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Old 09-09-2006, 11:56 PM   #1
call1800ksmyazz
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Bobtavia!!! (With Pictures!!)

Yea, while all of you are doing long pedal builds that take weeks, I am here taking a whole day to do one pedal . So yea, yet another one of my builds has neared completion today. With at least 5 hours of building, troubleshooting, testing, measuring, soldering, cutting, mounting, switching, turning, etc... I have finished yet another pedal. Yes I am a monster . This is the Bobtavia, which is another Octave Up pedal with some drive, since I wasnt happy with the Octup... This is a Transformer and IC Chip based pedal. It sounds great with a fuzz pedal before it too.

Well I added some features. I put an LDR for the only resistor in the circuit (100k), but also put a switch to go from the LDR (foot control) and the 100k resistor (standard). I have a footswitch. I will have a power switch, LED, and an adaptor jack tomarrow. I will box it up tomarrow too.

So I know you all want the pictures of course:







Heres some tone setting descriptions: (G-Guitar P-Pedal)
Thin, aparent octave: G Volume-10 G Tone-0 P Gain-10 P Volume-10
Octave with crunch: G Volume-10 G Tone-10 P Gain-10 P Volume-10
Clean octave: G Volume-3 G Tone-10 P Gain-10 P Volume-10 (Single Coil/Neck Humbucker)

Let me know what you all think!
Kerry
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Old 09-10-2006, 12:05 AM   #2
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I didn't remember you... then I saw how you soldered. I was thinking, "Hey! It's the amazingly neat soldering guy!"


Dude you make some awesome stuff. Love to read your threads. Keep it up.
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Quote:
Originally posted by sum loser
No, but may I ask why tinky winky? You're not going to pull a michael jackson, are you?

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Old 09-10-2006, 12:09 AM   #3
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Soul Taker- haha thanks! I definately will make threads everytime I build something which is all the time. This one wasnt such a great soldering job. I used one transformer, took it out and used a new one, I changed the socket once, I took out a resistor, put an LDR, then took LDR out and put both in with a switch, etc... The secret to my semi-neatness is Desoldering Braid. Once you know how to use it right, it will be used almost more than the actual solder. I just salvaged 2 boards from 2 pedals that I didnt want by desoldering and cleaning it up amazingly. If you want pictures of those 2 boards, I can post them.
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Old 09-10-2006, 12:14 AM   #4
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Quote:
Originally Posted by call1800ksmyazz
Soul Taker- haha thanks! I definately will make threads everytime I build something which is all the time. This one wasnt such a great soldering job. I used one transformer, took it out and used a new one, I changed the socket once, I took out a resistor, put an LDR, then took LDR out and put both in with a switch, etc... The secret to my semi-neatness is Desoldering Braid. Once you know how to use it right, it will be used almost more than the actual solder. I just salvaged 2 boards from 2 pedals that I didnt want by desoldering and cleaning it up amazingly. If you want pictures of those 2 boards, I can post them.


Please post pics! I'm always up for that
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Quote:
Originally posted by sum loser
No, but may I ask why tinky winky? You're not going to pull a michael jackson, are you?

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Old 09-10-2006, 12:16 AM   #5
call1800ksmyazz
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^-haha, ok, but tomarrow morning. sorry, but its late and all and I am very tired from all the work, and my parents are asleep so I dont want to walk past and wake them or anything... check back tomarrow.
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Old 09-10-2006, 12:52 AM   #6
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^ haha you are an animal!!! sweet sweet analog octave, nothing quite like it really, dsp doesnt even come close.
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Old 09-10-2006, 08:11 AM   #7
call1800ksmyazz
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^-haha thanks. this is a great octave. I cant wait to get it all boxed up so that using the LDR is much easier

Quote:
Originally Posted by soul_taker
Please post pics! I'm always up for that

Ok pictures of 2 desoldered boards...


^-This one is blurry but shows how close and smooth it is now. I have desoldered and cleaned both boards.

Thats all off topic, but now back on topic... Comments... Sound Clips soon!
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Old 09-10-2006, 05:39 PM   #8
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Quote:
Originally Posted by call1800ksmyazz

Thats all off topic, but now back on topic... Comments... Sound Clips soon!


Can't wait for sound clips.

Just a thought but maybe you could ask the mods for permission to make a "How to Solder Thread" and have it as a sticky. Soldering is widely used in customization and you seem to be a pro at it. Sorry if there is already a lesson on it and I didn't see it.
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Quote:
Originally posted by sum loser
No, but may I ask why tinky winky? You're not going to pull a michael jackson, are you?

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Old 09-10-2006, 06:05 PM   #9
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Wicked.... Jesus man you get a lot done.

Do you have a schematic, and possibly a parts list for this one? Also what the heck is that big weird looking thing next to the transformer.
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Old 09-10-2006, 06:17 PM   #10
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http://aronnelson.com/gallery/Bobtavia

the big squigly thing is the light dependent resistor (ie, the LDR he was talking about)
though, i'm not sure how he plans on using it
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Old 09-10-2006, 10:07 PM   #11
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Thanks guys. Sorry I have been out today and also finished the pedal.

The circle thing there, like Greenbox said, is a Light Dependent Resistor (LDR). This is a sensor that changed the resistance value depending on how much light is getting to the sensor. I have a switch to change between 2 modes. Mode 1 is Standard mode with a 100k resistor. Mode 2 is Foot Control mode with the LDR.

Heres some final pictures before the sound clips which will be here tomarrow:




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Old 09-11-2006, 04:02 AM   #12
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niiice.

quick question about octave pedals in general - does it make your guitar sound quite bass like or is it more of a synth like effect? could you hypothetically run it in parallel with a dry signal (i already have schematics on how to do that) and create a fuller sound? ala iron maiden heroic riff that takes 2 guitarists on different octaves to play?
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Old 09-11-2006, 07:33 PM   #13
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^- Thanks. What you want is a pitch shifter. An Octave gives either a high or a low octave and it gives some fuzz to the sound because its a strange type of circuit. Its more synth like and ring modulator like.

Now sound clip!:
1. Long Demo of just random stuff. Im not demonstrating my playing at all (horrible playing), but the pedal: http://media.putfile.com/Bobtavia-Demo

I had another clip, but it didnt record for some reason so I guess more later.
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Old 09-11-2006, 08:18 PM   #14
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so why did you use a ldr?
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Old 09-11-2006, 08:23 PM   #15
call1800ksmyazz
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^- Well its an LDR "option". It can be switched to normal or LDR modes with the switch on it. Its just that I ordered like 8 LDRs and they are awsome so I decided to add them as a little feature. With this LDR it more controls volume and is kindof like a trelmolo pedal if you move your foot up and down over it.
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Old 09-11-2006, 08:26 PM   #16
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oh, ok thats cool, sounds like a good option to me, i thought maby you were useing because you were broke or something...where did you get the schematic at?
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Old 09-11-2006, 08:31 PM   #17
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Yea. No, its not cause im broke. Heres the schematic and layout. The layout was wrong when I used it so I had to follow the schematic, but I told him and he corrected it.
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Old 09-11-2006, 09:32 PM   #18
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uhhh where is it, i cant see it.....
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Old 09-11-2006, 09:40 PM   #19
call1800ksmyazz
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crap... http://aronnelson.com/gallery/Bobtavia haha sorry. thought i posted it. it was up in the thread a bit though.
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Old 09-11-2006, 09:49 PM   #20
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ok thats pretty cool, not too hard of a schem either, kinda nice for the sound you get out of it, pretty good build, this should score you some points with the mods...maby get on the who to listen to list, haha it all really means nothing though, these forums seem like just one big pissing contest sometimes anyway.....
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