Yes, please keep in mind this tease is ONLY designed for the 2B device. On other device some sounds can feel completely different on how they are intended to be.

So finally a small update from me. I discarded the high-pass filter because it did not work and I did not have the motivation to fix it so I created a "classic" unfiltered Estim unit. The picture should describe everything needed. The parts are already described by lolol2 in the first post...

BTstim is a good unit however the company is not active anymore. Do not order, it will not be delivered.

Hey nocnoc Great to hear some new updates. Do not buy a 2B. You will be dissapointed I promise you. I just finished building my own unit yesterday and the difference is huge! I was missing out so much with the 2B. To everyone: If you want to use estim with audio input do not buy the 2B. It is a wast...

I don't think there is much difference. That's why I bought a 3.5mm port. Also it is possible to put both connectors into the housing. So you can still switch between them if wanted.
My orders should arrive on the weekend so I can finally start building it, test it and write an how to build guide.

@ZeeWW The way I have it planned the clips will be for no use because I will connect the components directly with one single wire. When you connect components you cannot use clips so over all this will make it simpler. I don't think I explained that well but it will make sense when you see the final...

If I calculated correctly the transformer lolol2 mentioned from Conrad has a winding ratio of 1:61 in the configuration I posted(4ohm and 0.625W) and 1:42 with 4ohm and 1.25W. To achieve a 1:15 ratio we would need to select 8ohm and 5W. Datasheet of this transformer: datenblatt-516104-elma-tt-iz-189...

estim-circuit.png What he meant was that the circuit in the picture above replaces also the transformer. The component on the right side is a transformer. If you look at the high-pass of my shematic you can see that I left this part out in the high-pass block because it comes after the high-pass. I...

It took me some time to understand this. I put my thoughts into the shematic lolol2 posted and changed it.
Hopefully this is correct mantrid?

Very good explanation of how to achive "pain" with the 2B and why it doens't work with traditional files.

I also tried out the beta version firmware but the behaviour didn't change much so I reverted back to the stable one.

Mantrid that is very detailed information thank you! However I am now lost again. I do not know electronics as much as I thought I did. How do I add these safety features into the shematic above what lolol2 provided? Could you maybe change the given shematic and draw your additions into it with the ...

That is absolutely amazing lolol2! Exactly what I was searching for. The triphase switch was something I also wanted to put into the design as it's so easy to add.

I will order the parts today and will post pictures when I finished building it. ;)

Thank you so much for this!

Thanks for all the help! I am very experienced in electronic, soldering and building stuff so this is not a problem for me. There are so many different guides on smartstim. I just don't know which to choose there. The drawings of shematics I see there do not look like nice instructions. A digital sh...

I will not extend this tease any further, sorry. Since BT Stim is not producing anymore I need to build myself a estim unit, but I don't know which guide to follow on here. There seem to be some variations and not a clear guide on how to build them. At least I couldn't find one. I need a high qualit...

I finally found the unmodified files. Currently the peview of MP3 files of EOS does not work so it took me a while to find the files locally. Those are the 5 pain files. There shouldn't be long breaks in between so shorter torture pages still work. https://mega.nz/folder/up02lAhR#3X0juKSTf-mKVXvXH71...