4 layers54 × 106 mm
DaisySeedPedal1590b SMD
bkshepherd/DaisySeedProjects
A collection of hardware and software projects based around the Electro-Smith Daisy Seed
69 parts559MIT
4 layers60 × 94 mm
DaisySeedPedal125b
alxp1982/DaisySeedProjectsA collection of hardware and software projects based around the Electro-Smith Daisy Seed
- Size
- 60 × 94 mm
- Copper layers
- 4
- Thickness
- 1.63 mm
- Parts
- 79
- Nets
- 78
- Pads
- 289
- Tracks, vias
- 436, 57
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 22 Nov 2024
- Updated
- 14 Apr 2025
Overview
DaisySeedPedal125b is an open-source printed circuit board by alxp1982, from the alxp1982/DaisySeedProjects repository on GitHub, published under the MIT licence. It is a 4-layer board of 60 × 94 mm with 79 parts on 78 nets, routed with 436 tracks and 57 vias.
It is built around the PDS1-S5-S5-M, MCP6004-E/P and OPA1652AID, with the CPC1018N, H11L1 and SS8050 among its other parts. Its parts include 27 resistors, 19 capacitors, 8 ICs, 6 diodes and 5 connectors.
Main components
6
PDS1-S5-S5-M
-- Power Module/Power Supply ROHSCUIPower Supply Module,Power Supplies
MCP6004-E/P
PDIP-14-40℃~+125℃ 1.8V~6V 100uA 1MHz 1pA 1pA 23mA 28nV/√Hz@1kHz 2uV/℃ 4 4.5mV 600V/ms 76dB ESD protection Rail-to-Rail Input, Rail-to-Rail Output PDIP-14 Operational Amplifier ROHSMicrochip TechnologyOperational Amplifier
OPA1652AID
SOIC-8-18V~-2.25V、2.25V~18V -40℃~+85℃ 0.00005% 2-Channel 2mA SOIC-8 Audio Amplifiers ROHSTexas InstrumentsAudio Amplifiers
CPC1018N
SOP-4-2.54mm-40℃~+85℃ 0.2mA 1.2V 1.5kV 220us 400mW 470us 580mΩ 600mA 60V One set normally open: 2A (SPST - normally open) SOP-4-2.54mm Solid State Relays (MOS Output) ROHSLittelfuse/IXYSSolid State Relays (MOS Output)
H11L1
DIP-6-55℃~+100℃ 1 1.6mA 1Mbit/s 250mW 3V~15V 5kV DC DIP-6 Logic Output Optoisolators ROHSEverlight ElectronicsLogic Output Optoisolators
SS8050
SOT-323-55℃~+150℃ 1 NPN 1.5A 100MHz 100nA 200 25V 300mW 500mV 5V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
README
README.mdDaisy Seed Projects
This is a demo of a pedal board I put together using 3 of my custom Daisy Seed based guitar pedals. I designed and built the hardware and programmed the software. Everything shown here is open source and all the code, pcb files, and basic instructions on how to build the pedals, can be found on these pages.
Software Projects:
1. Guitar Multi-Effect Pedal
The software that can run on any of the custom Guitar Pedal hardware projects listed below as well at the PedalPCB Terrarium hardware. This software is a flexible platform that abstracts the underlying Guitar Pedal hardware and allows a collection of Effects Modules to run on any of those hardware platforms.
Hardware Projects:
I provide everything you need to build any of pedals you see below along with pretty detailed documentation. However, recently I started to get a lot of requests to buy kits or finished pedals based on my designs. This is not something I typically do, but sometimes I do have extra PCBs, parts, and enclosures lying around and I'm willing to pass them along to you, basically at cost. I've included some ordering details along with each design below.
1. Guitar Effect Pedal in 125b Enclosure (SMD Parts)
A feature rich and flexible platform for making DSP based guitar FX pedals. Stereo Audio, Midi in/out, OLED Display, Rotary Encoder for Menu Navigation, 6 Knobs, 2 LEDs, 2 Foot Switches, Relay based "True Bypass" switching, all based on the Daisy Seed microcontroller.
2. Guitar Effect Pedal in 1590b Enclosure (SMD Parts)
A robust and tiny platform for making DSP based guitar FX pedals. Stereo Audio, Midi in/out, 4 Knobs, 2 LEDs, 1 or 2 Foot Switches, Relay based "True Bypass" switching, all based on the Daisy Seed microcontroller. Using SMD parts for easy manufacturing by a fab such as JLCPCB.
3. Guitar Effect Pedal in 1590b Enclosure (Through-hole parts)
Same form factor and features as the SMD version of the 1590b pedal, minus the Relay based "True Bypass" switching. Using all Through-Hole parts for easy assembly at home with limited soldering skills.
More Information about the Daisy Seed can be found at:
Parts
79| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 2M | Resistor_SMD:R_0805_2012Metric | R1, R2, R4, R5, R7, R8, R9, R10, R13, R14 |
| 9 | 10UF | Capacitor_SMD:C_0805_2012Metric | C1, C4, C5, C9, C10, C11, C12, C15, C16 |
| 7 | 100NF | Capacitor_SMD:C_0805_2012Metric | C2, C3, C7, C8, C13, C14, C17 |
| 6 | 10K | GuitarPedal125B:Potentiometer_Bourns_PRS11R | POT1, POT2, POT3, POT4, POT5, POT6 |
| 5 | 1K | Resistor_SMD:R_0805_2012Metric | R19, R20, R21, R24, R25 |
| 4 | 10K | Resistor_SMD:R_0805_2012Metric | R22, R23, R26, R27 |
| 2 | 100K | Resistor_SMD:R_0805_2012Metric | R3, R6 |
| 2 | 100R | Resistor_SMD:R_0805_2012Metric | R11, R12 |
| 2 | 10NF | Capacitor_SMD:C_0805_2012Metric | C18, C19 |
| 2 | 1N4007 | Diode_SMD:D_SOD-123F | D3, D4 |
| 2 | CPC1018N | Package_SO:SOP-4_3.8x4.1mm_P2.54mm | U7, U8 |
| 2 | G6K-2 | Relay_SMD:Relay_DPDT_Omron_G6K-2G-Y | K1, K2 |
| 1 | 10R | Resistor_SMD:R_0805_2012Metric | R17 |
| 1 | 1N4148 | Diode_SMD:D_SOD-123 | D2 |
| 1 | 1N5817 | Diode_SMD:D_SOD-123 | D1 |
| 1 | 2.2uH | Inductor_SMD:L_0805_2012Metric | L1 |
| 1 | 220R | Resistor_SMD:R_0805_2012Metric | R15 |
| 1 | 22UF | Capacitor_SMD:C_0805_2012Metric | C6 |
| 1 | 33R | Resistor_SMD:R_0805_2012Metric | R16 |
| 1 | 470R | Resistor_SMD:R_0805_2012Metric | R18 |
| 1 | AUDIO_IN_TRS | NMJ6HCD2:NEUTRIK_NMJ6HCD2 | J2 |
| 1 | AUDIO_OUT_TRS | NMJ6HCD2:NEUTRIK_NMJ6HCD2 | J3 |
| 1 | Barrel_Jack_Switch | GuitarPedal125B:Generic_PowerJack | J1 |
| 1 | Electrosmith_Daisy_Seed_Rev4 | Module:Electrosmith_Daisy_Seed | A1 |
| 1 | Foot_Switch_1 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | FS1 |
| 1 | Foot_Switch_2 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | FS2 |
| 1 | H11L1 | GuitarPedal125B:SOP-6_2.54mm | U5 |
| 1 | LD1117S50TR_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | LED_1 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | LED1 |
| 1 | LED_2 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | LED2 |
| 1 | MCP6004 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U3 |
| 1 | MIDI IN JACK | AudioConnector-PJ320A:TRRS-PJ-320A | J4 |
| 1 | MIDI OUT JACK | AudioConnector-PJ320A:TRRS-PJ-320A | J5 |
| 1 | OLED_DISPLAY_SSD1306_SPI | GuitarPedal125B:HiLetgo_OLED_SPI | U6 |
| 1 | OPA1652AID | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | PDS1-S5-S5-M | PDS1-S5-S5-M:CONV_PDS1-S5-S5-M | U2 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | ENC1 |
| 1 | SS8050 | Package_TO_SOT_SMD:SOT-23-3 | Q1 |
Questions
How big is the DaisySeedPedal125b PCB?
It measures 60 × 94 mm and has 4 copper layers, 1.63 mm thick.
What parts does the DaisySeedPedal125b use?
79 parts, built around the PDS1-S5-S5-M, MCP6004-E/P, OPA1652AID and CPC1018N. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the DaisySeedPedal125b KiCad files?
From the alxp1982/DaisySeedProjects repository on GitHub, at the commit this page was made from: the board is Hardware/GuitarPedal125b/pcb/DaisySeedPedal125b.kicad_pcb and its schematic Hardware/GuitarPedal125b/pcb/Audio_Input_Buffer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the DaisySeedPedal125b design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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