Oceanus' SK-5 Pattern Mutator Mod

[mikebike]

i did the patern mutator mod today and took some pics.

http://www.circuitbenders.co.uk/forum/index.php/topic,651.0.html
its about half way down there

 right now its just an RCA patch bay. but im thinking off trying some inverting  and  xor gates to mess with the signal a bit differantly

all right, step 1

find this part of your board, with the back of your sk-5 off, and up, keys down toward you, this is top left above the 2 big chips.
you'll need to cut the traces between the 8 pins and the corasponding test points.
next i added a little blob of solder to eact test point (the test points look like little solder pads with no leeds coming through them, also they are stagerd from eahother)

next solder a wire to each test point, i used pretty thin red wire for the top row, you'll probibly want to be able to identify the points so you can return the drum chip to normal, or maybe not. if you use one color for each row and keep them flat, this will be easy...
oh yeah, use some hot glue after you get those 8 wires down, i allways manage to mess something up while working, so i protect it at each stage


oh yeah, dont for get to clean your soldering iron, it will make your life easier, i use a stainless steel sponge thing, and a little sand paper when it gets bad,



edited for some spelling, kind of

[mikebike]

soooooooo, next
oh yeah

i put a bit of solder on the pins before acutally soldering the wires in, i find this helps when working in tight spots with lots of wires, unless you have 3 hands, put thats a differant mod for a differant page.
oops, dont do what i did and brige any solder points

like before, solder 8 different color wires to each pin, then add hotglue


oh yeah, clean your soldering iron

edited grammer and shiz

[mikebike]

next is the patch bay, if using rca, or any 2+ termenal conector, make sure you use the same pin on every jack. this may seem obvious, but its easy to overlook some times, and if you miss it youll wonder why it doesnt work, and then youll tell your frineds "dont ever listen to mikebike on the EA forum, what a jerk"


heres a bonus rca patch cable pictorial!

rca cables are supposed to have shielded cable, but i had this flexible 2-conductor stuff lying around, so i used it
first strip your cable like so


now is a good time to decide witch (whitch wich) conductor will be hot, and witch ground, i chose red as hot. solder the hot lead to the small lug in the center and the grnd to the big lug with the wire grabber. i like to push the casing (black insulator) toward the conections a little before pinching the clamp thinger, looks nice and neat

next: heat shrink.... cut a piece, slide it ovever the assembly, dont cover the threads on your plug though, then hold over a lighter twisting the cord  and moving the lighter slowly, keep the cord far enough that the heat shrink tubing doesnt burn


the heat shrink tubing is nice beacuse it protects the joints and looks nice when you slide the cover on


i didnt take pics while doing the other side, but remember to slide the cover, then the heatshrink tubing on the cable, BEFORE soldering the jack on.

oh yeah, reapeat untill you run out of jacks

[mikebike]

Thats it, if you conect the pins back with the rcas you will have normal operation, mix up the patch cables and see what happens!

[mikebike]

this is oceanus' image, hope it helps

[expanoncolin]

Sweet!  Those patch cables do look nice.  Sticky'd.

-Colin

[mikebike]

thanks!

PS: got my PU in the mail today, thanks!

[mikebike]

I built a little switch matrix for this mod ill post some pics when its installed and running!
what happened to the old pictures?!

[expanoncolin]

Looks like they were hosted somewhere where they have since been deleted (facebook maybe?  The url has fbcdn.net in it).

-Colin