Hydra Delay hidden fonction ?

[sbn31]

Hi ! By serandipity i found an hidden fonction on the hydra delay. I used on/off/on spdt switch instead of on/off spdt switch. So I get:

Head 1 Head 2 Head 3 Head 4
Switch pos1 On On On On2
Switch pos 0 Off Off Off On1
Switch pos 2 Off Off Off Off

you can seen there are no changes on the 3 first heads but on head4 I get 2 "on" positions:
On 1 = normal
On 2 = is the hidden fonction, the volume is a bit louder than On1, and when tweaking the swell pot the delay can run into self oscillation/infinite feedback. It can't do this in normal mode.

Cheers !

 

[comradehoser]

Head 4 is the rightmost or the leftmost switch?

If I read correctly, I only have to install the on-off-on to position 4, correct?

 

[sbn31]

Hi head 4 corresponding to the rightmost switch when you are looking the pedal from top.
And yes the on-off-on switch go on position 4 (head 4) only.
Cheers !

 

[ICTRock]

not exactly hidden

Thread 'Understanding the Hydra Switches - Schematic Analysis'

May 1, 2024

Found this schematic of the Hydra circuit in the forum, and I'm trying to understand how the switches work in tandem with the FV1. Pins 16, 17 and 18 (S0, S1 and S2 respectively) are connected to three of the switches, one each. The pinouts refer to these as related to program selection, so I'm imagining that when the heads are turned on or off it's actually a different program on the EEPROM. I've been wondering how 1P8T switches work for these FV1 circuits as well, but admittedly haven't checked out a schematic of one yet (guess I'll go check this out later on today).

More of a...

• airbud
• Replies: 2
• Forum: General Questions

 

[jwin615]

Looking at the schem in the thread @ICTRock posted-- I think head4 on2 is just head 4 on
Head 4 On1 would still be head 4 off.
Or maybe inverse of that. But I think that's correct.

 

[sbn31]

not exactly hidden
[EMBEDNot exclatly hidden but not as explicit as i say.

 

[sbn31]

Looking at the schem in the thread @ICTRock posted-- I think head4 on2 is just head 4 on
Head 4 On1 would still be head 4 off.
Or maybe inverse of that. But I think that's correct.

Yes on2 is head 4 but a bit louder than on1 , and this volume a bit louder is enough to run the delay into self oscilation when tweaking the swell pot, this can't be acheived with on1 because volume just too low. That's it

 

[Paradox916]

Another way to drive the Hydra into oscillation and be able to control it hook lugs 2 and 3 ( if I remember correctly, could be 1 and 2 instead, it’s been a while since I did it) of the swell and speed pots to a 5k or 10k dual gang and a dpdt momentarily definitely works best with heads 2 and 4 on. The dual gang will let you control the ramp up.

 

[Robert]

The toggle switch for head 4 acts like a volume control that is either all the way on (3.3V) or all the way off (0V).

When your toggle switch is in the center position the FV-1 pin is left floating somewhere between 0 - 3.3V, so it's giving a third setting with reduced volume compared to the normal "ON" position.

 

[sbn31]

The toggle switch for head 4 acts like a volume control that is either all the way on (3.3V) or all the way off (0V).

When your toggle switch is in the center position the FV-1 pin is left floating somewhere between 0 - 3.3V, so it's giving a third setting with reduced volume compared to the normal "ON" position.

No all the switch "head" have the same volume, but position on2 on head 4 is louder.

 

[ICTRock]

 

[Feral Feline]

Chew that popcorn with your mouth closed, FFS.

Son, Ah say, sonny, pay attention when the deeziner of the PCB yer yoozin is tawkin’ to yuh; hold one hand to the side of yer head so’s the pearls don’t go straight through and fall out the other side and the wisdom’s wasted on feeding the piggledywigglies. Friendly advice, I’m tellin’ you, son, in yer best interests, like breathing.

 

[BrainDrain]

No all the switch "head" have the same volume, but position on2 on head 4 is louder.

I think what he's saying is that the middle position on head 4 is the "bonus".

"ON 1" - regular mode (stock functioning, head 4 switch up, normal loudness)
"ON 2" - bonus mode (head 4 switch in middle position, which would be quieter)