you have a GND jack on the faceplate? just curious why? I love it and will build it
Hi there,
I didn’t create the design, just made a stripboard out of it. I have no idea why GND is on the plate. You can ask the editor on youtube, the link to it is above. He is nice and also answers.
Good work ! just maybe it would be good to add the name/title (ex “ISD1820 sampler …”), and the source (Casper Electronic I believe), directly on your image.
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just put in one rec and one trig jack for all 4 chips? or will it hold for 4 rec and 4 trig , also the Main out B100k is the summed of the 4 100k pots off the 4069 inverters
and the the main out pot goes to the filter rc network as a A100k pot with .33uf cap? Great project just curious . thanks
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…I have to say one more thing, if you build it all on a metal or aluminum plate, make sure that the microphone socket has NO contact with the metal, because this plate is connected to ground! It was best to do that later, using a socket with a plastic housing!
There’s again no source/credit on your new pic
Without those who create the schems all constructions would be more complicated, the minimum is to name it
plz 
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My source where I got it:
…and the associated schematic download:
Here is the absolute origin:
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I was talking about putting the source on your image, because if someone downloads the image in a search on the net (without falling on the forum with the explanations) he will have no information
It’s Casper Electronics who is behind this project
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…I don’t have any other sources, I got my information from those I mentioned above! I have drafts for the stripboard, I’m the source, sorry I can’t offer more!
Basti’s page shows the construction proposed by Casper Electronics, one or the other as you wish, but please add it to your stripboard images already posted on this thread
look at this one
Name + schematic source + layout by …
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I think whoever has read this page carefully now knows who did what, unfortunately I don’t have time at the moment to add the source and designer to the pictures, I’m at work, maybe I’ll do it again!
I’m giving up 
…that’s perfectly okay, have a nice day!
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I’ve built this one a while back. However, I never managed to get rid of that “click” every time it loops or is triggered. Any solution?
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Unfortunately, the clicking can not be eliminated, since the 1820 chip immediately shuts down to sleep after triggering in order to work in a battery-friendly (energy-saving) way. When you trigger it, full voltage is immediately available again, and then the cracker occurs. You could try whether it works a little better with a battery!
Nice! I’m trying to make my own for my kids. I have some questions: How many batteries are you using?
Have you used a bigger speaker?
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no, just normal speaker and I think it was 3 AA Batteries, but not sure about that.
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