# Building AEON overdrive pedal from mammoth electronics, need help...

#### Hugh Notman

Dec 5, 2015
20
Okay, so as the title says I am building the AEON overdrive pedal from mammoth electronics (link below). However, I need a little advice on how to proceed.

So I finished adding resistors, capacitors, and diodes (etc) to the PCB, but I don't know how to connect the pots to the PCB. There are indicators for where I should connect the tone, volume, and gain pots but I'm not sure which one of my pots connects which of the indicators. There are pots marked: A500K, B100K, and B5K. Which of these pots performs which role?

On the other side of the PCB there are indicators for "AEON", "IN", "Out", "S5", "S6", "S4", "D5" and "Ground". What do each of these mean and how do I hook them up?

http://www.mammothelectronics.com/Aeon-Overdrive-p/kit-gpcb-aeondr.htm

If you need pictures let me know and I will gladly edit this and add them. All help is appreciated!

#### dorke

Jun 20, 2015
2,342
Yes, pictures are essential !
And more important:
If you have a circuit diagram and/or building instruction post them as well.

#### dorke

Jun 20, 2015
2,342
I found this assembly instructions.

You should use wires to connect these:
in =input jack
out =output jack
S4-S6 = switch connections.
GAIN = 500K
Tone = 5K
Vol = 100K

Direct connection :
D5 = dual color LED connections.

Hope that helps.

BTW,
If they charge 55$for that thing, it's an annoying reap-off... Last edited: #### brevor Apr 9, 2013 87 BTW, If they charge 55$ for that thing,
it's an annoying reap-off...

No thats actually pretty reasonable for a kit with all parts included and a predrilled case.

#### dorke

Jun 20, 2015
2,342
Well,
Here is a fully functional assembled(not a kit)
Overdrive Guitar Effect Pedal for under 18US$including shipment. In a kit form they would sell it for about 10$...
In the future,
learn to take advantage of the Chinese cheap stuff.

Moderator
Jan 21, 2010
25,508
In a kit form they would sell it for about 10$... Complete with indecipherable instructions! #### Hugh Notman Dec 5, 2015 20 I found this assembly instructions. You should use wires to connect these: in =input jack out =output jack S4-S6 = switch connections. GAIN = 500K Tone = 5K Vol = 100K Direct connection : D5 = dual color LED connections. Hope that helps. BTW, If they charge 55$ for that thing,
it's an annoying reap-off...

Follow up question, there are three lugs for tone/gain/volume do I connect the right lug of the tone to the right arm of the pot, etc. ?

Thanks

#### dorke

Jun 20, 2015
2,342
You should connect it the way it is shown in the pic .

It will effect the min-max rotation direction of the pot.
If you get it "reverse" simply swap the left and right wires.

#### Hugh Notman

Dec 5, 2015
20
You should connect it the way it is shown in the pic .

It will effect the min-max rotation direction of the pot.
If you get it "reverse" simply swap the left and right wires.

View attachment 24550
You're the best! Thank you so much!!!

But how/where do I ground the circuit to and the mod thing isn't necessary, right?

Also, the LED only has two prongs so what should I do about that ?

Last edited:

#### dorke

Jun 20, 2015
2,342
No need for the 'mod".
GND wires are shown in grey.
Basically you connect the 3 jacks:In,out,power.
(the power polarity should match the wall-wart PS you use,
if there is marking on the box go by it)
Is there a battery housing?

See this example:inner is GND ,outer is +9V

#### Hugh Notman

Dec 5, 2015
20
No need for the 'mod".
GND wires are shown in grey.
Basically you connect the 3 jacks:In,out,power.
(the power polarity should match the wall-wart PS you use,
if there is marking on the box go by it)
Is there a battery housing?

See this example:inner is GND ,outer is +9V

View attachment 24556
Ok, thanks but how do I solve the LED problem?
Mine only has two legs instead of the three described in your photo.

#### Hugh Notman

Dec 5, 2015
20
p
Ok, thanks but how do I solve the LED problem?
Mine only has two legs instead of the three described in your photo.
No need for the 'mod".
GND wires are shown in grey.
Basically you connect the 3 jacks:In,out,power.
(the power polarity should match the wall-wart PS you use,
if there is marking on the box go by it)
Is there a battery housing?

See this example:inner is GND ,outer is +9V

View attachment 24556
Also where does the end of the 9v go, on the other nub of the stereo output? Sorry for so many questions...

#### dorke

Jun 20, 2015
2,342
1. The 2 legs LED goes like this:
Long leg(anode) connected to #2 the other leg(short) connected to #3.

2. There should be 3 jacks in the kit:
-two for audio (in and out ).
-one for power (or maybe there is a 9v battery connection) .
The 9v should be connected to it(and GND as well).
Please post a photo of what you have.

#### Hugh Notman

Dec 5, 2015
20
1. The 2 legs LED goes like this:
Long leg(anode) connected to #2 the other leg(short) connected to #3.
View attachment 24601
2. There should be 3 jacks in the kit:
-two for audio (in and out ).
-one for power (or maybe there is a 9v battery connection) .
The 9v should be connected to it(and GND as well).
Please post a photo of what you have.
Ok, here are some photos.
Blue = Input
Red = Output, LED
Green = Switch

FYI, I misplaced my actual LED so I used another LED I had. Also, I lost my IC chip so do you know if there are any good places to find IC chips that would work in this pedal.
1. The 2 legs LED goes like this:
Long leg(anode) connected to #2 the other leg(short) connected to #3.
View attachment 24601
2. There should be 3 jacks in the kit:
-two for audio (in and out ).
-one for power (or maybe there is a 9v battery connection) .
The 9v should be connected to it(and GND as well).
Please post a photo of what you have.

#### Attachments

• IMG_0341 (1).jpg
300.2 KB · Views: 100
• IMG_0342 (1).jpg
294 KB · Views: 130
• IMG_0343 (1).jpg
252.8 KB · Views: 110

Jun 20, 2015
2,342
The Ic can be purchased here (10PCS at 1$) Your work needs improvement, wires are stripped too much (see the pic below for examples). Very important: swap the pots connections-they are not as shown in the instructions. I would re-check the switch wiring as well. #### Hugh Notman Dec 5, 2015 20 The Ic can be purchased here (10PCS at 1$)

Your work needs improvement, wires are stripped too much (see the pic below for examples).

Very important: swap the pots connections-they are not as shown in the instructions.
I would re-check the switch wiring as well.

View attachment 24627
Ok, thank you, are those the only problems that you see or is that just the tip of the iceberg. E.G. Is the LED set up semi-correctly?

Also, couldn't I just connect the ground to the ground lug of either the input or the output and if I didn't want to have a power jack couldn't I connect the negative from the snap to the non-used lug of the stereo jack?

Replies
3
Views
683
Replies
2
Views
471
Replies
1
Views
403
Replies
5
Views
786
Replies
17
Views
2K