Phantasmagoria - Switch System Rework

v2.1 to v2.11

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Why the rework?

The old switch assignments (fifth down, octave down, shimmer, accumulate) were functional but felt like disconnected add-ons bolted onto the side of the pedal. In actual use, they weren't getting flipped - they didn't change the feel of the instrument, they just added more layers on top.

The goal of the rework was simple:

• Every switch should be clearly audible
• Every switch should feel worth using
• The pedal should feel like one unified instrument, not a base effect with optional extras

---

The New Switch Identity

Switch	Label	Role	What it changes
SW1	REV	Time direction	Forward vs Reverse delay
SW2	ROOM	Spatial world	Standard delay+reverb vs Chamber memory folds into repeats
SW3	HALO	Ambient aura	Normal wet field vs Detached trailing ghost layer
SW4	EVOL	Frozen world	Stable frozen anchor vs Living, breathing frozen texture

Design principle: We're not adding effects. We're changing how the existing system behaves.

---

Switch Details

SW1 - REV (unchanged)

The core time-direction switch. Remains the most fundamental alternate world of the pedal.

State	Behavior
OFF	Forward delay
ON	Reverse delay

---

SW2 - ROOM (new)

The room becomes part of the repeat structure instead of sitting beside it as a separate layer.

State	Behavior
OFF	Standard delay to reverb routing
ON	Chamber memory folds into the delay world

Intended feel: Playing into an active haunted room rather than into a delay pedal with a reverb after it.

---

SW3 - HALO (new)

Adds a detached late aura behind the wet signal - a trailing ghost layer that lives behind the repeats and reverb.

State	Behavior
OFF	Normal wet field
ON	Atmospheric after-image trails behind the effect

Intended feel: A second shadow of the note, living behind the main effect field. Present but not dominant.

---

SW4 - EVOL (new)

Controls whether the frozen layer is a stable bed or a slowly evolving living texture.

State	Behavior
OFF	Mostly stable frozen anchor
ON	Frozen layer slowly lives and moves

Intended feel: The freeze becomes alive without turning into obvious pitch wobble or chaotic movement.

---

What got removed

The old pitch engine (fifth down / octave down / shimmer) was removed from the active switch architecture. Those behaviors didn't help the pedal feel more unified and were replaced by switch roles that better support the core identity.

---

Other changes in this version

Tape warble now affects reverse delay

K4 (tape depth) and K5 (LFO speed) were only modulating the forward delay read. The reverse grain reader was running on a fixed clock with no warble at all. Both directions now share the same tape modulation, so flipping SW1 to reverse feels like part of the same instrument instead of a completely separate effect.

Freeze survives bypass

Turning the main effect off no longer kills an active frozen layer. Bypassed output is now:

• Freeze inactive: dry only
• Freeze active: dry + freeze

This is intentional - freeze remains musically useful as its own layer even when the main delay is bypassed.

Bypass transition drop fixed

Output routing was reworked so toggling the effect off no longer causes a brief signal dip. The dry path crossfades back in smoothly while the wet path fades out.

K5 control law reshaped

LFO speed control was reshaped so the sweet spot is broader and more usable across the knob travel. The most musical range no longer arrives too early and disappears too quickly.

Output routing cleaned up

Core effect path and freeze path are now treated as separate signal routes. Freeze behavior stays intentional and isn't incorrectly tied to the main bypass state.

---

The result

The pedal now behaves more like a complete instrument:

Switch	Changes...
REV	the time world
ROOM	the spatial world
HALO	the ambient aura
EVOL	the frozen world

The switch section supports the pedal's identity instead of feeling like a set of spare extra features.

Phantasmagoria - Switch System Rework

v30c to v31

---

Why the rework?

The old switch assignments (fifth down, octave down, shimmer, accumulate) were functional but felt like disconnected add-ons bolted onto the side of the pedal. In actual use, they weren't getting flipped - they didn't change the feel of the instrument, they just added more layers on top.

The goal of the rework was simple:

• Every switch should be clearly audible
• Every switch should feel worth using
• The pedal should feel like one unified instrument, not a base effect with optional extras

---

The New Switch Identity

Switch	Label	Role	What it changes
SW1	REV	Time direction	Forward vs Reverse delay
SW2	ROOM	Spatial world	Standard delay+reverb vs Chamber memory folds into repeats
SW3	HALO	Ambient aura	Normal wet field vs Detached trailing ghost layer
SW4	EVOL	Frozen world	Stable frozen anchor vs Living, breathing frozen texture

Design principle: We're not adding effects. We're changing how the existing system behaves.

---

Switch Details

SW1 - REV (unchanged)

The core time-direction switch. Remains the most fundamental alternate world of the pedal.

State	Behavior
OFF	Forward delay
ON	Reverse delay

---

SW2 - ROOM (new)

The room becomes part of the repeat structure instead of sitting beside it as a separate layer.

State	Behavior
OFF	Standard delay to reverb routing
ON	Chamber memory folds into the delay world

Intended feel: Playing into an active haunted room rather than into a delay pedal with a reverb after it.

---

SW3 - HALO (new)

Adds a detached late aura behind the wet signal - a trailing ghost layer that lives behind the repeats and reverb.

State	Behavior
OFF	Normal wet field
ON	Atmospheric after-image trails behind the effect

Intended feel: A second shadow of the note, living behind the main effect field. Present but not dominant.

---

SW4 - EVOL (new)

Controls whether the frozen layer is a stable bed or a slowly evolving living texture.

State	Behavior
OFF	Mostly stable frozen anchor
ON	Frozen layer slowly lives and moves

Intended feel: The freeze becomes alive without turning into obvious pitch wobble or chaotic movement.

---

What got removed

The old pitch engine (fifth down / octave down / shimmer) was removed from the active switch architecture. Those behaviors didn't help the pedal feel more unified and were replaced by switch roles that better support the core identity.

---

Other changes in this version

Freeze survives bypass

Turning the main effect off no longer kills an active frozen layer. Bypassed output is now:

• Freeze inactive: dry only
• Freeze active: dry + freeze

This is intentional - freeze remains musically useful as its own layer even when the main delay is bypassed.

Bypass transition drop fixed

Output routing was reworked so toggling the effect off no longer causes a brief signal dip. The dry path crossfades back in smoothly while the wet path fades out.

K5 control law reshaped

LFO speed control was reshaped so the sweet spot is broader and more usable across the knob travel. The most musical range no longer arrives too early and disappears too quickly.

Output routing cleaned up

Core effect path and freeze path are now treated as separate signal routes. Freeze behavior stays intentional and isn't incorrectly tied to the main bypass state.

---

The result

The pedal now behaves more like a complete instrument:

Switch	Changes...
REV	the time world
ROOM	the spatial world
HALO	the ambient aura
EVOL	the frozen world

The switch section supports the pedal's identity instead of feeling like a set of spare extra features.

Phantasmagoria v31 - First Public Release

A spectral shimmer delay for the PedalPCB Terrarium guitar pedal, built on the Daisy Seed microcontroller.

Combines reverse delay, pitch shifting (fifth down, octave down, octave up shimmer), freeze with layer accumulation, tape warble, and an echo chamber reverb, all in one pedal.

⚡ Flash to your pedal (no coding required)

1. Download phantasmagoria.bin below.
2. Hold BOOT on your Daisy Seed, tap RESET, then release BOOT.
3. Open flash.daisy.audio in Chrome or Edge.
4. Click the File Upload tab.
5. Click BROWSE... and select the .bin file you downloaded.
6. Click the FLASH button (this may prompt you to select your Daisy Seed from a browser popup).
7. Done!

🪟 Windows Users: Web Flasher Not Working?

If your Windows PC doesn't recognize the Daisy Seed in the browser flasher, you need to replace the default USB driver with WinUSB.

1. Put your Daisy Seed in BOOT mode (Hold BOOT, tap RESET, release BOOT).
2. Download and run Zadig.
3. Go to Options > List All Devices.
4. Select DFU in FS Mode (or STM32 BOOTLOADER) from the main dropdown menu.
5. Ensure the target driver with the green arrow points to WinUSB.
6. Click Replace Driver.
7. Refresh the web flasher page and try connecting again.

Controls

Control	Function
Knob 1	Delay Time
Knob 2	Feedback
Knob 3	Reverb Mix
Knob 4	Tape Warble Depth
Knob 5	LFO Speed
Knob 6	Dry/Wet Mix
SW1	Reverse Delay on/off
SW2	Fifth Down on/off
SW3	Octave Down on/off
SW4	Shimmer (Octave Up) on/off
FS1	Bypass
FS2	Freeze - tap to toggle, hold to accumulate layers

Requirements

• PedalPCB Terrarium with Daisy Seed
• Chrome or Edge browser for flashing

Known good on

• Daisy Seed hardware revision 7
• 48kHz sample rate, block size 1