# Hothouse Desktop Chain DSP

## Description

Three\-stage stereo DSP effects processor using three Electrosmith Daisy Seed modules, shared 9V\-to\-5V power, panel controls, USB MIDI, and internal stereo audio chaining\.

## Project Details

- **Owner:** funkyboss
- **Created:** 5/16/2026
- **Last Updated:** 5/17/2026
- **Visibility:** Public
- **Connectivity:** Stereo unbalanced 1/4 inch TS audio I/O, internal stereo audio chain, three USB Micro\-B ports for MIDI/DFU\.
- **Implementation Details:** Architecture calls for three identical 90 mm x 70 mm unit PCBs plus one 90 mm x 40 mm power/interconnect PCB in a Hammond 1455Q2201\-style enclosure\.
- **Operating Voltage:** 9V
- **Power Requirements:** 9 V DC center\-positive barrel input, 500 mA minimum supply; shared 5 V regulated bus for three Daisy Seed modules\.
- **Domain:** Audio / Desktop DSP Effects Processor
- **Human Interface:** 18 potentiometers, 9 SPDT toggle switches, 3 status LEDs, BOOT access holes\.

## Key Components

### D1 — [1N5817RLG](https://flux.ai/lcsc/1n5817rlg~el8y.md)

- Role Details: Series Schottky diode before buck regulator input
- Package or Case Code: DO\-15\_BD3\.1\-L6\.7\-P10\.70\-D0\.9\-RD
- Manufacturer Part Number: 1N5817RLG
- Product Info Url: https://lcsc\.com/product\-detail/Others\_ON\-Semicon\_1N5817RLG\_ON\-Semicon\-ON\-1N5817RLG\_C232461\.html
- JLCPCB Part Class: Extended Part
- Role: Reverse Polarity Protection
- LCSC Part Number: C232461
- Manufacturer Name: onsemi\(安森美\)
- Part Type: Schottky Barrier Diodes \(SBD\)
- Datasheet URL: https://lcsc\.com/product\-detail/Others\_ON\-Semicon\_1N5817RLG\_ON\-Semicon\-ON\-1N5817RLG\_C232461\.html

**Pins:**
- A [pin 2]
- C [pin 1]

### F1 — [MF\-MSMF050\-2](https://flux.ai/adrian95/mf-msmf050-2~8fg.md)

- Role Details: 500mA hold PTC sized for \~294mA 9V input current at 85% buck efficiency; protects 9V input path
- Manufacturer Name: Bourns Inc\.
- Manufacturer Part Number: MF\-MSMF050\-2
- Datasheet URL: https://www\.bourns\.com/docs/product\-datasheets/mf\-msmf\.pdf
- Part Type: Fuse
- Role: Protection
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- P1 [pin 1]
- P2 [pin 2]

### J1 — [PJ\-037A](https://flux.ai/vasy_skral/pj-037a~6cq.md)

- Role Details: 2\.1mm ID / 5\.5mm OD barrel jack; 9V center\-positive input
- Part Type: Connector
- Manufacturer Name: CUI Devices
- Manufacturer Part Number: PJ\-037A
- Role: Power Input
- Datasheet URL: https://www\.cuidevices\.com/product/resource/pj\-037a\.pdf

**Pins:**
- Center pin [pin 1]
- Terminal [pin 2]

### J10 — [B2B\-PH\-K\-S\(LF\)\(SN\)](https://flux.ai/jecstronic/b2b-ph-k-slfsn~nss.md)

- Manufacturer Part Number: B2B\-PH\-K\-S\(LF\)\(SN\)
- Role Details: Unit 2 OUT R: signal plus ground
- Manufacturer Name: JST Sales America
- Symbol Style: parametric\-v1
- Part Type: Connector
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1811151524\_JST\-Sales\-America\-B2B\-PH\-K\-S\-LF\-SN\_C131337\.pdf
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Audio Connector

**Pins:**
- PIN1 [pin 1]
- PIN2 [pin 2]

### J11 — [B2B\-PH\-K\-S\(LF\)\(SN\)](https://flux.ai/jecstronic/b2b-ph-k-slfsn~nss.md)

- Role: Audio Connector
- Manufacturer Part Number: B2B\-PH\-K\-S\(LF\)\(SN\)
- Manufacturer Name: JST Sales America
- Symbol Style: parametric\-v1
- Role Details: Unit 3 IN L: signal plus ground
- Part Type: Connector
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1811151524\_JST\-Sales\-America\-B2B\-PH\-K\-S\-LF\-SN\_C131337\.pdf
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- PIN1 [pin 1]
- PIN2 [pin 2]

### J12 — [B2B\-PH\-K\-S\(LF\)\(SN\)](https://flux.ai/jecstronic/b2b-ph-k-slfsn~nss.md)

- Role Details: Unit 3 IN R: signal plus ground
- Manufacturer Part Number: B2B\-PH\-K\-S\(LF\)\(SN\)
- Role: Audio Connector
- Manufacturer Name: JST Sales America
- Symbol Style: parametric\-v1
- Part Type: Connector
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1811151524\_JST\-Sales\-America\-B2B\-PH\-K\-S\-LF\-SN\_C131337\.pdf
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- PIN1 [pin 1]
- PIN2 [pin 2]

### J13 — [USB3070\-30\-A](https://flux.ai/jecstronic/usb3070-30-a~fj.md)

- Role: USB Panel Jack
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Name: GCT
- Manufacturer Part Number: USB3070\-30\-A
- Part Type: Connector
- Datasheet URL: https://gct\.co/files/specs/usb3070\-spec\.pdf
- Role Details: USB 1 panel Micro\-B receptacle routed to Unit 1 USB extension header

**Pins:**
- D\- [pin 2]
- D\+ [pin 3]
- GND [pin 5]
- ID [pin 4]
- MP1 [pin MP1]
- MP2 [pin MP2]
- VBUS [pin 1]

### J14 — [USB3070\-30\-A](https://flux.ai/jecstronic/usb3070-30-a~fj.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Name: GCT
- Manufacturer Part Number: USB3070\-30\-A
- Part Type: Connector
- Role: USB Panel Jack
- Datasheet URL: https://gct\.co/files/specs/usb3070\-spec\.pdf
- Role Details: USB 2 panel Micro\-B receptacle routed to Unit 2 USB extension header

**Pins:**
- D\- [pin 2]
- D\+ [pin 3]
- GND [pin 5]
- ID [pin 4]
- MP1 [pin MP1]
- MP2 [pin MP2]
- VBUS [pin 1]

### J15 — [USB3070\-30\-A](https://flux.ai/jecstronic/usb3070-30-a~fj.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Name: GCT
- Manufacturer Part Number: USB3070\-30\-A
- Part Type: Connector
- Datasheet URL: https://gct\.co/files/specs/usb3070\-spec\.pdf
- Role: USB Panel Jack
- Role Details: USB 3 panel Micro\-B receptacle routed to Unit 3 USB extension header

**Pins:**
- D\- [pin 2]
- D\+ [pin 3]
- GND [pin 5]
- ID [pin 4]
- MP1 [pin MP1]
- MP2 [pin MP2]
- VBUS [pin 1]

### J16 — [Pin Header 01x05 2\.54mm Vertical](https://flux.ai/adrian95/pin-header-01x05-254mm-vertical~cas.md)

- Role Details: VBUS, D\-, D\+, ID, GND to Unit 1 USB extension cable
- Role: USB Extension Header
- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: Connector

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]

### J17 — [Pin Header 01x05 2\.54mm Vertical](https://flux.ai/adrian95/pin-header-01x05-254mm-vertical~cas.md)

- Role: USB Extension Header
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: VBUS, D\-, D\+, ID, GND to Unit 2 USB extension cable
- Part Type: Connector

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]

### J18 — [Pin Header 01x05 2\.54mm Vertical](https://flux.ai/adrian95/pin-header-01x05-254mm-vertical~cas.md)

- Role Details: VBUS, D\-, D\+, ID, GND to Unit 3 USB extension cable
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: USB Extension Header
- Part Type: Connector

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]

### J2 — [B2B\-PH\-K\-S\(LF\)\(SN\)](https://flux.ai/jecstronic/b2b-ph-k-slfsn~nss.md)

- Manufacturer Part Number: B2B\-PH\-K\-S\(LF\)\(SN\)
- Role: Power Output Connector
- Role Details: JST\-PH 2\-pin 5V/GND feed to Unit 1
- Manufacturer Name: JST Sales America
- Symbol Style: parametric\-v1
- Part Type: Connector
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1811151524\_JST\-Sales\-America\-B2B\-PH\-K\-S\-LF\-SN\_C131337\.pdf
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- PIN1 [pin 1]
- PIN2 [pin 2]

### J3 — [B2B\-PH\-K\-S\(LF\)\(SN\)](https://flux.ai/jecstronic/b2b-ph-k-slfsn~nss.md)

- Manufacturer Part Number: B2B\-PH\-K\-S\(LF\)\(SN\)
- Manufacturer Name: JST Sales America
- Role Details: JST\-PH 2\-pin 5V/GND feed to Unit 2
- Symbol Style: parametric\-v1
- Role: Power Output Connector
- Part Type: Connector
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1811151524\_JST\-Sales\-America\-B2B\-PH\-K\-S\-LF\-SN\_C131337\.pdf
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- PIN1 [pin 1]
- PIN2 [pin 2]

### J4 — [B2B\-PH\-K\-S\(LF\)\(SN\)](https://flux.ai/jecstronic/b2b-ph-k-slfsn~nss.md)

- Manufacturer Part Number: B2B\-PH\-K\-S\(LF\)\(SN\)
- Role: Power Output Connector
- Manufacturer Name: JST Sales America
- Role Details: JST\-PH 2\-pin 5V/GND feed to Unit 3
- Symbol Style: parametric\-v1
- Part Type: Connector
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1811151524\_JST\-Sales\-America\-B2B\-PH\-K\-S\-LF\-SN\_C131337\.pdf
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- PIN1 [pin 1]
- PIN2 [pin 2]

### J5 — [B2B\-PH\-K\-S\(LF\)\(SN\)](https://flux.ai/jecstronic/b2b-ph-k-slfsn~nss.md)

- Manufacturer Part Number: B2B\-PH\-K\-S\(LF\)\(SN\)
- Manufacturer Name: JST Sales America
- Role: Audio Connector
- Symbol Style: parametric\-v1
- Part Type: Connector
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1811151524\_JST\-Sales\-America\-B2B\-PH\-K\-S\-LF\-SN\_C131337\.pdf
- Role Details: Unit 1 OUT L: signal plus ground
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- PIN1 [pin 1]
- PIN2 [pin 2]

### J6 — [B2B\-PH\-K\-S\(LF\)\(SN\)](https://flux.ai/jecstronic/b2b-ph-k-slfsn~nss.md)

- Manufacturer Part Number: B2B\-PH\-K\-S\(LF\)\(SN\)
- Manufacturer Name: JST Sales America
- Symbol Style: parametric\-v1
- Role Details: Unit 1 OUT R: signal plus ground
- Part Type: Connector
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1811151524\_JST\-Sales\-America\-B2B\-PH\-K\-S\-LF\-SN\_C131337\.pdf
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Audio Connector

**Pins:**
- PIN1 [pin 1]
- PIN2 [pin 2]

### J7 — [B2B\-PH\-K\-S\(LF\)\(SN\)](https://flux.ai/jecstronic/b2b-ph-k-slfsn~nss.md)

- Manufacturer Part Number: B2B\-PH\-K\-S\(LF\)\(SN\)
- Role Details: Unit 2 IN L: signal plus ground
- Manufacturer Name: JST Sales America
- Symbol Style: parametric\-v1
- Part Type: Connector
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1811151524\_JST\-Sales\-America\-B2B\-PH\-K\-S\-LF\-SN\_C131337\.pdf
- Role: Audio Connector
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- PIN1 [pin 1]
- PIN2 [pin 2]

### J8 — [B2B\-PH\-K\-S\(LF\)\(SN\)](https://flux.ai/jecstronic/b2b-ph-k-slfsn~nss.md)

- Manufacturer Part Number: B2B\-PH\-K\-S\(LF\)\(SN\)
- Role: Audio Connector
- Manufacturer Name: JST Sales America
- Symbol Style: parametric\-v1
- Part Type: Connector
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1811151524\_JST\-Sales\-America\-B2B\-PH\-K\-S\-LF\-SN\_C131337\.pdf
- Role Details: Unit 2 IN R: signal plus ground
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- PIN1 [pin 1]
- PIN2 [pin 2]

### J9 — [B2B\-PH\-K\-S\(LF\)\(SN\)](https://flux.ai/jecstronic/b2b-ph-k-slfsn~nss.md)

- Manufacturer Part Number: B2B\-PH\-K\-S\(LF\)\(SN\)
- Manufacturer Name: JST Sales America
- Role: Audio Connector
- Symbol Style: parametric\-v1
- Part Type: Connector
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1811151524\_JST\-Sales\-America\-B2B\-PH\-K\-S\-LF\-SN\_C131337\.pdf
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: Unit 2 OUT L: signal plus ground

**Pins:**
- PIN1 [pin 1]
- PIN2 [pin 2]

### U1 — [AP63205WU\-7](https://flux.ai/lcsc/ap63205wu-7~0b16.md)

- Operating Temperature: \-40℃\~\+85℃@\(TA\)
- Manufacturer Name: DIODES\(美台\)
- Max Output Voltage: 5V
- Datasheet URL: https://www\.diodes\.com/assets/Datasheets/AP63200\-AP63201\-AP63203\-AP63205\.pdf
- LCSC Part Number: C2071056
- Part Type: DC\-DC Converters
- JLCPCB Part Class: Extended Part
- Manufacturer Part Number: AP63205WU\-7
- Role Details: AP63205 fixed 5V, 2A; Hothouse load is 450mA at 5V, \~294mA from 9V at 85% efficiency
- Frequency: 1100kHz
- Output Current: 2A
- Package or Case Code: TSOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BL
- Role: Power Conversion
- Input Voltage: 3\.8 \~ 32V

**Pins:**
- BST [pin 6]
- EN [pin 2]
- FB [pin 1]
- GND [pin 4]
- SW [pin 5]
- VIN [pin 3]

*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://flux\.ai/funkyboss/hothouse\-desktop\-chain\-dsp\~xs](https://flux.ai/funkyboss/hothouse-desktop-chain-dsp~xs).*

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*Generated from [https://flux\.ai/funkyboss/hothouse\-desktop\-chain\-dsp\~xs](https://flux.ai/funkyboss/hothouse-desktop-chain-dsp~xs)*