2 layers39.7 × 50 mm
Sd wav pcm5100
gnilsson2/YAPP_Box_KiCad_Generator
Generate Openscad boxes from KiCad PCB files.
329 partsMIT
2 layers406 × 90 mm
TecladoMidi
ImMagni/SynthetizerSynthesizer made of pcm5000 lm4810 pam8403
- Size
- 406 × 90 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 113
- Nets
- 105
- Pads
- 473
- Tracks, vias
- 774, 88
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 12 Dec 2025
- Updated
- 31 Dec 2025
Overview
TecladoMidi is an open-source printed circuit board by ImMagni, from the ImMagni/Synthetizer repository on GitHub, published under the MIT licence. It is a 2-layer board of 406 × 90 mm with 113 parts on 105 nets, routed with 774 tracks and 88 vias.
It is built around the LM4810MM, PAM8403 and PCM5100PW. Its parts include 41 diodes, 41 switches, 13 capacitors, 6 connectors and 3 ICs. It belongs with the audio and music boards of this library.
Main components
3
LM4810MM
VSSOP-8-40℃~+85℃ 0.1% 1.3mA 105mWx2@16Ω 2-Channel 2V~5.5V 70dB Automatic mute/no-noise switch、Enable/shutdown function Class AB VSSOP-8 Audio Amplifiers ROHSTexas InstrumentsAudio Amplifiers
PAM8403
SOP-16-40℃~+85℃ 2-Channel 2.2V~5.5V 3Wx2@4Ω 6.3mA 90% Automatic mute/no-noise switch、Enable/shutdown function、Filterless architecture Class D SOP-16 Audio Amplifiers ROHSSlkorAudio Amplifiers
PCM5100PW
TSSOP-20-25℃~+85℃ 2 3.3V~3.6V Digital filtering、Power-down mode I2S TSSOP-20 ADCs/DACs - Special Purpose ROHSTexas InstrumentsADCs/DACs - Special Purpose
README
README.mdSynthesizer
A Synthesizer piano with three octaves that uses an Orpheus Pico, PCM5100 DAC, LM4810, and PAM8403 amplifiers.
<img src=images/3dviewpcb.png/>
This project is a digital synthesizer keyboard capable of generating audio internally or outputting MIDI over USB. It features a screen-based user interface controlled through a rotary encoder and directional buttons.
Features
- Volume control from the screen using a rotary encoder
- Selectable output modes: MIDI, Speakers, or Line output
- Three-octave keyboard
- Multiple waveform generation modes for audio
- Settings saves on memory
- On-screen menu system with directional navigation
- LCD feedback for current settings
BOM
- 1× Orpheus_Pico (Raspberry Pi Pico)
- 5× Capacitor 1 µF
- 4× Capacitor 4.7 µF
- 1× Capacitor 0.1 µF
- 1× Capacitor 0.1 µF
- 2× Capacitor 10 µF
- 41× Diode 1N4148
- 1× screen ST7735R LCD
- 1× Jack audio 3.5 mm
- 2× Resistencia 10 kΩ
- 40× Cherry Switchs
- 1× Rotary Encoder with switch
- 1× PCM5100 DAC
- 1× LM4810
- 1x PAM8403
- 5x M3 Heatsets
- 5x M3x16 screws
| Case | Schematic | Pcb |
|---|---|---|
| <img src=images/case.png/> | <img src=images/schematic.png/> | <img src=images/pcb.png/> |
| - | - |
|---|---|
| <img src=images/all.png/> | <img src=images/3dviewpcb.png/> |
Parts
113| Qty | Value | Footprint | References |
|---|---|---|---|
| 41 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +25 |
| 40 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +24 |
| 5 | 1u | Capacitor_THT:C_Radial_D5.0mm_H5.0mm_P2.00mm | C1, C2, C3, C4, C13 |
| 5 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4, H5 |
| 4 | 4.7u | Capacitor_THT:C_Radial_D5.0mm_H5.0mm_P2.00mm | C5, C6, C8, C11 |
| 2 | + | Connector_Wire:SolderWirePad_1x01_SMD_5x10mm | J3, J4 |
| 2 | - | Connector_Wire:SolderWirePad_1x01_SMD_5x10mm | J8, J9 |
| 2 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2 |
| 2 | 10u | Capacitor_THT:C_Radial_D5.0mm_H5.0mm_P2.00mm | C10, C12 |
| 1 | 0.1u | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C9 |
| 1 | 0.1u | Capacitor_THT:C_Radial_D5.0mm_H5.0mm_P2.00mm | C7 |
| 1 | AudioJack4_SwitchT1 | Connector_Audio:Jack_3.5mm_PJ31060-I_Horizontal | J2 |
| 1 | LM4810 | Package_SO:TSSOP-8_3x3mm_P0.65mm | U2 |
| 1 | LOGO | images:Flag | G*** |
| 1 | Orpheus_Pico | Module:RaspberryPi_Pico_Common_Unspecified | A1 |
| 1 | PAM8403 | PAM8403:SOP-16 | U4 |
| 1 | PCM5100 | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
| 1 | RotaryEncoder_Switch_MP | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm_MountingHoles | SW37 |
| 1 | ST7735R LCD | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J1 |
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Questions
How big is the TecladoMidi PCB?
It measures 406 × 90 mm and has 2 copper layers, 1.6 mm thick.
What parts does the TecladoMidi use?
113 parts, built around the LM4810MM, PAM8403 and PCM5100PW. 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 TecladoMidi KiCad files?
From the ImMagni/Synthetizer repository on GitHub, at the commit this page was made from: the board is PCB/TecladoMidi.kicad_pcb and its schematic PCB/TecladoMidi.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the TecladoMidi 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).