6.16.2024

bionic hand poseable artists model

 apparently there is a knockoff version of this hand model being produced with really no marketing divisor. 

searching on aliexpress i bought the knockoff because it was cheaper by half, but realized when i received it that the palm was out of proportion to the larger fingers.

i looked a little closer & ordered the more expensive one for a side by side comparison which noone else has done.

its easier to make a fist with the knockoff but the original could be remedied by shaving a bit of plastic off of the index pad (havnt done yet, picture is the unmodified version).

the original has a sturdier, heavier base.

the knockoff base mount falls out of the wrist seemingly by design intentionally or otherwise.

the knockoff has more exaggerated lateral palm flex, but that could be incidental due to missing linkage of the thumb crotch & pinky pad.

the original has better, unrestricted wrist movement.

in the end i decided to keep both because the knockoff looks like it could be a more feminine hand while the original seems more masculine, both could have their uses.






6.03.2024

Dual zone piezos for edrums

 The ekit i bought a while back was made from a chopped up acoustic kit. I had originally made some placement mods since some of the toms werent loud enough & the piezo just wanted to be further from the rim.

When i bought them, the triggers looked like this, x2 of them still do:

Literally just an L bracket, with a big washer screwed on it. The foam pad underneath the piezo oversized, the top foam just a chunk of what looks like backer rod. The rim piezo duct taped to the bottom of the drum (lifting tape with a screwdriver tip there),
& It works... It still works, i only opened them again because i thought i heard a loose washer or something buzzing on hits.

Im planning on relocating these further counter clockwise & further away from the rim toward the center like these older mods i did.

These are also fine, but i though since i was in the neighborhood, i might take another pass to see if i could improve/simplify the bracket design, maybe replace the top foam.

I saw someone use a round makeup applicator, i thought that was sorta clever.


This is the 1st attempt on a tom , not sure why i didnt just get a longer L bracket. I think i just wanted to use up some old aluminum or maybe didnt wanna spend any cash:


Theres not really a reason why it should go all the way across... It dips in the middle because i had limited foam i was using for bottom support. 

This was my 2nd attempt on another tom:
I still got the placement i was after, i shave a piece of foam to adjust height but it cant go higher without stacking. But ideally it should never have to adjust. I guess maybe if the top foam compresses with time but this backer rod foam is so porous i dont think it has enough mass to even register compression until youre like, half crushing it.
I set the height approx 2mm above the rims:




I performed a dissection on one of my roland pdx100 pads. 
First off, fuck roland for selling this for nearly $300...the internals are less than $20 & this shell is injection molded plastic probably $2 at most & the mesh head is probably another $20. Youve made your money back on the initial plastic body cad design after selling like x5 of these at their retail price...anything after that is just insulting the consumer.
A fucking cell phone only costs like $80 & has way more technology & uses than this thing.

Anyway, i wanted to compare the wiring to the custom toms i had & upload decent pics for posterity since i had a hard time finding any online.
         


Roland uses a pcb jack but it doesnt appear to have any additional resistors or caps etc, there are only x3 pins coming through the pcb & i have to expect those to be the sleeve, ring, & tip pins.
Not even a nice bevel jack...



Theres no markings on any of it besides the part number which brings up no results online. I found a similar pcb jack from goedrum & their schematic looks almost intentionally confusing... 




In summary, both piezo brass backing wires go together on one pin, im not sure which pin but its probably the sleeve. I dont know a reason why they would share a ring or tip pin.
The x2 ceramic wires go to seperate pins. Im not sure which, but i think these would be ring & tip, but i have less of a clue to which is which. If i had to guess id say the head piezo ceramic is on the tip.

I already cant trust the diagrams i found online because they show the brass of one piezo sharing a pin with the ceramic of the 2nd piezo...clearly that isnt the case here, so either the diagrams are wrong, or someone at roland fucked up my wiring even though the pad still works...






The alesis wiring is actually a closer fit, they show the brasses sharing a pin. Are alesis making pads for roland now or what?

So i remembered why i made those funky aluminum "brackets" back then, i couldnt find any slotted brackets at any hardware store & the snobby douchebags that work there told me they dont exist.

I was doing idle research when i found these, vertical blind headrail brackets. 
The screw spread is approx 3/4"-1" (bottom) hole is slotted. 
That would leave it approx 1/8" lower than the aluminum brackets i custom cut/installed, so basically perfect, i could make up that difference with the foam at the top or bottom.