I was interested in this topic because your approach is technical interesting and has some potential. However, I see no benefits over properly tailored conventional design. (I made a spreadsheet (attached to this message ) for this purpose many years ago. Even without that spreadsheet it is much ...

I used to have regular skin irritation at the location of one of my rubber electrodes


It may be caused by short carbon fibers from conductive rubber.


I asked on discord and a few people mentioned not having skin irritation with pulse-based boxes, but skin irritation with the 2B seems more ...

I explained that already. It is more efficient, has no phase shift, and relies on a board you can actually buy for cheap. As far as I'm aware of there is no commercially available current controlled amplifier board or IC that fits our use case.


Just use a normal (voltage controlled) amplifier ...

The benefit of this design over a class A/B current driver is that it is more efficient, has low component count, and has no phase shift. The full digital approach also offers some safety benefits (imo). The benefits of current controlled designs over voltage controlled designs are numerous ...

What is the benefit of this design? You have three outputs but sum of all currents must be zero. This results in two degrees of freedom (DOF). The same can be achieved with stereo amplifier and a current controlled output driver. (For better understanding: How you want to drive 10mA on one electrode ...

I've thought about adding a high-pass filter but not sure where to place and how to size the (capacitator). I have a commercial audio amp (Fosi BT20a Pro) where I feed it into two transformers. I do have a pair of 4 ohm resistors in series between the audio amp and the transformers.
If you could ...

For years I have been preaching that low frequencies can be dangerous because they can cause electrolysis and thus denaturation of molecules. (These frequencies can also be sampling effects or caused by malfunctions such as a ground loop.) That's why I block frequencies less than about 200 Hz using ...

It's been a long time since I've looked into it, but IIRC the purpose of the parallel resistors is something to do with providing an alternative path for the current if the body resistance is too high or one of the electrodes is disconnected. They certainly turn up in a lot of the designs you can ...

My DIY has serial AND parallel resistors. Does that mean I can set the "current limitation at common" to something like 0,20? Or would 0 be fine with this setup?


Why? Parallel resistors have the opposite effect of serial resistors. Using both, just increases the power dissipation and may cause ...

I had a private conversation with boundupone two days ago because I wanted to add estim sound to his video. Later I changed my mind and made a normal tease with some interactions, random play order warm-up and resting sequences in order to find out whether I can cum more than once with electricity ...

Here are some hints for for the Estim settings:


Carrier frequency: Can be set to 700, this should always work well. If you are new in Estimming, you can chose higher values up to 1000. If you think you became insensitive because you Estimmed to often, you can chose lower values down to 500. Don ...

Maybe a little bit late (in the last months I visited this form only very sporadically).

Probably not many people have tried EstimTest -- or it is so bad that no one dares to give feedback. It is something like a endless version of "Brycies EStim Experience" with dynamic sound generation.

The project (see inital post ) has been updated. The major change is a high-level EStim API.

A demo tease can be downloaded there: EStimTest . Download it, unpack the archive somewhere and open (CTRL+O) 'EstimTest.html' in a modern browser (everything but Microsoft IE).

The tease can be ...

It is known that commercial devices (quite for sure all battery powered ones) work like this. In order to trigger a neuron just a pulse is required. (Neurons can only fired at specific rates, Neurons don't "feel" the shape of a pulse, e.g. rectangular, sinusoidal or Mickey Mouse shaped, and neurons ...

Electrode placement:

Channel 1 (FL): glans
Channel 4 (RR): prostate
Channel 2,3: in between
Common (same pole of all channels connected together): Either unconnected (yes, this is possible with more than two channels) or connected to base (below the balls)

Can you be more specific on ...