polypus at large

[Inconuucl]

Wait, what are you using to program this?

[autopilot]

the lfo is generated via a microcontroller (coded in c)

[01010111]

After reading through everything again, it sounds like these'll be the features?

sequencer that modulates the rate division
lfo that modulates depth (what we normally think about with tremolo)
lfo to modulate the other lfo?
drive/gain (possibly with option to modulate via lfo)
tone (lfo modulated maybe?)
volume
shape
tap tempo (external tap input)
mix

Is that right?

[autopilot]

the tone modulation is a no go, i still need to work with the gain modulation (sync to the lfo).

Yes the sequencer (5 steps sequencer with option to select 3/4/5 steps) is modulating the main LFO tap ratio (the one that sweeps the volume to create tremolo, ratios are x1, x2, x3, x4 or x8 of the original tap). The sequencer will run in 2 forms, manual you press a footswitch and it will advance to next step or it will be always running advancing through the steps (based on the same frequency of your tap x1)

Option to add another LFO that will modulate the mix (so its like a tremolo inside another tremolo), this lfo will be also running on the same frequency of your tap, but you could change the wave, but the amount will be full so it will go from no trem to a complex trem pattern (depending if you also have the sequencer going).

I added this image so you have a better idea: imagine the sinusoidal carrier is your trem sound (running x4 of the tap based on the sequencer step), the baseband signal is the extra lfo (running x1 by default of the tap and also as sinusoidal wave). The amplitude modulation will be the output soundwise, a trem that is running into another slower trem. But if you start playing with waveshapes and adding the sequencer you could go into a new

knobs -
5 steps knobs (rate)
Lfo Wave
Vol
Gain (overdrive territory)
Tone
Extra LFO Wave

Toggles:
3/4/5 sequencer length
sync the extra LFO
Sequencer Manual or Auto Scroll

Footswitches
Bypass
Tap
And Scroll (manual advance of the sequencer)

external tap jack

Attachments

[Inconuucl]

Couldn't the seq lenght toggle be a rotary knob to have all of the lengths?

[autopilot]

you could cheat:

only one step (set it to manual and never step the scroll footswitch)
2 steps (set it to 4, and set the 1 and 3 steps to the same ratio, and 2 and 4 to the same ratio)
3 steps set the toggle to 3
4 steps set the toggle to 4
5 steps set the toggle to 5

the sequencer will reset to 1 in bypass mode, so every time you activate the pedal it will start from step 1

[01010111]

you could cheat:
...
2 steps (set it to 4, and set the 1 and 3 steps to the same ratio, and 2 and 4 to the same ratio)
...
the sequencer will reset to 1 in bypass mode, so every time you activate the pedal it will start from step 1

That two-step sequencer could also be used to artificially divide the clock time of the sequencer relative to the LFOs. That restart feature's so cool! Does that mean it uses soft-touch switching?

[autopilot]

the restart is linked to the bypass, so it wont be a soft touch. When the pedal enters bypass the sequencer will automatically reset to step 1.

The soft switches are for tap and manual scroll.

with the sequencer you can do some variations, for example if you have the mix lfo set to square at 60 bpm, and the tremolo lfo set to sine and the following ratios: x2(120bpm) x4 (240bpm) x3(180bpm) x 1 (60 bpm)

step 1: it will be 30 bpm of no modulation and 30 bpm modulating 120 bpm (no mod and then 1 sweeps)

step 2: it will be 30 bpm of no modulation and 30 bpm modulating 240 bpm (no mod and then 2 sweeps)

step 3: it will be 30 bpm of no modulation and 30 bpm modulating 120 bpm (no mod and then 1.5 sweeps)

step 4: it will be 30 bpm of no modulation and 30 bpm modulating 60 bpm (no mod and then half sweep)

[01010111]

Cool! It sounds like the sequencer works exactly like I thought it would! Having the LFOs sweep different different things is going to make for some really cool tonal variations on top of just having a complex waveform!!

[autopilot]

cases are here, so i need to hurry up and finish the pcb layout

[Inconuucl]

cases are here, so i need to hurry up and finish the pcb layout

Preview?

[autopilot]

Next week, was waiting on a batch of ic's, so it can get some crunch on the gain, instead of light od

[01010111]

That sounds like it'd be great for creating synthy, rhythmic, pulses!

[autopilot]

the gain/drive knob is out, i replaced with a knob to control the amount of the second lfo, because it provides much more control, soon very soon

[Inconuucl]

the gain/drive knob is out, i replaced with a knob to control the amount of the second lfo, because it provides much more control, soon very soon