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PROJECT NAME
LUNA
BASED ON
4ms Tremulus Lune
EFFECT TYPE
Tremolo
PROJECT SUMMARY
An all-analog tremolo featuring six knobs for fine control over every aspect of the waveform.
This documentation is for the kit version of the project. If you purchased the PCB by itself, please
use the
PCB-only version
are completely different due to the specialized parts and assembly methods used in the kit.
LUNA OPTICAL TREMOLO
SYMMETRY
VOLUME
LUNA
OPTICAL TREMOLO
IMPORTANT NOTE
of the documentation instead. The circuit is the same, but the instructions
BUILD DIFFICULTY
Intermediate
DOCUMENT VERSION
1.0.5 (2024-08-08)
9V
SPACING
RATE
DEPTH
SMOOTH
1
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Table of Contents
Related Manuals for aion LUNA
Summary of Contents for aion LUNA
- Page 1 This documentation is for the kit version of the project. If you purchased the PCB by itself, please use the PCB-only version of the documentation instead. The circuit is the same, but the instructions are completely different due to the specialized parts and assembly methods used in the kit. LUNA OPTICAL TREMOLO...
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Page 2: Table Of Contents
20 Enclosure Layout: Main & Footswitch PCBs 21 Enclosure Layout: Input/Output PCB 22 Final Testing & Assembly 23 Schematic 24 Full Parts List 25 Troubleshooting Information 26 Support & Resale Terms 27 Legal Information & Document Revisions LUNA OPTICAL TREMOLO... -
Page 3: Introduction
INTRODUCTION If this is your first pedal, welcome to the hobby and thank you for choosing Aion FX. You’ve just joined a community of over 100,000 people around the world with a passion for building homemade noise machines using obsolete electronics technology, and we’re glad to have you! If you’ve done this before, it’s great to see you again and we’re confident you’ll find this build experience... -
Page 4: Packing List
Electrolytic Capacitors 150k NAME 220k 10uF 47uF 100uF MLCC Capacitors NAME TL072 NAME TL022 330pF (blue, marked “331”) 8-pin socket 100n (yellow, marked “104”) Other Diodes NAME NAME VTL5C3 vactrol (optocoupler) 1N5817 1N914 Transistors NAME PN4303 JFET LUNA OPTICAL TREMOLO... - Page 5 NAME LED bezel LED, blue LED, red 9V battery snap DC jack Input/output jack Mounting nut, jack, 0.54" Outer washer, jack, 0.6" Lock washer, jack, 0.5" (thin) Enclosure Enclosure screws PCB, main circuit PCB, footswitch PCB, input/output/DC LUNA OPTICAL TREMOLO...
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Page 6: Tools Needed
The tip should used to tighten the dress nut to avoid lot of pedals! be no more than 0.1” (2.5mm) wide. scratching or denting it (which can happen with metal tools). LUNA OPTICAL TREMOLO... -
Page 7: Component Identification
It’s recommended to use a also look like this. They may also look like this. razor blade to separate have more than 8 legs. these cleanly. WIRE ASSEMBLY WIRE ASSEMBLY HEADER DC JACK LED BEZEL VACTROL / OPTOCOUPLER LUNA OPTICAL TREMOLO... -
Page 8: Hardware Identification
MOUNTING NUT DRESS NUT LOCK WASHER DIAMETER: 0.36” / 9.1mm DIAMETER: 0.375” / 9.5mm DIAMETER: 0.4” / 10.1mm FOOTSWITCH MOUNTING NUT DRESS NUT LOCK WASHER DIAMETER: 0.6” / 15.2mm DIAMETER: 0.77” / 19.6mm DIAMETER: 0.6” / 15.2mm LUNA OPTICAL TREMOLO... -
Page 9: Pcb Assembly Overview
6. Transistors 7. Electrolytic capacitors Not all of these component types are included in each kit, so skip them if they aren’t applicable. Some types of film capacitors are taller than electrolytics, so those can be done last. LUNA OPTICAL TREMOLO... -
Page 10: Resistors
10 to 15 resistors at a time or the bottom of the board will get too crowded. If this is your first time soldering, watch tutorial videos on YouTube and make sure you get it down before you begin. You don’t want to practice or experiment on this board! LUNA OPTICAL TREMOLO... -
Page 11: Diodes
VALUE 1N5817 1N914 1N914 Next, you’ll populate the diodes. Diodes are polarized, so make sure to identify the polarity band (which indicates the “cathode”, or negative side) and match the band to the footprint on the PCB. LUNA OPTICAL TREMOLO... - Page 12 ICs may have two different orientation marks: either a dot in the upper-left or a half-circle notch in the middle of the top side. Some ICs have both marks. This shows which way the IC should be rotated when inserting it into a socket (the socket also has a half-circle notch). LUNA OPTICAL TREMOLO...
- Page 13 Now we’ll do the JFET transistor. If the legs of the transistor are not already bent into 0.1” spacing, use your needle-nose pliers to bend the outer two legs as shown in the diagram below. Bend the outer leads to hold it in place on the board. Then, solder them and clip the leads. LUNA OPTICAL TREMOLO...
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Page 14: Capacitors (Non-Polarized)
Usually the red ones have it printed on the side while the blue or gray ones have it on the top. C4 (330pF MLCC) is always blue, and C11 (100n MLCC) is always yellow. It can be hard to read the codes since they’re so small, so it’s easier to identify them by color. LUNA OPTICAL TREMOLO... -
Page 15: Wire Headers
They do fit pretty tightly in the holes, though, so press firmly. There’s also a 4-pin header on the I/O board that we will do in a later step. LUNA OPTICAL TREMOLO... -
Page 16: Capacitors (Polarized) & Vactrol
With the label side face-up, rotate the vactrol so that the “+” marking aligns with the square hole in the upper-right. Since the LED side and LDR side have different spacing between the leads, it should be clear which way to align it, but verify the orientation before soldering. LUNA OPTICAL TREMOLO... -
Page 17: Footswitch Pcb
BLUE MARKING Once all three wire assemblies are soldered, set the footswitch PCB aside. We’ll solder the actual footswitch and LED in a later step. LUNA OPTICAL TREMOLO... -
Page 18: Input/Output Pcb
Red is positive (+), black is negative (-). After soldering, pull it tight. For even more strain relief, you can thread the snap through the loop to form a knot. (not shown) LUNA OPTICAL TREMOLO... -
Page 19: Enclosure Layout: Panel Mounts
You’ll need to hold the bezel in place when OUTER WASHER tightening the nut. The top of the bezel is sharp, so MOUNTING NUT try using a rubber band for grip instead of pressing your finger against it directly. LUNA OPTICAL TREMOLO... -
Page 20: Enclosure Layout: Main & Footswitch Pcbs
However, Aion FX projects are designed to be simple and straightforward to remove from the enclosure for troubleshooting, with no desoldering required—so with these kits, it’s actually much easier to “box it before you rock it”. -
Page 21: Enclosure Layout: Input/Output Pcb
Note the use of two mounting nuts on each of the jacks, one inside and one outside. The inner nut acts as a spacer to set the DC jack flush with the outside of the enclosure. The inner nuts should be threaded as far down as they can go. MOUNTING NUT OUTER WASHER LOCK WASHER MOUNTING NUT 125B LUNA OPTICAL TREMOLO... -
Page 22: Final Testing & Assembly
Be careful not to over-tighten or you may damage the set screw. But if it’s not tight enough, the knob will be more likely to fall off or lose its alignment with the markings on the enclosure. Last, just close the panel on the back using the four screws. That’s it! LUNA OPTICAL TREMOLO... -
Page 23: Schematic
SCHEMATIC 100k 1N5817 100uF 47uF 100n 220k VACTROL_B IC2A 100kC TL022 RATE 10uF IC2B TL022 220k RATE_LED IC1B IC1A 2N5457 TL072 TL072 VACTROL_B 50kA VOLUME 330pF LUNA OPTICAL TREMOLO... -
Page 24: Full Parts List
100uF electro 1N914 330pF MLCC 47uF electro 100n MLCC 10n (0.01) Potentiometers Switches Other PART VALUE PART VALUE PART PART TL072 Depth 3PDT stomp VTL5C3 vactrol TL022 Rate 100kC Smooth 500kB Spacing 500kB Symmetry 500kB Volume 50kA LUNA OPTICAL TREMOLO... -
Page 25: Troubleshooting Information
Rate control. VOLTAGE VOLTAGE VOLTAGE 4.65 0.63 ~ 8.64 9.35 4.65 2.63 ~ 6.46 1.86 4.64 2.52 ~ 6.40 4.65 2.57 ~ 6.51 4.66 2.57 ~ 5.94 4.66 2.57 ~ 5.94 9.34 9.35 LUNA OPTICAL TREMOLO... - Page 26 “goop” the PCB or otherwise obscure the source. In other words: you don’t have to go out of your way to advertise the fact that you use Aion FX kits, but please don’t go out of your way to hide it.
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Page 27: Legal Information
These kits are intended to be built by the customer. Aion FX is not responsible for language that may be used by the customer in the marketing or resale of the finished product.
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