GUIDE TO ASSEMBLY OF ERICA SYNTHS WOGGLEBUG

GUIDE TO ASSEMBLY OF ERICA SYNTHS WOGGLEBUG
If you are reading this, most probably, you are about to build Erica Synths Wogglebug. A Wogglebug has nostalgic
value for us, because in the beginning of 2014 a Wogglebug panel with a bug design was the first Erica Synths
project we offered for DIY community and it actually started a company. On August 2015 Scott Deyo from
Brideschamber dropped us a mail asking, if we plan to make another run of Wogglebug panels, as we took it
serious.
The Wogglebug features 3 random audio outputs – Woggle tone, Tone, and Ring, a ringmodulated version of both
above , 3 random CV outputs with a wide range of randomness control, as well as Rate CV input, External Clock
input to sync a module to the external clock, and Clock Output to use a Wogglebug as a clock source.
We adapted Wogglebug for eurorack standard – recalculated component values to make it work properly from
12V PSU, added clock rate and stepped CV indicator LEDs, developed skiff friendly PCB and squeezed all parts on
a single PCB and made a new panel. The module doesn’t need wiring and calibration, and it’s comparably easy to
build – almost as easy as to draw an owl.
Technical characteristics
Audio output amplitude…………………8V ptp
CV output amplitude…………………….15V ptp
Power consumption…………….30mA@+12V
……………..18mA@-12V
Module width…………………………………..14HP
Module depth…………………………………25mm
GUIDE TO ASSEMBLY OF ERICA SYNTHS WOGGLEBUG
BOM
Links are from Farnell.lv, but you can use the part number for local Farnell
CAPACITORS
C2-C14
C1
C15
C18
C23 - C25
C19, C20
C21
100n
100n
10n
1n
47n
1µ
2.2µ
C22
C16, C17
3,3µ
47µ
1 Non polarized Electrolytic >25V, 2,5mm spacing
Electrolytic >25V, 2,5mm spacing
RESISTORS
R01, R05
R1
R02
R2
R3, R4, R5, R04, R41
R03, R6, R7, R9, R10
R8, R40
R11, R13-R16,
R12
R17
R18
R19
R21-R27
R29-R31
R31, R32
R33
R34
R35
R36
R37-R39
3k3
820ohm
150k
2k2
68k
100k
300k
10k
8k2
10M
120k
15k
1k
1M
20k
220k
4k7
470ohm
49K99
33k
2
1
1
1
5
5
2
5
1
1
1
1
8
3
2
1
1
1
1
3
SEMICONDUCTORS
T1
T2-T4
2N3906
2N3904
1
3
U1, U2
U3
U4
U5, U6
U7
CD4046
LF398
LM555N
TL072
TL074
2 DIL case
1 DIL case
1 DIL case
2 DIL case
1 DIL case
D1-D4
D5, D6
1N4148
1N4007
4
2
Vactrol
Vactrol
VTL5C3
VTL5C3/2
1 Farnell VTL5C3
1 Farnell VTL5C3/2
LED
3mm
2 Color of your choice
POTENTIOMETERS
V2 - V4
V1, V5, V6
B1M
B100k
3 Thonk
1 Thonk
Ferrite bead
2x5 pin
2 Can be replaced by 20ohm resistor
OTHER
L5, L6
Power connector
Jacks
IC sockets
IC sockets
IC sockets
16 pin
14 pin
8 pin
13 SMD 1206
1 Ceramic, 2,5mm spacing
1 Film, 5mm spacing
1 Ceramic, 5mm spacing
3 Film, 5mm spacing
2 Electrolytic >25V, 2,5mm spacing
1 Electrolytic >25V, 2,5mm spacing
9 Tnonkiconn
2
1
4
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
1%
5%
GUIDE TO ASSEMBLY OF ERICA SYNTHS WOGGLEBUG
ASSEMBLY
Take precautions with regard to electrostatic discharge (ESD) safety. Handling components should be done
in electrostatically safe environment. Use personal and workplace grounding. Any discharge (even a minor
one) from body to a component may permanently damage it. Then follow the instructions below!
1
Let’s start with drawing an owl!
2
First solder SMD decoupling capacitors!
3
Erica Synths Wogglebug PCB V2 has some errors on silkscreen – resistor values have to be changed according
to the BOM! Start populating the PCB with these resistors!4
Use 150k
resistor here!
R38-R39
should be 33k
Swap these!
R03=68k, R04=100k
GUIDE TO ASSEMBLY OF ERICA SYNTHS WOGGLEBUG
4
Step by step solder all passive components!
5
Solder IC sockets and active components!
6
Take tongs and cut off positioning lugs of the
potentiometers!
GUIDE TO ASSEMBLY OF ERICA SYNTHS WOGGLEBUG
7
Turn the PCB around and solder potentiometers!
9
Put the front panel on, and position jacks in
relevant places! Now you can solder them.
8
10
Insert Jacks, but do not solder then yet!
Same goes with LEDs – insert them in relevant
holes (mind the polarity), position them in holes
on the front panel and then solder them on PCB!
GUIDE TO ASSEMBLY OF ERICA SYNTHS WOGGLEBUG
11
And now it’s time to put the front panel on and fix it
with nuts of jacks and potentiometers! Use pot
knobs of your choice!
12
Check, if you get fluctuating frequency audio on
bottom row jacks and CV and Clock signals on
relevant outputs!
The Wogglebug should work straight away. Use the module for unpredictable, random patches, sonic
experiments, as a clock source and as a great decoration in your modular setup!
Erica Synths Wogglebug demo on Youtube.