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Its called CRUMB but I must warn you: it's VERY limited so it isn't good for too much things. At least it's cheap.

You can go without a capacitor, it should work without, but you might experience some bugs or unexpected behaviour if you drive it too fast.

I would disagree - respectfully. I would call it an adequate solution; as it can deal with the thermals of this small IC, but definitely not a nice solution IMO. A proper sized metal extrusion heatsink would cost a dollar or maybe less - that would have been a more proper, less hacky solution than ribbon wiring the IC down from the PCB.

@@francisstudiosengineering the reason it is a proper heat sink: "I would call it an adequate solution; as it can deal with the thermals of this small IC"

By proper I really meant an aluminium (or whatever other metal) heatsink as it's custom in HIFI amps; maybe mounted on the PCB. Something that does not just work, but there is a little bit more design invested into it. These were my expectations, but the reality was a little bit underwhelming, so that's the reason why I would phrase it as "non proper".

You are not the only one :) 4:17

Thanks!

It weighs 400gs w/o the batteries. I'm not aware of what kind of batteries does this device uses; i reckon something proprietary lead acid brick, but there is not much info on the Internet about this. I could not showcase how precise the measurements are on this, cuz I don't have a bench multimeter to compare it with. And comparing it with my handheld multimeters - it does not make much sense, because they aren't really high end, precisely calibrated instruments either. Thanks for the feedback tho. Appreciate it :)

@@francisstudiosengineering Thank you :) keep it up!

There is a video on my channel about the 74HC595 shift registers.

th-cam.com/video/SySISUl2mJ4/w-d-xo.html

Hi, thanks for the nice feedback. I appreciate it :) All the best from Hungary :)

I'm glad you liked it :)

CRUMB - but it's a pretty limited app which didn't get any updates in the last one year, so for basic breadboard stuff like this it's okay, but usually it's too limited for meaningful demonstrations.

For a USBASP programmer, I assume you include a 6 or 10 pin header on your PC board or breadboard and plug the programmer into that. Is there an issue with the other things already connected to those pins?

Thank you

6:00

I wish I read this comment earlier, I burned two buttons 😅

Hmmm....I wonder why the circuit simulation s/w didn't catch that? Ah, I think I see why. The breadboard is right, it's just the schematic that is wrong.

Thank you for the interesting info :)

It's called CRUMB, but I'm not sure if I can recommend it, because it's very limited and there is no update for a year now...

I love crumb

It's quite useful and versatile ^^

Grazie! Good luck with English learning :)

Thank you for the nice comment :)

Thanks!

Thanks for the nice feedback. I'm glad you enjoyed it. Sure there will be many more episodes of the series. Hopefully I will be able to get my hands on many interesting chips that I can showcase :)

How can I help?

were wondering if you would need some custom service we provide so we can do some work together@@francisstudiosengineering

Thank you for reaching out. Currently I have everything I need in terms of PCB design and manufacturing, thank you. (If I'm not mistaken you are on behalf of PCBWay)

Glad to know. Keep up the great work.

I'm glad to hear.

Thank you! I'm glad you enjoyed it.

Thank you! 😄

Yes and No. You need a resistor for each one of the LEDs if you want to keep their brightness consistent and these sort of jazz. But for a test application like this, one resistor is well enough. You won't even notice the difference in brightness and none of the LEDs are threatened with burning out.

KiCad - it's an open soruce pcb design cad software. I can recommend it.

Unfortunately I do not. I didn't plan this device ahead of time - just built it as it goes. And the only schematics I made, are in the video.

@@francisstudiosengineering 😔 So it can't be reproduced except from guess work

You can easily reproduce it. It's pretty simple. I use BC182A NPN transistors - I included the detector circuit diagram in the video and also all connections are shown on the breadboard as well. So instead of the one LED and resistor you can connect the VU meter module - just have to match the polarity. The on off switch is right after the battery and the potentiometer is between the detector circuit output and the VU meter circuit input. The potentiometer is connected to the positive (VIN) rail and basically that's it. I hope this helps. If you have any further questions feel free to reach out. I will try to answer ;)

To be sure, check the datasheet of your exact model, some variations may work on other voltages, but if you have 74HC595 or SN74HC595(N) then yes these can work with 3.3v supply. Edit: sorry I haven't noticed the "only" at first. So you can use it in a range of voltages... 3.3v or 5v and if your model supports 2v - 6v you can choose the voltage that's the most suitable for your circuit from this 2-6v range. But usually 3.3v or 5v is the standard (for compatibility with other ICs and devices)

It was done only for visibility purposes - to highlight the important part for the viewers (but I have mentioned this detail in the video)

Thank you for letting me know. I know that the cap should be as close to the pins as possible, but for easy understanding I routed close to the input power - so people can learn it in blockified patterns. It also helped me learn everything from languages to programming and electronics. But yeah. I admit that I failed to call out the importance of placing it right next to the IC power input.

It gets worse, if you attempt to load this shift register at the full clock rate (25 MHz). Without a ground plane you will get flakey operation.

Thank you for the suggestion. I will try to take a look at that IC. It sounds very exciting 😃 and might be very useful for my future projects

Will do that. Unfortunately this is the set I have for a while, and so far it kinda worked, but yeah... Could use some improvement 😅