Electrosmith 3340 VCO User manual

Electrosmith 3340 VCO MU Build Guide
1

Contents
Overview of the included parts . . . . . . . . . . . . . . . . . . . . 3
Build................................... 4
Build................................... 5
1.PowerHeader ......................... 6
2.LinkHeaders.......................... 10
3.Submodule........................... 15
4.JacksandPots......................... 21
Finish .................................. 27
Test ................................... 30
Calibrate ................................ 31
V/OCTTrim ........................... 31
HFTrim.............................. 31
SymmetryTrim.......................... 32
ShapeTrim ............................ 32
2

Overview of the included parts
•x5 10k Potentiometers
•x10 MU Jacks
•x1 Electrosmith 3340 Submodule
•x1 Electrosmith 12V PSU Submodule
•x1 Electrosmith 3340 VCO 1MU Top PCB
•x1 Electrosmith 3340 VCO 1MU Bottom PCB
•x1 Electrosmith 3340 VCO Front Panel
•x2 2x8 Male Headers
•x1 1x6 MU Power Header
•x2 1x10 Female Headers
•x2 1x10 Male Headers
•x2 1x4 Female Headers
•x2 1x4 Male Headers
•x5 Knobs
3

Build
4

Build
5

1. Power Header
6

The short pins should be pointing through to the top-side of the PCB, while
the plastic and longer side of the pins should be visible on the back of the
PCB. Make sure the plastic lock tab is facing down.
The side of the PCB with the text “5U POWER” is the bottom side of the
PCB.
The holes for the power header are offset slightly in both positions so that
once inserted, the power header will stay in position while you solder it.
7

8

Once soldered, clip the pin labeled “K” from the power header.
9

2. Link Headers
10

Populate both PCBs with the 2x8 male headers. The short pins should be
pointing through to the top-side of the PCB, while the plastic and longer
side of the pins should be visible on the back of the PCB.
11

12

All of the connections that need to be soldered are highlighted with white
circles to visually assist in the build process
13

14

3. Submodule
15

Connect the female and male headers together.
16

With the board face down, insert the female headers into the 1MU PCB.
17

Place the Electrosmith 3340 submodule and 12V PSU submodule with pin 1
(indicated by a square pad) aligned with the marker on the 1MU PCB. The
trim pots, and logos should be pointing up.
Solder the submodules onto the headers.
18

Flip the module over, leaning the now connected submodule against a surface
that will keep all of the headers flush with the 1MU PCB.
Solder the female headers into the 1MU PCB.
19

20