Frequency Central MU Wave Runner LFO Manual

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MU Wave Runner LFO
Powered by Electric Druid code exclusive to Frequency Central
Wave Runner is a multi-waveform sync-able LFO based on the Electric
Druid TAPLFO2D family of code, but with some significant additions and
improvements. The TAPLFO2D-FC PIC is not compatible with similar
modules, and was developed specifically for the Wave Runner.
Main PCB Assembly
1. Place and solder all resistors and diodes
2. Place and solder 20MHz crystal
3. Place and solder both IC sockets
4. Place and solder both 22pF capacitors
5. Place and solder all non electrolytic capacitors
6. Place and solder BC547, 78L05 and 79L05
7. Place and solder power header
8. Place and solder 10K trimmer
9. Place and solder all electrolytic capacitors
10. Flip the PCB over and solder all four pots on the other side.
Sockets PCB assembly
Place all sockets on the PCB, then place the panel over them. This will
assure that the sockets are correctly positioned. Flip the whole lot over
and solder the sockets into place.

Bill of Materials
1K x 7
4K7 x 1
10K x 2
12K x 2
33K x 2
47K x 1
91K x 1
100K x 2
All resistors ¼ watt
metal film
22pF x 2
2.2nF x 1
4.7nF x 1
10nF x 2
100nF x 9
10uF x 2
47uF x 2
WAVE RUNNER PIC x 1
TL084 x 1
BC547 x 1
78L05 x 1
79L05 x 1
20 MHz crystal x 1
5mm LED
B100K x 4
¼” Socket x 4
10K trimmer
Power Header:
MTA100 - 6pin
Knobs x 4
Final Assembly
1. Place LED onto the PCB –do not solder yet
2. Mount PCB onto panel and tighten nuts
3. Ensure LED pokes through the hole on the panel, solder into place
4. Mount sockets PCB to panel and tighten sockets
5. Using cut off resistor legs, connect the two PCBs (see photo)
Calibration
The 10K trimmer is for Level CV zero offset. Correct set calibration ensures that the output from the
LFO socket is spot-on at 0V when the Level CV input sees 0V. This is particularly important when
using Wave Runner as a pitch vibrato source into a VCO with a mod wheel controlling LFO depth via
the Level CV.
1. Hook up the LFO output to a DMM
2. Ground the Level CV input
3. 3. Adjust the trimmer until your DMM reads exactly 0V
RDH 04/01/19
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