#72 Making the invisible visible: Tools for debugging and re-engineering electronic designs

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In this video I show tools to find out, how a unknown electronic device works. I start with a Multimeter, continue with a Digital Storage Oscilloscope (DSO), and end up with a modern Logic Analyzer.
The goal is to build an enhanced electronic load with a nice touch display and data logging. Could have used an Arduino, but decided to use an ESP8266 because I wanted to have a wireless connection on the bench. And maybe, we will be able to replace the display with a web interface?
Links:
Review of used electronic load: • Voltlog #38 - 60W Elec...
Original Logic Analyzer: www.saleae.com/
Clone Logic Analizer: www.aliexpress.com/item/New-Ar...
Open Source software for Logic Analyzer: sigrok.org/
Electronic Load: www.aliexpress.com/item/Del-Mu...
Document: github.com/SensorsIot/Electro...

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24 июл 2024

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Комментарии : 76

@ggattsr 8 лет назад

Thanks so much for producing such interesting and educational videos. Your method of teaching is addictive. I can hardly wait for the next one.

@AndreasSpiess 8 лет назад

Thanks. I try to deliver every Thursday.

@deangreenhough3479 8 лет назад

Wow! I was able to fully understand every process and you provided a roadmap on how you did it. Brilliant! I'm so excited about your next project😀 Thank you Andreas

@AndreasSpiess 8 лет назад

Thanks! I hope, I will get it running. It is still in the works...

@asiw 8 лет назад

Wow. Another fantastic video. So illuminating and clear. The level of detail is fantastic without being overpowering. Just brilliant.

@AndreasSpiess 8 лет назад

You are very nice with me...

@jon_raymond 8 лет назад

I'm so excited for this video! Great topic! Really looking forward to the rest of this project and your video about measuring current with a oscilloscope. Keep up the great videos. I really enjoy them.

@AndreasSpiess 8 лет назад

I hope, I will get everything working as desired...

@jacquesgilbert2774 8 лет назад

Thank you for the excellent logical progression. It is most helpful that the videos explain why, not just how, to do things.

@AndreasSpiess 8 лет назад

Thanks for your nice comment!

@gripperrod 3 года назад

This is a really great well explained video showing how to go about understanding an unknown circuit. Fantastic.

@AndreasSpiess 3 года назад

Glad you liked it!

@voltlog 8 лет назад

Nice effort to reverse engineer the display part of the dummy load. I will add a link to your video in my reverse engineering video.

@AndreasSpiess 8 лет назад

+VoltLog Thanks!

@abeditani8293 5 лет назад

unbelievable fantastic way to explain and explore the way of this unit

@AndreasSpiess 5 лет назад

Indeed they are very valuable!

@UpcycleElectronics 8 лет назад

Very interesting, I am not familiar with logic analyzers, but you have peaked my interest with this project. Thanks :)

@AndreasSpiess 8 лет назад

You are welcome!

@AntonioBdeJesus 6 лет назад

What a great job man! I really liked it.

@AndreasSpiess 6 лет назад

Thank you!

@ranger81de 8 лет назад

Awesome video! Looking forward to the upcoming videos regarding current measurements with the scope and the slave i2c functionality for the esp8266. Thanks for your great videos and keep making them! Helps me a lot! Tobi

@AndreasSpiess 8 лет назад

You are welcome! The I2C slave runs already...

@rudsomlima 8 лет назад

Thanks! I'm always learning from your videos!

@AndreasSpiess 8 лет назад

You're welcome. I like that!

@DJAndresViana 3 года назад

Everything's Awesome! Thank you for share your knowledge.

@AndreasSpiess 3 года назад

You are welcome!

@NikolayAgopyan 8 лет назад

Thank you for another interesting and educational video!

@AndreasSpiess 8 лет назад

You're welcome!

@miskomisic1965 4 года назад

Another great video. Even if I knew some of these things its great to learn something more. Also same forma-mentis problem handling (this is digital so I can't decode with DSO but I have to use logic analyzer) is great. For amateur as myself this is great lesson. Thanks Andreas

@AndreasSpiess 4 года назад

You are welcome!

@bluesquadron593 8 лет назад

Very nice upload! Very logical and clearly explained as usual! Funny was to see the 50+ chrome tabs :)

@AndreasSpiess 8 лет назад

These are somehow my memory...

@bvtg7470 8 лет назад

Excellent video! Thanks

@AndreasSpiess 8 лет назад

You're welcome

@Hasitier 8 лет назад

Interesting video. I also have this dummy load and the mod you are trying sounds interesting. I am looking forward to the next Episode of this video. Grüße aus Deutschland Michael

@AndreasSpiess 8 лет назад

So, I have to hurry up... I just ordered the PCB at Osh Park.

8 лет назад

Very very good! I immediately ordered a Nextion display, so I can rebuild Your mod. I like Your swiss accent. Grüße aus Oberbayern

@AndreasSpiess 8 лет назад

So, I have a few days to complete my work...

@RubenLensvelt 8 лет назад

A first class video once again. I think your teaching skills are at university of applied sciences level. My professors of the time could take your example. Chapeau!

@AndreasSpiess 8 лет назад

+Ruben Lensvelt Thanks! I taught at this levels from time to time, too ;-)

@dl8cy 8 лет назад

as allways it was useful and interesting in the same time! :-) Many thanks for you educating videos!

@AndreasSpiess 8 лет назад

Thanks! Glad to hear that¨it is useful.

@pcbreflux 8 лет назад

Thank you for your time and effort. And thanks for the tip of the cheep logic analyzer. Don't know that the prices were that low for 8ch.

@AndreasSpiess 8 лет назад

It is really nearly unbelievable.

@chuxxsss 8 лет назад

Keep up the good work.

@AndreasSpiess 8 лет назад

Thanks!

@DenysSene 8 лет назад

really great... I 'm also trying to find a cheap alternative to a Scalar NEtwork Analyzer to measure my ham radio antennas, like a KC901H, but I don't need all that and It's too expensive for amateur usage.

@AndreasSpiess 8 лет назад

This is a different topic and I think, there are some videos around for this topic. They use a noise source, a directional coupler, and a SDR radio. But still, not really cheap...

@janakaaluthge 5 лет назад

Great another one, thanks!

@AndreasSpiess 5 лет назад

You are welcome!

@cyo_corner 4 года назад

friend, this is very helpful. How do I implement these findings? so if I use logic analyzer to read a BUS, how do I program a new microcontroller with that same code that you read from logic analyzer?

@AndreasSpiess 4 года назад

I am a RU-vidr and share my knowledge here.

@symik3 8 лет назад

That amount of opened windows :D Great topic!

@AndreasSpiess 8 лет назад

+Krisztián László Simon And in addition I use three 27" screens ;-)

@symik3 8 лет назад

Wow, awesome :D

@oskimac 8 лет назад

useful and interesting

@AndreasSpiess 8 лет назад

Thanks!

@pepper669 8 лет назад

That's very nice! Similarly, it wold be nice to improve a cheap adjustable low voltage power supply.

@AndreasSpiess 8 лет назад

I will build something like that in the near future.

@bryanst.martin7134 5 лет назад

I think those numeric displays are Serial. Without decoder chips on the board, I presume no other option. I found similar units on Digikey.

@AndreasSpiess 5 лет назад

Maybe you are right. I abandoned the project long time ago :-(

@arthurmorgan8966 2 года назад

7:44 I bought this logic analyzer before seeing this video, it’s yet to be delivered. Which software to use then?

@AndreasSpiess 2 года назад

Saleae software works but legally is not allowed for clones. Sigrock Pulseview is open source.

@arthurmorgan8966 2 года назад

@@AndreasSpiess thanks. That makes me wonder if this software pings home, like Solidworks does. If it’s a domain connected computer, they know it’s not home use and then you will hear from their sales/litigation team.

@arthurmorgan8966 2 года назад

@@AndreasSpiess on another note I was thinking, to understand how oscilloscopes work better, maybe one way is to implement a simple one (not an actual use one). Do you think one can be made with something like ESP32?

@AndreasSpiess 2 года назад

Microcontrollers usually are too slow to build oscilloscopes.

@arthurmorgan8966 2 года назад

@@AndreasSpiess yeah sampling rate will be bad. I was thinking like Bitluni’s recent oscilloscope project.

@LearningToFly77 8 лет назад

Hallo Andreas, ich verfolge schon einige Zeit deine Interessanten Videos, vielen Dank dafür! Leider verstehe ich noch nicht alles und muss noch viel lernen ;-) Habe Feinmechaniker gelernt und mich als Hobby viel mit Arduinos und Raspberry beschäftigt. Deshalb wollte ich fragen, ob du mir ev. ein Buch oder eine Webseite, Videos empfehlen kannst um die Grundlagen der Elektrotechnik zu lernen? Für einen Tip wäre ich sehr dankbar... Hast Du eigentlich keine eigenen Webseite? Gruss aus dem Berner Oberland ;-)

@AndreasSpiess 8 лет назад

Da ich in meiner Jugend eine Einführung in die Elektronik genossen habe weiss ich keine bestimmte Seite, die einen Kurs anbietet. Ich verwende jeweils Google, um meine spezifischen Fragen zu beantworten. Das Buch, das viele als das beste Elektronikbuch bezeichnen ist The Art of Electronics (www.amazon.de/Art-Electronics-Paul-Horowitz/dp/0521809266). Das ist allerdings Englisch, teuer und dick. Da findest du allerdings fast alles (analog und digital).

@Ncky 5 лет назад

5:13 is that Katarina's Shunpo ability sound?

@AndreasSpiess 5 лет назад

???

@Ncky 5 лет назад

@@AndreasSpiess i heard noise in background like my notification sound.

@artbecker5618 7 лет назад

You can get a clone logic analyzer for $5 to $7, postpaid. The $15 shipping fee from the seller in the current link above is outrageous. But things change rapidly on this site, so just look around. It used to be possible to search for Salae on AliExpress, but that was stopped a few months ago. Now you just have to search for USB Logic Analyzer. The 8 channel 24MHz products are probably all made by the same manufacturer. The Salae software works great on them.

@AndreasSpiess 7 лет назад

Thanks for your feedback. Salae software must not be used with the clone devices (see license agreement)

@alterratz665 6 лет назад

I recommend using the cheap clones with pulseview (which is part of sigrok sigrok.org). This way you get a really affordable tool and do not steal software from saleae. Also ist is really easy to write plugins for sigrokdecode. This allows even low level protocols like I2C to be used as input to a high level analyzer, so you can easily decode information in idividual registers. Thank you for your videos. I find them quite useful. Greetings from Austria, the country without kangaroos :-)

@AndreasSpiess 6 лет назад

After the price increase of Saleae a very good alternative...