Akashic Guitar effects circuit lookup
DRYEFFECTCONTROL 1CONTROL 2CONTROL 3

Enclosure not stated · 5 knobs

Dirtbox Layouts

Madbean Headtrip 2Verified

Based on the Madbean Headtrip 2

Category
Delay
Controls
Dry · Effect · Control 1 · Control 2 · Control 3
Build
Vero· 28×25· 51 cuts, 30 links
Layout
Verified · Dirtbox Layouts marks it as built and working
Tags
Chris Stelloh, Delay, Envelope, Filter, Madbean, Modulation, Octave, Reverb, Spin FV-1, Tremolo

From the post

Once again, a guest appearance. Chris at CDC was brave enough to dabbling with some Spin FV-1 processors. Yes, these are SMD parts there is several vendors online that sell adapter boards. This one is VERIFIED.

Since I started building effects in 2020, there has been a "level up" step I've been avoiding. As the level digital signal processing that is available through industry standard effect makers like TC Electronic, Boss, Line 6 and Strymon filters down to the DIY/hobbyist level - there really is no excuse for not at least TRYING digital signal processing. The most commonly available engine of these DSP effects is the Spin FV-1 reverb processor. They are about $10-$15 each and have 28 tiny little surface mount legs that need to be soldered to tiny little pads on the circuit board without any bridging. So I've been squeamish and avoided them. Until now (dun dun). After about 3 years of doing this I felt like my dexterity and soldering iron proficiency had progressed to the point where I shouldn't put this off any longer. I also MUST thank DK pedals for their tutorial that was a serious confidence builder. This effect contains that chip - soldered to an adapter board designed by MAS Effects, which is attached to my stripboard layout of the Madbean Headtrip 2 FV-1 project. It also contains the algorithm chip from that project featuring the presets designed by Brian of Madbean.. The 5 knobs are for dry and effect level, as well as three parameters that change with each effect preset. There's a lot to cover with this pedal, which is why my video is about 5 times longer than anything I've posted so far... if you make it through all 8 clips, I salute you!!! Mode 1: Choir - similar to the EQD organizer, with the controls condensed to three knobs: octave down, octave up, and choir (which has a slight delay on the signal) Mode 2: Filter+Octave - an envelope follower that is controlled by knobs 1&2, with an octave up and down dialed in by knob 3. Mode 3: Detune+Tremolo - this is similar to the "detune" mode on the Whammy pedal. Its's a faux chorus of sorts. Knobs 2&3 control the speed and depth of the tremolo Mode 4: Flangecho - an 850ms delay. Length and repeats are knobs 1&2, flanging level in the repeats is knob 3. Mode 5: Echo+??? - a 975ms delay. Knobs 1&2 are the same as mode 4. Knob 3 controls a multi effect that goes from modulation to buzzy ring modulation to tremolo in the repeats. Mode 6: Flangeverb - knob 1 is the reverb level, knob 2 is the low cut, knob three blends in a similar flange modulation as on mode 4. Mode 7: Choirverb - a "shimmer" reverb with verb level on 1, low cut on 2, and octave up & down on knob 3. Mode 8: 4th/5thverb - reverb level on knob 1, 4th down on knob 2, 5th up on knob 3. This doesn't show quite as much on the video but this is definitely the most organic/analog synth-sounding patch of these 8 (in my opinion) Now the footswitches: the left switch is a "master on/off" that byp

Schematic

This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.

Parts list 32 rows

Report a wrong parse

Got parts in a drawer? See what you can build with them.

Check before you build · 3 values the reader of this layout was not sure of
  • EEPROM (8-pin DIP, bottom left): no part number given on the drawing
  • X1 printed in legend as '32768 crystal' (32.768 kHz watch crystal)
  • 10k at column 9 rows F-H and the three 20k under the FV-1 are drawn greyed/translucent; read as fitted parts
RefValueNormalizedTypeNotes
Resistors 8
×31k1kread from the layout by eye
×21m1Mprinted '1m', i.e. 1M; read from the layout by eye
×4100k100kread from the layout by eye
×610k10kread from the layout by eye
×620k20kthree sit under the FV-1 adapter; read from the layout by eye
×133k33kread from the layout by eye
×1100R100must be 1/4W; read from the layout by eye
×1??LED resistor, value not given; read from the layout by eye
Capacitors 11
×115pF15pread from the layout by eye
×1220pF220pread from the layout by eye
×1470pF470pread from the layout by eye
×11nF1nread from the layout by eye
×110nF10nread from the layout by eye
×4100nF100nread from the layout by eye
×1220nF220nread from the layout by eye
×11uF1ufilm box; read from the layout by eye
×41uF1uelectrolytic; read from the layout by eye
×210uF10uelectrolytic; read from the layout by eye
×1100uF100uelectrolytic; read from the layout by eye
Diodes 2
D11N58171N5817read from the layout by eye
×91N9141N914D2-D10; read from the layout by eye
ICs 4
×1TL074TL074read from the layout by eye
×1FV-1FV-1on a 7x14 adapter; read from the layout by eye
×1EEPROMEEPROM8-pin, part number not given; read from the layout by eye
Q1L78L33L78L333.3V regulator, legend 'L78l33'; read from the layout by eye
Potentiometers 5
DryB50KB50kPotentiometerread from the layout by eye
EffectB50KB50kPotentiometerread from the layout by eye
Control 1B50KB50kPotentiometerread from the layout by eye
Control 2B50KB50kPotentiometerread from the layout by eye
Control 3B50KB50kPotentiometerread from the layout by eye
Switches 1
SW1P8T rotary1P8T ROTARYprogram select, lug 8 unconnected; read from the layout by eye
Other 1
X132768 crystal32768 CRYSTAL32.768 kHz crystal; read from the layout by eye