Hi all
Thanks to nickallen post in longecity tDCS i get to this forum.
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I buld some simple cheape tDCS device mysef for about 10S .
It simplest posible and dount have any advanced features ,even if it does not seem it,the safety is comparable to commercial devices.
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I made for some of my expedimens and i try tit about 50times in 3years period mainly for L-DLPFC stimulation.

With a few adjustments would be ​​applicable to C3 stimulation protocol.

In a last few eaks they apper many moustly DIY TDCS devices , moust promising it looks GoFlow β1
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i look at minlive oasies - this look like only a CES device (CES has aplication for tinnitus too)

I think that CES could be effective in CPRS with right waveform ,but i dount knouw much about CPRS ,i will try to read research paper posted here and maybe i come up with something.

I made simple CES device too from MP3 player and little battry amplifiler

Did you tried some mental technigues for CRPS , i interesting in lucid dreaming and out of body experience and seem to me tant some methods is can be used for CRPS treathment.One of this methots work with multisensory integration to change the body image - if there no body image the is no pain , pain is cant be without the body.is about how to turn-off or change the preception it based on same principes like mirror box.

One neuroscience hint if you have a hand pain try to cross over the hands
this little lowering the sensory ingretion and pain it cam be litte less.