schematics help please – Electro-Harmonix

This topic has 28 replies, 6 voices, and was last updated 14 years ago by friedjesseradio.

Viewing 15 posts - 1 through 15 (of 29 total)

1 2 →

Author

Posts
July 23, 2010 at 5:41 pm #80528

friedjesseradio
Member

hey my motha uckas! im visiting my uncle im maine and hes really into pedals. is was so freakin happy to see he had a russian muff, vintage bassballs and a broken memory toy (he ripped of a shaft when trying to remove a knob). well hes got a nice pedal making setup workshop and said i could make a pedal if i wanted. he showed me guitarpcb.com and i found it really interesting that there are those pedal layouts. theyre like tabs of sheetmusic to layouts of schematics. i still would like to be about to read schematics though. can someone provide extremely easy (i cant stress how easy) understanding towards reading schematics. can you dudes please help me out and quick. thanks fools

July 23, 2010 at 6:26 pm #110450

Mr.Grim
Member

try diystomboxes.com, and beavisaudio.com to get started, i know there a many useful sites, that i cant remember off hand, but those two will get you started, and im sure others here will fill in the blanks.

July 23, 2010 at 9:53 pm #110455

friedjesseradio
Member

thanks dude! now because of you, i can read schematics!!! one thing im wonderin now is what the hell is this the 1st transistor on the left is different?

July 23, 2010 at 11:37 pm #110456

SanquiFlerb
Member

It’s a different type of transistor

http://en.wikipedia.org/wiki/Transistor#Types

Reading schematics can be hard at first, but then it’s easier than it looks

July 24, 2010 at 2:32 am #110459

friedjesseradio
Member

thanks dude! next question: wtf is a dual op amp? i kinda understand an op amp

July 24, 2010 at 4:02 pm #110465

julian
Moderator

Yeah, that’s a FET.

It tells you what part to use.

A Dual OpAmp is simply an integrated circuit with two OpAmps on the chip. So Both 1c1A and 1c1b are on the same chip. The chip will have 8 connections:

1 for VCC (9v in this case), 1 for ground (or sometimes -VCC, but in this case it’s just ground) and 3 for each opamp.

A common dual op amp you could use is a TL072

July 24, 2010 at 5:19 pm #110469

SanquiFlerb
Member

Wait, doesn’t single chips have 8 connections? 4 on each side? and dual ones 16?

edit: nevermind my question

July 27, 2010 at 6:46 pm #110510

friedjesseradio
Member

this isnt the other schematic but its a very simple fuzz. i will deffinitely be making more pedals

July 28, 2010 at 1:41 am #110516

SanquiFlerb
Member

nice, how does it sound? also, nice vans.

July 28, 2010 at 6:00 am #110523

DarkAxel
Participant

oh, that fuzz is niiice clips?

btw i’d love to start with it, but i can’t solder at all

July 28, 2010 at 6:20 am #110524

Mr.Grim
Member

ive been making my own pedals for years, check out my facebook page for a couple pics.
http://www.facebook.com/?ref=home#!/album.php?aid=1402&id=100001120236513

can anyone name any of the horror movies i put pictures of on my pedals? bonus if you can name them all….lol (im a huge horror film collector)

http://sphotos.ak.fbcdn.net/hphotos-ak-snc3/hs562.snc3/30700_102518653128809_100001120236513_22470_1641813_n.jpg

how did you choose your graffic? and how did you go about applying it to the box?

July 28, 2010 at 7:06 am #110526

DarkAxel
Participant

Grim!!! i can’t drool at work, my boss is gonna be angry!

the bottom right reminded me of Rec… actually it first reminded me of the ring, but then i was like “in the ring there wasn’t too much of a face to glance upon…” lol i’m on fire today…

the others… come on, there’s too many zombie movies to guess that the on on the top kinda reminded me of Evil Dead, but i don’t really know why…

Grim, please… what are those pedals? how do you do the graphics… you guys make me want to learn how to solder and make my own pedals…

July 28, 2010 at 6:53 pm #110532

friedjesseradio
Member

HOLY SHIT GRIM!!! those are so effin awesome!!! seriously you gotta tell us how you did yours.

mine is a fuzz but its the easiest thing out there. its “1 knob beginner fuzz” or somethin like that. i accidently broke the 1st transistor putting it in and we didnt have another one of the same kind so we put in a different transistor. it sounded like an octavia but extremely sputtery. im on vacation right now so i cant fix it but i definitely will when i get home.

what i did for the finish is took

changed the size in paint to 2.5 inch height and printed it off. i used tracing paper and traced it. i put a barrier rectangle of scotch tape around the edge to act like painters tape then i taped my tracing paper over it and etched in my lines with a seam ripper. i then took off my tracing paper but left the rectangle and used acrylic paint accordingly. i did one coat with NO overlapping colors. it was bumpy so i decided to sand it. i was planning on putting a 2nd coat of paint but i loved the way it looked so i kept it like that and put 3 coats of polyurethane spray on it; lightly sandpapering it in between coats.

July 28, 2010 at 6:55 pm #110533

friedjesseradio
Member

oh and i was planning on using

instead at 1st but it wouldnt fit nicely so i think i will get a slightly larger enclosure and use it for my next pedal

July 29, 2010 at 4:26 pm #110548

friedjesseradio
Member

this morning i was looking at it again. when i had tightened the switch and knob, it scratched the polyurethane coat. well when i was looking at it again, i tried to scratch it but was unable to. well the moral of the story is wait 48hours after spray to add components but of course, make sure they fit.
Author

Posts