Walrus Audio SLO (reverb)
- Thread starter Kroars
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Ctrl4Smilerz
Well-known member
I believe the Slo is based on FV-1, so this should be possible in theory.
Feral Feline
Well-known member
By Godot, Kroars, this deserves an upvote. You're one of the few to put any additional effort into demonstrating why something should be reconstituted by PPCB.
Thank you.
Hmm, maybe if this comes to fruition, I could add a Soldanao SLO circuit to it ... a SLO + SLÖ, and call it the SLOth. HMm, nevermind.
Thank you.
Hmm, maybe if this comes to fruition, I could add a Soldanao SLO circuit to it ... a SLO + SLÖ, and call it the SLOth. HMm, nevermind.
Robert
Reverse Engineer
Not sure how easy the algorithms would be to obtain, but it’s worth a shot to ask
Getting the algorithms is simple, but we can't use them.... I don't touch proprietary code.
We can come up with something functionally similar though.
Kroars
Well-known member
I see. Thanks for clearing that up, I wasn’t sure how that worked.
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iamjackslackof
Well-known member
Curious about how you'd get them. Dump the flash memory or something? I get why you can't use them, but I'm interested in the technical details in acquiring the algorithm. I'm familiar with dumping firmware on embedded devices and I wonder if this is similar.
Not to be overly critical but out side of the dream mode I found the Slo to be a little underwhelming. Dark mode is a sub octave reverb that to me was hard to make super useful, rise is a gated swell reverb that works pretty good unless you are running in an effects loop. The modulation was really strong if dialed in too much so I think it could be paired back quite a bit to make it useable. Dream mode sounded excellent and the freeze effect is nice.
Just my thoughts not trying to be a downer
Just my thoughts not trying to be a downer
Kroars
Well-known member
Not at all! That’s why this forum is great! The reality is, I don’t know much about it at all, just saw a couple clips. I certainly appreciate your perspective, perhaps it’s not one that needs to be on my immediate radar.
bhcarpenter
Well-known member
Yeah. Programs for FV-1 are typically stored on an EEPROM (although I seem to remember a project somewhere that used an Arduino to emulate the EEPROM).
Something like this would do it: https://www.amazon.com/KeeYees-SOIC...words=ch341a+programmer&qid=1676333416&sr=8-3
Feral Feline
Well-known member
That Dark Mode sub-octave would be fun to play around with for the bass players. Maybe.
I'm interested in it just for the freeze effect. Other effects would be icing...
Also, I did not see ADAOCE's post as downer, but rather as additional perspective on this effect. Always happy to see things from another's perspective — informed and enriched is good.
I'm interested in it just for the freeze effect. Other effects would be icing...
Also, I did not see ADAOCE's post as downer, but rather as additional perspective on this effect. Always happy to see things from another's perspective — informed and enriched is good.
jhaneyzz
Well-known member
Interesting. I have a Slötva (SLO with presets) and have found the Rise to be hard to use. However, I have it in the effects loop and you imply that this is a problem. Why is that?
jwyles90
Well-known member
My amp doesn't have an effects loop, so I can't speak from experience but they mention in the manual that Rise mode works best in front of an amp. My guess would be that it has something to do with the way the signal hits the pedal differently between the two? I've found Rise mode to be a little finicky as well, but when it's dialed in right it's pretty cool. I think having the "X" knob set to like noon or less makes it easier to get cool sounds out of.
jhaneyzz
Well-known member
I did some research last night and according to a bunch of folks, the signal in the effects loop is not generally high enough to trigger the gate of the effect. ( in the Rise mode it is effectively like a noise gate)
This tracks with my experience. If I turn up the volume of ANY pedal the Rise kicks in.
Some folks recommended sticking a boost in the effects loop.
Seems to me that the Slö would work pretty well before the effects loop, but I haven't tried it yet.
This tracks with my experience. If I turn up the volume of ANY pedal the Rise kicks in.
Some folks recommended sticking a boost in the effects loop.
Seems to me that the Slö would work pretty well before the effects loop, but I haven't tried it yet.
sticky1138
Well-known member
So to simplify it for dummies such as myself, are you saying you would take this device, clip it into the EEPROM in an FV-1-based pedal, the other end to a blank EEPROM, transfer (i.e. steal), and then you'd use that copied EEPROM in a PCB with the same circuit/control layout? Would it function in the Pythagoras/Arachnid (of course the controls wouldn't necessarily correlate)?
Digital is indistinguishable from magic to me.
bhcarpenter
Well-known member
More or less. You’d need to copy the EEPROM to a computer. Then disconnect that device from the pedal and connect it to a blank EEPROM and use your computer to program it.
** I am not a lawyer, but software is generally protected under copyright and licensing rules, so this would likely be illegal. **
No telling if it would work in a Pythagoras or not verbatim. Often they require custom circuits. For example, I believe the feedback path of the ARP-87 is analog.
** I am not a lawyer, but software is generally protected under copyright and licensing rules, so this would likely be illegal. **
No telling if it would work in a Pythagoras or not verbatim. Often they require custom circuits. For example, I believe the feedback path of the ARP-87 is analog.
Yes the Slo works outside of the effects loop or with a boost in the loop just fine but in the loop by itself it rarely triggered
Sorry just saw your quote of my post now. Your research is spot on it’s gating the incoming signal to trigger the sweep effect and if it’s too low or just doesn’t trigger like it should
Robert
Reverse Engineer
It's best to remove the EEPROM from the PCB before connecting it to an EEPROM programmer.
Most EEPROM programmers run at 5V, the FV-1 IC runs at 3.3V. If you clip the device onto the EEPROM in-circuit it'll hit the FV-1 with overvoltage.
sticky1138
Well-known member
Not actually going to attempt this, but just trying to wrap my mind around the process. So technically it's pretty easy to rip off someone's code, as Mooer did to EHX with their POG clone.
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