Amptweaker - Tight Metal  [traced]

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
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bajaman
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Post by bajaman »

tight metal -3a.sch
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my preliminary amended Eagle schematic - tone control, notch filter and power supply corrected :wink:
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Post by apollomusicservice »

Bajaman can you upload your schematic as pdf?

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Post by bajaman »

TM schem 3a.png
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The G
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Post by The G »

Bajaman, C1-R1-R3 should connect to GND.
Now the schematic look really interesting. Given some spare time I'll breadboard it.

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Post by jymaze »

Thanks you all for putting the schematic from my crappy handwritten drafts in a software. I just hate doing it for some reason. But I can trace all day long! That is the fun part for me.

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Post by azrael »

J0K3RX wrote:What, nobody made a single layer through hole yet? :? Is it because it doesn't have Wampler tattooed on it? :mrgreen:

Don't make me do it! We will be debugging till the cows come home... :roll:
Was just waiting until the correction were released. ;)
I'll finish it after work today. Just a bit hard to make out what's going on with the power network, I usually prefer to use Net labels or Voltage reference symbols for that sort of thing, so it was a bit harder for me to decipher it. :)

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Post by jymaze »

Azrael,

Here is the PSU in an easier to decipher format.

I already posted that before, but actually I forgot the 4007 in series with a 47 ohms resistor. There are 2 4007 diodes in the PSU... Good polarity protection!
PSU.pdf
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Post by apollomusicservice »

This is a new version with implemented corrections. Points 1-5 are connected to ground, IN-input, OUT-output, IN1 and OUT1 to insert out, the T1 Tight pot, G1 and G2 to gain pot, G3 and G4 to gain pot other sections (both at Gate SW also), TO1 TO2 TO3 on Tone pot, TH on Thrash sw, V1 V2 V3 the Volume pot and
+9 V power supply. :)

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Post by bajaman »

TM schem 3b.png
grounds connected and extra diode in power supply :wink:
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Post by bajaman »

Tight Metal 0.9 (needs verifying) small.BMP
Tight Metal 0.9 (needs verifying) small.BMP (1.72 MiB) Viewed 1000 times
My new rendition in Sprint Layout V6.0 - needs verifying - some of the tracks are on different layers - not sure what the DC socket is so pin footprints may be wrong - please advise if you see ay obvious mistakes :wink:
I will post complete files including gerber files etc. once layout is deemed to be correct - I will probably adjust the dc socket footprint for a 2.1 mm standard DC socket in the final draft.
here is a composite of V0.9
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Post by J0K3RX »

Just got home from work... nice progress!!!

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Post by J0K3RX »

azrael wrote:
J0K3RX wrote:What, nobody made a single layer through hole yet? :? Is it because it doesn't have Wampler tattooed on it? :mrgreen:

Don't make me do it! We will be debugging till the cows come home... :roll:
Was just waiting until the correction were released. ;)
I'll finish it after work today. Just a bit hard to make out what's going on with the power network, I usually prefer to use Net labels or Voltage reference symbols for that sort of thing, so it was a bit harder for me to decipher it. :)

Damn! Can't wait!! :D

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Post by bajaman »

Amptweaker - Tight Metal V5
Amptweaker - Tight Metal V5
still more corrections 15k changed to 1k5 :wink:
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Post by euronymous0001 »

im not accustomed to the way bajaman drew the PSU. :mrgreen:
so here is one for those who are like me :oops:

Image

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Post by J0K3RX »

If somebody creates a through hole layout I can etch and build this weekend and do a side by side comparison... :twisted:

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Post by bajaman »

Can you do double sided etching okay Jim :?:
and you may not like my latest schematic euronymous0001 but at least it is correct - your one has at least two errors in the layout and component values :roll: ( and it is almost too small to read :cry: ) hint 15k resistor should be 1k5 and the second filter to ground in the notch section is connected wrong :wink:
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Post by bajaman »

AND the 68k resistor supplying the bias line should be 6k8 :roll:
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Post by bajaman »

AND the VR supply rail resistors are 18k and 47k NOT 100k and 150k :roll:
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Post by bajaman »

AND the resistor in series with D2 should be 47 ohm NOT 68k
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Post by bajaman »

AND C14 should be 22n NOT 220n - for fuck's sake use your eyes :wink:
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