4 layers178 × 83.3 mm
2 layers81.2 × 87.2 mm
This repository contains the schematics and PCB layouts created with KiCad 8.0 for a versatile digital effects platform that utilizes the Daisy-Seed board from ElectroSmith.
- Size
- 81.2 × 87.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 44
- Nets
- 58
- Pads
- 186
- Tracks, vias
- 457, 24
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 18 Oct 2024
- Updated
- 30 May 2025
Overview
PENDA is an open-source printed circuit board by DADDesign-Projects, from the DADDesign-Projects/PENDA-Hardware repository on GitHub. It is a 2-layer board of 81.2 × 87.2 mm with 44 parts on 58 nets, routed with 457 tracks and 24 vias.
It is built around the OPA2134UA and H11L1. Its parts include 14 resistors, 9 capacitors, 7 connectors, 4 switches and 3 ICs. It belongs with the audio and music boards of this library.
Main components
2
OPA2134UA
SOIC-8-18V~-2.5V、2.5V~18V -40℃~+85℃ 100dB 2 20V/us 2uV/℃ 35mA 500uV 50pA 5mA 5pA 8MHz 8nV/√Hz@1kHz Built-in compensation SOIC-8 Operational Amplifier ROHSTexas InstrumentsAudio Amplifiers
H11L1
DIP-6-55℃~+100℃ 1 1.6mA 1Mbit/s 250mW 3V~15V 5kV DC DIP-6 Logic Output Optoisolators ROHSEverlight ElectronicsLogic Output Optoisolators
README
README.mdPENDA: Platform for Effects oN DAisy
Welcome to the PENDA project! This repository contains the schematics and PCB layouts created with KiCad 8.0 for a versatile digital effects platform that utilizes the Daisy-Seed board from ElectroSmith.
Author
DAD Design
Overview / Features
PENDA is designed to provide a range of audio effects through a user-friendly interface. The platform includes:
- Mono Input and Output: Simplified connectivity for easy integration into your audio setup.
- Momentary Footswitches: Two footswitches for hands-free operation of effects.
- 2-inch SPI Display: Featuring the ST7789 from Waveshare, providing a clear and compact user interface (other display options are available).
- MIDI Input: Allows for easy integration with MIDI controllers and other devices.
- Control Options:
- 4 Encoders with Pushbutton: For easy parameter adjustment and selection.
- 3 Analog Potentiometers: To control input levels and the Dry/Wet mix.
- Fully Analog Dry Circuit: Ensures a high-quality dry signal path, maintaining the integrity of your original sound.
Content
The Fab directory contains all the necessary files for fabrication. The PENDA directory contains the source files for KiCad 8.0.
Software
PENDA Software is a collection of audio effects built on an advanced framework, specifically designed for the PENDA Hardware platform. GitHub Link
Contributing
We welcome contributions to the PENDA project! If you have suggestions or improvements, please open an issue or submit a pull request.
License
This project is licensed under the MIT License.
Parts
44| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 4.7k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R4, R7, R8 |
| 3 | 100n | Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm | C1, C3, C5 |
| 3 | 100u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C2, C4, C6 |
| 3 | 150K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R11, R12, R13 |
| 2 | 10K | @Perso:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical_Center | RV2, RV3 |
| 2 | 220k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10, R14 |
| 1 | 0 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R15 |
| 1 | 100 1W | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 1N5818 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | 1N914 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D2 |
| 1 | 1u | Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm | C9 |
| 1 | 2.2k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 1 | 220 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 1 | 220n | Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm | C7 |
| 1 | 22k | @Perso:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical_Center | RV1 |
| 1 | 470 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 470n | Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm | C8 |
| 1 | 47K | Resistor_THT:R_Array_SIP7 | RN1 |
| 1 | Alim 9v | @Perso:PinHeader_1x02_P5.08mm_Vertical | J1 |
| 1 | Carte SD | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J5 |
| 1 | Electrosmith_Daisy_Seed | Module:Electrosmith_Daisy_Seed | A1 |
| 1 | H11L1 | Package_DIP:DIP-6_W7.62mm | U2 |
| 1 | In | @Perso:PinHeader_1x02_P5.08mm_Vertical | J3 |
| 1 | Jack MIDI | @Perso:PinHeader_1x02_P5.08mm_Vertical | J2 |
| 1 | Main | @Perso:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm_Center | SW4 |
| 1 | OPA2134 | Package_DIP:DIP-8_W7.62mm | U1 |
| 1 | Out | @Perso:PinHeader_1x02_P5.08mm_Vertical | J4 |
| 1 | Param 1 | @Perso:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm_Center | SW1 |
| 1 | Param 2 | @Perso:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm_Center | SW2 |
| 1 | Param 3 | @Perso:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm_Center | SW3 |
| 1 | Switch 1 | @Perso:PinHeader_1x02_P5.08mm_Vertical | J6 |
| 1 | Switch 2 | @Perso:PinHeader_1x02_P5.08mm_Vertical | J7 |
| 1 | ~ | @Perso:Waveshare 2 p LCD V2 | U3 |
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Questions
How big is the PENDA PCB?
It measures 81.2 × 87.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PENDA use?
44 parts, built around the OPA2134UA and H11L1. 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 PENDA KiCad files?
From the DADDesign-Projects/PENDA-Hardware repository on GitHub, at the commit this page was made from: the board is PENDA/PENDA.kicad_pcb and its schematic PENDA/PENDA.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PENDA design in my own project?
Its repository states no licence, so its author keeps all rights: ask DADDesign-Projects before reusing the design.