with the MXO5, how it compares to the MXO4, and some new features available on both.

[R&S] MXO5 Product Page
[YouTube] Bald Engineer’s MXO4 Hands-On
[YouTube] Measuring Apple II Clock Glitch (with MXO5)

Measuring Apple II's intentional glitch

Wed, 20 Mar 2024 14:10:25 +0000

The Apple II’s CPU clock has jitter or a glitch. This issue is not new—it has been present since its original design in 1977! Bald Engineer uses an oscilloscope to show how often the glitch occurs and how to correlate that jitter to its source—which is useful when you are not testing 40-year-old devices. The device under test (DUT) in this video is the Mega IIe project. It’s a fully compatible Apple IIe built around the Mega II chip.

KiCad 8 - Bald Engineer's Top 8 Features

Mon, 26 Feb 2024 14:12:00 +0000

KiCad 8 just dropped, and here are Bald Engineer’s eight must-try features! The February 2024 release brings a whole host of new stuff to the Schematic editor. However, the PCB editor, CLI, and Simulation tools also received attention. (There are something like 900 closed issues for the 8.0.0 Milestone!) Which of these is your favorite?

MXO 4 Oscilloscope from Rohde and Schwarz Hands-On / Review

Mon, 10 Oct 2022 15:41:41 +0000

Hands down, no questions asked; the MXO 4 Oscilloscope from R&S is the most impressive scope I have ever used. The main reason I say that is because it is FAST. Over the past 20 years, I have worked for 3 of the 4 top oscilloscope companies (always in technical roles.) So I have used almost every major oscilloscope model for the past two decades.

Now, regarding oscilloscopes, “fast” can mean a couple of different things. First, it could mean the bandwidth is very high. The MXO 4 is a low-to-mid-range bandwidth instrument with options from 200 MHz to 1.5 GHz. So, that isn’t what I mean by fast. Second, it could mean how quickly it starts up. And even though it is a PC-based instrument, it is ready to make measurements in about 45 seconds. But that isn’t what I mean.

Copy/Paste KiCad 6 Text Hack | KiCad 6 Quick Tip #3

Thu, 14 Apr 2022 13:15:00 +0000

In mid-2021, I saw a demonstration of features for the upcoming KiCad 6. A statement caught me off guard: “the new copy/paste feature uses the system’s clipboard.” Then I watched as one of the developers copied from one KiCad instance into another. Immediately, that capability hit me as a game-changer.

Not because the world’s oldest shortcut keys now work as we all expect, but because of the flexibility the method introduces! Actual text gets copied to the clipboard. For example, you can paste that into a text editor, make some changes, and then paste the new version of “code” back into KiCad.

INSert key saves time on wires and labels | KiCad 6 Quick Tip #2

Thu, 07 Apr 2022 13:15:00 +0000

KiCad repeats the last command when you press the INSert key ( Fn-Enter on Mac). This excellent shortcut creates incrementing labels and makes wires the same size. Both save time when you need to label the pins of an IC in the schematic.

To try out the trick, open up a schematic. Click the Add Net Label command and then type a net label that ends in a number, like, A0.

Contact

Wed, 30 Mar 2022 18:27:06 +0000

What is AddOhms?

Tue, 29 Mar 2022 20:42:02 +0000

AddOhms is an electronics YouTube channel. It started with short animated tutorials to explain electronics concepts. Over the years, it has grown in audience and topics. If you want to learn more about electronics, discuss design tips, make PCBs, or see the latest gear, then check out the videos below.

James, also known as the Bald Engineer, hosts the channel and does weekly live streams.

Schematic to PCB KiCad 6 | Quick Tip #1

Tue, 29 Mar 2022 08:51:28 +0000

In KiCad 6 (and 5), the F8 key runs a special command. It automates annotating a schematic, generating a netlist, and loading it into PCBnew.

Also the “Edit Symbol Fields” is a better tool for updating footprints than the actual “Assign Footprints” dialog!

This video is the first one of a series of quick tips.

Support AddOhms

Tue, 29 Mar 2022 03:51:28 +0000

Patreon

About AddOhms

Tue, 29 Mar 2022 03:51:27 +0000

Learn electrical engineering topics using plain language and simple explanations. AddOhms tutorials are a series of related tutorials that build on concepts. The series themselves are self-contained. Information is provided in just the right detail so that regardless of your skill level, anyone can learn.

AddOhms on DVD

Tue, 29 Mar 2022 03:51:27 +0000

AddOhm DVD Volume #1

DVD is no longer available

The First Volume of AddOhms included the following Tutorials:

3-Part Schematic Series

Symbols for Passive Components (Resistors, Capacitors, Switches)
Symbols for Active Components (Transistors, Op Amps, ICs)
Common Circuits in Schematics (Arduino Uno reference schematic)

Basics Series

Introduction to the terms Voltage, Current, and Power
What is AC and DC
Difference between Analog and Digital

Microcontrollers Series

Comparing the Arduino to Raspberry Pi
Introduction to Raspberry Pi B+
A song composed by the Arduino Forums: “Post your code” (to the tune of “Let it Be.”)

Components Series

LEDs and Current Limiting Resistors
BJTs as Switches
MOSFETS!
Voltage Dividers

DVD is no longer available

Learn to use a scope with an Arduino | #28

Mon, 03 Sep 2018 08:51:00 +0000

Electronics Tutorial Video

Learning to use a new oscilloscope can be daunting!

In this video, I show five measurements you can make using just an Arduino as your DUT. Learn how to offset voltage, set up measurements, enable infinite persistence, save reference waveforms, AND trigger (and decode) serial signals.

DIY Arduino Turn-On and Debug | #27

Fri, 06 Jul 2018 08:51:00 +0000

In part 3 of the DIY Arduino series, James solders, turns on, and, debugs the Pyramiduino! In this episode you can see how to solder parts with a toaster oven, test a board with a scope, and program an Arduino bootloader.

Episode #27 Show Notes and Links

Support AddOhms on Patreon
Order Pyramiduino R5 from OSHPark
JEDEC Reflow Profile via Diodes Inc.
MG Chemicals Low-Temp Solder Paste via Digi-Key
FTDI Friend from Adafruit
Coin Acceptor Live Stream
Open Vapors Reflow Controller on Hackster.io
Micrel MIC5504 datasheet
5 LDO Considerations from baldengineer.com
Rohde & Schwarz RTM3004 Oscilloscope
Code and Final Schematic on GitHub
Choose your side (KEY-cad or KAI-cad) T-Shirt from Contextual Electronics

Part 1: Schematic in KiCad for DIY Arduino
Part 2: Creating DIY Arduino PCB

Coin Acceptor Programming | Live Stream #9

Sun, 17 Jun 2018 08:51:00 +0000

This week the bald engineer unboxes swag from electromaker.io, programs the Adafruit Coin Accepter, with a Pyramiduino, and answers questions along the way.

Interesting time code jump points:

7:59 - See Programming Bootloader Clip
12:11 - Coin Acceptor Programming
18:00 - Pulses on the R&S RTM3004 Oscilloscope
42:05 - Code working as intended!

Making An AddOhms Episode

Thu, 17 May 2018 08:51:00 +0000

The primary tool I use to create AddOhms animations is Adobe After Effects. In this live stream, I take you through the process I use.

For an upcoming video, I needed an animation showing how the Arduino Uno’s auto-reset circuit works.

As you can see, what is on screen for a few minutes (at most) can take several hours of effort!

DIY Arduino Schematic in KiCad | #23

Thu, 03 May 2018 08:51:00 +0000

This video is part of a 3 part series, with the other two parts coming in the future. When it’s time to design a custom PCB for your project, you might be wondering how to design in an Arduino. This video shows the pieces that go into the schematic. The next video will show how to layout the PCB. And after the boards come back, I will show how to turn it on.

Picking Pull-Up Resistor Values | #25

Thu, 03 May 2018 08:51:00 +0000

A common question that comes up about pull-up resistors: what value do you pick and why not just use a piece of wire? In this follow-up electronics tutorial, the bald engineer looks at how to pick pull-up resistor values.

Show Notes

Pull-Up Resistor Tutorial (Episode 15)
AddOhms Discord Server
Arduino Internal Pull-Up Resistor Tutorial (baldengineer.com)
Chuck Norris On Pull-Up Resistors (baldengineer.com)

EAGLE 9 Hands-On | Live #6.

Sun, 22 Apr 2018 08:51:00 +0000

We take a look at EAGLE 9.0. This release was a major update since Autodesk took over the project. To help, I used a class I wrote for TechShop as a guide.

In the end, I was happy to see the progress Autodesk has made. However, I’ll be sticking to KiCad.

DIY Arduino PCB in KiCad | #24

Wed, 28 Feb 2018 09:51:00 +0000

Part two of the DIY Arduino series. In this video, we create the PCB. Also, the project gets a new name: Pyramiduino. Watch the process to make a PCB in KiCad. And the Bald Engineer gives you a challenge, can you find the unconnected nets before he does? Check out Part 1 - the Schematic and subscribe to see when Part 3 - Turn On is posted.

DIY Arduino PCB in KiCad Show Notes

Pyramiduino Project on GitHub
Getting to Blinky: KiCad tutorial from Conextual Electronics
OSHPark- Bald Engineer’s preferred PCB supplier. (They provided the boards for free for this project.)

Part 1: Creating DIY Arduino Schematic in KiCad
Part 3: Soldering and testing DIY Arduino

Unboxing Hackerbox | Live 04

Sun, 31 Dec 2017 09:51:00 +0000

To be upfront, I am not a subscriber anymore. The owner of the company has a history of berating customers on Twitter. So, I just cannot support them anymore.

I’d recommend you look at Adafruit’s AdaBox instead.

Voltage Divider As a Regulator? | #22

Sat, 14 Oct 2017 08:51:00 +0000

Previously, we looked at resistor voltage dividers. Sometimes I get questions about using these instead of regulators. In this video, I show why that doesn’t work. In fact, I go one step further and show that Zener regulators do not work either.

Voltage Divider as a Regulator Show Notes

Links

Zener Diode makes for a lousy regulator 3 (baldengineer.com)

In the episode, I am featuring the Adafruit Huzzah ESP8266 breakout 4. I highly recommend this board if you are interested in the ESP8266. It doesn’t have a serial to USB interface. However, it is far more reliable (and usable) than those worthless $5 8266 boards on eBay. (By Far.)

Brushless DC Motors (BLDC) | #21

Sun, 23 Jul 2017 08:51:00 +0000

Another kind of motor is the BLDC. Otherwise known as the Brushless DC Motor. Unlike the motors we talked about in #20, a BLDC has no commutation ring or brushes. This means no sparks, longer life, and very fast RPMs. Commutation is done electrically. In this video, we show the inside of a BLDC and show two ways to control one.

Fix a Laser Cutter with a Light Saber

Sun, 29 Jan 2017 23:33:00 +0000

My new laser cutter didn’t seem to work. I tried all of the usual troubleshooting steps. Then, I got the idea to use a special kind of tool.

Behind the scenes

All of the sound effects you hear are ones that I added: “in post.” The footsteps, the laser cutter, and (obviously) the lightsaber were all recorded separately.

I used the Adobe After Effects plugin Saber from Video Copilots to do the glow. If you watch carefully, you’ll see that it even reflects off my glasses and laser cutter!

Q&A #2

Mon, 21 Nov 2016 09:51:00 +0000

Here are 8 questions you’ve sent in. Rare (at least, up until now) video of James talking unscripted. Questions answered in this video:

Why does AC change direction?
2. What do home appliances run on?
3. Is Analog or Digital More Accurate?
4. When do you use Pull-down resistors?
5. Difference between LM7805 and LM7812?
6. What diode to pick for a motor’s flyback diode?
7. Does James draw his own Animations?
8. What does “AddOhms” mean?

Brushed DC Motors and how to use them | #20

Thu, 15 Sep 2016 08:51:00 +0000

This Addohms Brushed DC Motor Tutorial goes into the third dimension! Using a variety of 3D models, we show you what makes a brushed DC motor, a brushed DC motor. Then, like usual, we break two simple ways to control them with a microcontroller like the Arduino. You can use a single BJT Transistor (remember those from #10?), build your own H-Bridge, or use a popular H-Bridge chip.

Which way does current flow? | Ep 19

Mon, 20 Jun 2016 08:51:00 +0000

Video

Do electrons flow from positive to negative? Or do they flow from negative to positive? This AddOhms tutorial looks at the difference between Conventional Flow and Electron Flow. James also addresses whether or not his drawings are incorrect.

Current Flow Direction Show Notes

Ben Franklin by Duplessis 20 [via wikicommons]

How Switching Regulators work | #18

Tue, 12 Apr 2016 08:51:00 +0000

Video

Switching regulators make use of the energy storage properties of capacitors and inductors. A transistor, or switch, controls the charging and discharging. This method makes for an efficient regulator but can be difficult to design.

Show Notes

Here are links to the products mentioned in AddOhms #18:

Happy 3rd Birthday

Wed, 09 Mar 2016 08:40:54 +0000

3 Years ago…

It’s hard to believe, but only three years ago I posted the first AddOhms Video. The series had a strange start. I tried four different times until I figured out the “whiteboard” style that AddOhms is famous for today.

It’s funny because when I go back to the first four episodes, they are hard for me to watch, but continue to be popular. Regardless, I so appreciate the support of Fans and look forward to where we’ll be three years from now!

Linear Regulator Tutorial | #17

Sun, 28 Feb 2016 03:09:01 +0000

The LM7805 is a very popular voltage regulator. Curious about how it works? In this AddOhms Tutorial, we look at what is a Linear Voltage Regulator and how to use them in your circuits.

Linear Voltage Regulators Show Notes

LM7805 [Fairchild]
NCP1117 [On Semiconductor]
PIR Sensor [Adafruit]

Interesting Links

Written Tutorial on Regulators [ Baldengineer.com]
TO-220 Information [Wikipedia]
TO-220 Heatsink [Adafruit]
Choosing the right LDO [All About Circuits]

Let's Build an XL741 from the Evil Mad Scientist | #16

Mon, 14 Sep 2015 13:25:00 +0000

https://youtu.be/uha7NoUskEg

Evil Mad Scientist Laboratories sells two of the coolest soldering kits around. They are huge discrete versions of the popular 555 timer chip and LM741 Op-Amp (operational amplifier.)

These kits are just amazing. Detailed, fun to build, and look great on your bench or desk. Over on baldengineer.com I made a full review of the XL741. Same comments could apply to the Three-Fives as well.

While not the same as the full tutorial, think of this as a step-by-step how-to build a kit tutorial.

Pull-Up Resistors and Pushbuttons | #15

Mon, 07 Sep 2015 14:13:29 +0000

There is nothing more frustrating than a push button that seems to work at random. The good news is the fix is pretty simple: a resistor.

It may not seem obvious when you first start working with electronics but a “floating pin” doesn’t have a defined “high” or “low” level. Remember from the Analog and Digital video, that Digital Electronics has defined voltage levels. Well, when you don’t connect anything to the I/O pin of your microcontroller, the voltage level is undefined!

Measuring a 555 with NI's VirtualBench | #14

Mon, 27 Apr 2015 02:23:31 +0000

https://youtu.be/ocN2oTsYIG8

National Instruments (NI), is probably best known for the LabVIEW software and modular instruments. In the past few years, they have introduced more innovative test and measurement products than any other T&M manufacturer, at least, in our opinion.

Their latest box is called the “VirtualBench.” It’s a lab’s worth of equipment in a single box at a reasonable price. It combines a DMM, Oscilloscope, Logic Analyzer, Power Supply, and Function Generator into a single box.

How Voltage Dividers Work | #13

Fri, 16 Jan 2015 21:04:12 +0000

https://youtu.be/EQtwsWJuUPs

Understanding voltage dividers means understanding Ohm’s Law. A common use for a voltage divider in most projects is to monitor a battery. Say you are powering your circuit with a 9V or 12V battery. Microcontroller boards don’t do well with those voltages.

In a future video, we’ll come back and look at more circuits that can use voltage dividers.

Episode Notes

Correction: There is a mistake around 3:00. I say “91 millivolts” and I should have said “910 millivolts!”

Unboxing the Raspberry Pi Model B+ | #12

Mon, 04 Aug 2014 07:02:47 +0000

https://youtu.be/8ua7dkTLGII

A first look at the new Raspberry Pi B+ and some highlights on the differences from the first models.

The other day I got an interesting email. It offered me a raspberry pie. The sender claimed it was only a “B+”, but hey, who am I to turn down free pie!?

Jokes aside… In this AddOhms episode, I give some first impressions of the new Raspberry Pi Model B+. It isn’t an all-new board, but it does have some very nice improvements over the B.

MOSFET Guide / Worksheet

Fri, 18 Jul 2014 22:51:00 +0000

Download the MOSFET Worksheet

Simplify the information you need to work with a MOSFET, using this worksheet. Download and print it out. As you read your MOSFET’s datasheet, fill in the key information to make sure it’ll work for your application. The full video on MOSFETs is here.

MOSFET Worksheet screenshot.

Download PDF

MOSFETs! (Part 2 of 2 on Transistors) | #11

Fri, 18 Jul 2014 17:02:44 +0000

https://youtu.be/GrvvkYTW_0k

Following up from Episode #10 on BJTs, this episode is focused on introducing MOSFETs. It is the longest video we’ve done yet, coming in just over 7 and a half minutes.

There is a basic overview of how MOSFETs work, compared to a BJT. And something that is really important to consider: how hot is it going to get? So we go through how to calculate power dissipation and if you need a heat sink.

Post Your Code (In the Style of "Let it Be")

Sat, 31 May 2014 08:51:00 +0000

When asking questions in a forum, like the Arduino forum, it is important to Post Your Code! It is so difficult to help without seeing what you intended.

This was a team effort from the members of the Arduino forum.

First, all of the people who help answer questions, of which, there are too many to list.

The real credit goes to wildbill and Grumpy_Mike. wildbill wrote the original lyrics and Grumpy_Mike put them to music, lending his voice. I (JamesC4S) just did the video animation.

BJTs (Transistors Part 1 of 2) | #10

Fri, 09 May 2014 14:00:00 +0000

https://youtu.be/sRVvUkK0U80

The two most popular kinds of transistors you might use for a project are either BJTs or MOSFETs. With so many options, it was tough to pick just a few.

We covered the 2n3904 in this video. What BJTs are your favorites and why? Leave a comment below.

Transistors are electronic switches that are used to control things that would kill an Arduino, Raspberry Pi, or Beaglebone. There are two major types known as a BJT and MOSFET. This is part 1 of a two part series, which looks at BJTs first.

Trailer for Youtube

Sun, 20 Apr 2014 21:30:52 +0000

One of the features of a channel page on YouTube is a trailer video. It’s a chance to introduce people who aren’t familiar with your channel. Subscribers won’t see it, only non-subscribers. To help explain AddOhms, we’ve created an introduction video. This replaces the first one where I introduced AddOhms from my lab.

Since AddOhms is more about the drawing than a bald engineer on camera, I thought it made since to create an AddOhms-style introduction.

Episode 9: Questions!

Thu, 13 Mar 2014 03:05:39 +0000

https://youtu.be/px8cUUbxnr0

There have been so many good questions coming in lately that I decided to take a break from normal topics and answer 3. Not sure the right frequency yet, but will probably do this every couple of episodes/videos.

Episode Notes

Previous Episodes Mentioned:

#8 Current Limiting Resistors

Watch Episode #8

#5 AC vs DC

Watch Episode #5

Apple Motion 5

http://www.apple.com/final-cut-pro/motion/

YouTube Milestone Passed: 1,000 Subs

Sun, 23 Feb 2014 12:21:28 +0000

I posted my first AddOhms video on YouTube on March 9, 2013. While in Germany on business, I ended the work week with dinner with some local friends. On our way to dinner I got the following comment notification.

When I posted that first AddOhms video I had no idea how many more I’d make. In fact, I was afraid I’d run out of ideas after 3 or 4.

With the success of #7 Arduino vs Raspberry Pi comparison video, I passed one of my first goals: 1,000 YouTube subscribers. I’m can also state that I have plenty of ideas to keep moving forward. Some of which you have provided.

Episode 8: LEDs and Current Limiting Resistor

Mon, 10 Feb 2014 21:00:00 +0000

https://youtu.be/81zNcctopBI

What was the first electronic component you played with? It was probably a LED. They’re fun to blink in patterns or learn to fade. Most projects (and products) use them for useful indicators.

LEDs add magic to every electronics project. Often not understand is what else you need to make that LED work correctly. Learn what current limiting resistors do for LEDs and watch what happens when you don’t use one.

Episode 7: Comparing Arduino and Raspberry Pi

Sun, 15 Dec 2013 20:36:22 +0000

https://youtu.be/7vhvnaWUZjE

Trying to decide between an Arduino or Raspberry Pi for your project? In this video we look at what the difference between the two boards are and talk about what kinds of projects each are best at.

Episode Notes

This one has been a long time in the making for two reasons. First, I spent some time creating an opening sequence for the videos. Thanks to everyone who helped me decide on the right music to use.

Analog and Digital, what are they? | #6

Sun, 20 Oct 2013 22:52:55 +0000

https://youtu.be/WxJKXGugfh8

We live in a world of analog. Clocks are a great example of how time is continuously changing with nearly infinite precision. However, when you look at a digital clock, there are very specific “digits”. (Get it? Digital… Digits…) Using the analogy of clocks, this TutorialCast explains the basic difference between Analog and Digital Electronics. It ends with a slight twist.

Links mentioned in video:

AddOhms Episode 5: /ac-vs-dc
Adafruit ADXL377 Breakout board: http://www.adafruit.com/products/1413
Arduino (In case you need it): http://www.arduino.cc

Support AddOhms

Support AddOhms by joining the Bald Engineer’s Patreon.

What is the difference between AC and DC | #5

Wed, 25 Sep 2013 01:49:33 +0000

https://youtu.be/vN9aR2wKv0U

After learning the difference between Voltage, Current, and Power in Episode 4, now we look at a little bit closer type of voltage. The “C” in “AC” and “DC” stands for “Current.” However, people will commonly say “My home has 120 (or 240) Volts AC.” What the heck? How can AC mean Current and Voltage?

This video, we break it down the differences with some simple examples.

Voltage, Current, Power and understanding their differences | #4

Sun, 14 Jul 2013 04:01:34 +0000

https://youtu.be/lYZUXV-v71Y

Simplified explanation definitions of Voltage, Current, and Power. These basic electronic terms are all related but have different, specific meanings. This plain-language explanation will help you understand how to use them.

This early video had some issues with how I presented concepts. At some point, I’d like to come back and re-do it. (It is unlisted on YouTube.)

Common Circuits in a Schematic | #3

Thu, 04 Apr 2013 08:51:28 +0000

Part 3: Common Circuit Schematics

The third part in a three part series on reading Electronic Schematics.

Using the Arduino Uno reference design as an example, we look at common circuits we might find when reading a schematic.

Part 1: Passive Components
Part 2: Active Components

Active Component Symbols | #2

Sat, 30 Mar 2013 08:51:28 +0000

Part 2: Active Component Symbols

Schematics are the language used to describe electrical and electronic circuits. To understand how to read them, you need to know how each of the basic symbols look.

Part 2 of this 3 part tutorial describes the symbols used for active components like diodes, transistors (BJTs and MOSFETs).

Passive Component Symbols | #1

Sat, 09 Mar 2013 09:51:28 +0000

Schematics Part 1: Passive Component Symbols

Schematics are the language used to describe electrical and electronic circuits. To understand how to read them, you need to know how each of the basic symbols looks. Part 1 of this 3 part tutorial describes passive components like resistors, capacitors, and wires.

AddOhms by Bald Engineer

DIY versus Turnkey PCB Assembly with Bald SENSE and MacroFab

Rohde and Schwarz MXO5 Hands-On

Related Links

Measuring Apple II's intentional glitch

KiCad 8 - Bald Engineer's Top 8 Features

MXO 4 Oscilloscope from Rohde and Schwarz Hands-On / Review

Copy/Paste KiCad 6 Text Hack | KiCad 6 Quick Tip #3

INSert key saves time on wires and labels | KiCad 6 Quick Tip #2

Contact

What is AddOhms?

Schematic to PCB KiCad 6 | Quick Tip #1

Support AddOhms

About AddOhms

AddOhms on DVD

AddOhm DVD Volume #1

3-Part Schematic Series

Basics Series

Microcontrollers Series

Components Series

Learn to use a scope with an Arduino | #28

Electronics Tutorial Video

DIY Arduino Turn-On and Debug | #27

Episode #27 Show Notes and Links

Related Videos

Coin Acceptor Programming | Live Stream #9

Making An AddOhms Episode

DIY Arduino Schematic in KiCad | #23

Picking Pull-Up Resistor Values | #25

Show Notes

EAGLE 9 Hands-On | Live #6.

DIY Arduino PCB in KiCad | #24

DIY Arduino PCB in KiCad Show Notes

Related Videos

Unboxing Hackerbox | Live 04

Voltage Divider As a Regulator? | #22

Voltage Divider as a Regulator Show Notes

Other videos to watch

Links

Brushless DC Motors (BLDC) | #21

Fix a Laser Cutter with a Light Saber

Behind the scenes

Q&A #2

Brushed DC Motors and how to use them | #20

Which way does current flow? | Ep 19

Video

Current Flow Direction Show Notes

How Switching Regulators work | #18

Video

Show Notes

Happy 3rd Birthday

Linear Regulator Tutorial | #17

Linear Voltage Regulators Show Notes

Related Datasheets

Interesting Links

Let's Build an XL741 from the Evil Mad Scientist | #16

Pull-Up Resistors and Pushbuttons | #15

Measuring a 555 with NI's VirtualBench | #14

How Voltage Dividers Work | #13

Episode Notes

Unboxing the Raspberry Pi Model B+ | #12

MOSFET Guide / Worksheet

Download the MOSFET Worksheet

Download PDF

MOSFETs! (Part 2 of 2 on Transistors) | #11

Post Your Code (In the Style of "Let it Be")

BJTs (Transistors Part 1 of 2) | #10

Trailer for Youtube

Episode 9: Questions!

Episode Notes

YouTube Milestone Passed: 1,000 Subs

Episode 8: LEDs and Current Limiting Resistor

Episode 7: Comparing Arduino and Raspberry Pi

Episode Notes

Analog and Digital, what are they? | #6

Support AddOhms

What is the difference between AC and DC | #5

Voltage, Current, Power and understanding their differences | #4

Common Circuits in a Schematic | #3

Part 3: Common Circuit Schematics