ABDUCTOR II DELAY.

[Luke51411]

.015v at pin 4 of ic5 the ground pad at the bottom of the board the same. The ground at the top of the board reads 0.00 I'm going to hardwire the ground at the bottom to my star ground and see if that does anything.

Ok that may have helped a little but there is still quite a bit of noise.

[deadastronaut]

luke:

popped mine open for ya!..,  ( definitely no noise at all man)

if you take a look at my build ,  

time pot only has pads 2-1 connected on pcb..

speed pot only has pads 2-1 connected on pcb.

depth pot only has pads 3-2 connected on pcb.

you seem to have all 3 on each.......so snip those off.

remember: speed is wired backwards for better response...

you also don't have the leds wired up either... led for switching and lfo...

here are my in/out readings

IC5: in/out..

1:4.61v
2:4.61v
3:3.77v
4:0.00
5:4.58v
6:4.61v
7:4.59v
8:9.15v

all working as it should be man.......


i confused myself earlier, i had delay on my mixer so when i bypassed the abductor i still had delay...i was like wtf?....

then spotted it.....need more coffee...

[Luke51411]

Ok maybe those extra wires are acting like an antenna, I'll try that. On my ic power and ground check out, all other pins at exactly 4.5 except pin 3 which is 4.4 I see that's a lot different than your pin 3 maybe there's something suspect there?

[Luke51411]

Thought I figured it out but I was wrong. I snipped those wires you mentioned and tried an lm833 but the noise is still there. It's not too bad when I turned the volume to unity, it gets much worse above that. It's good enough for myself but I'm making one for a friend so hopefully the second one will be better, maybe I just need some time off to come back and spot the obvious problem at a later date.

[Droogie]

I built this and was having a similar issue (made the same wiring "errors"). I added an extra wire from the sleeve of the out jack to a ground point and that took care of 80% of the hiss. It's only audible if I really crank all of the respective volumes. Super fun pedal!!!!!!

[Jdansti]

Hey Rob-

Since the Time pot is labeled "lin", does that mean you used log/audio pots for the other eight controls?

[deadastronaut]

hi john...

speed, and voll are ''A''

all others are 'B'

[Jdansti]

hi john...

speed, and voll are ''A''

all others are 'B'

Got it-thanks!!!

[deadastronaut]

You must have a wrong component,....

I dont think even the debugging thread can help......hmmmmm.....

[Jdansti]

You must have a wrong component,....

I dont think even the debugging thread can help......hmmmmm.....

Who?

[armdnrdy]

Is Rob sleep posting again?   

Or posting while inebriated.   

[Jdansti]

Time Warp...

[deadastronaut]

Thats weird, there was really long religious posts from a nutter.....now theyve gone?..

twilight zone...do do do do...do do do do......strange...

[Jdansti]

Spam from Mars?

[deadastronaut]

Yeah i guess... ghosts in the machine that eat spam...whilst talking crap.

[croopy]

HI i just bought your pcb and was wondering if this parts list:

ldr?.. voltage reg is 78l05 to92.

here ya go..



you will have to count ...as i just copy and paste as i go..just how i work.

is the same for Abductor ii ?? or ... no ??
thanks for reply 

[deadastronaut]

Hi croopy, the build pdf is on page 1 of this thread.

or download from my site..see link below. 

[croopy]

Thank you
I did see the part list, just found it a bit hard to tally up the parts with out printing it out, I am just lazy i guess
Thanks again for a great project, I have some pt2399 ordered and a hot impatience iron


@Luke51411 i noticed in your build pic that you have also left out resistor "clr" 4.7k hope this helps

i noticed that you have used a mix of metal film and "normal" sandy colored, are the metal film following the music signal path ? or just random ??
thanks for any reply    

[Jdansti]

Got 'er done!  Thanks Rob!  Sounds great!

Here's my Abductor II delay developed by Deadastronaut. He did a great job on this. I used his PCB and it worked straight off without any troubleshooting.

I went with a tongue in cheek Star Trek theme on photo paper with a coat of Envirotex on top.  The LEDs are under the photo paper.








Here's a video showing the LED action. Sorry for the low quality of the video.

http://www.diystompboxes.com/smfforum/index.php?topic=36392.msg1022908#msg1022908

[deadastronaut]

Thats brilliant, love how youve done the eyes....col..