2 layers100 × 61 mm
Wgr.kicad pcb.bck
a5632645/final_design
simple digital waveguide synthesizer & simple mpe midi keyboard(pitch bend and pressure)
66 parts4
2 layers100 × 61 mm
simple digital waveguide synthesizer & simple mpe midi keyboard(pitch bend and pressure)
- Size
- 100 × 61 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 103
- Nets
- 151
- Pads
- 466
- Tracks, vias
- 1,068, 154
- Pours
- 288
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 23 May 2025
- Updated
- 23 Oct 2025
Overview
Wgr is an open-source printed circuit board by a5632645, from the a5632645/final_design repository on GitHub. It is a 2-layer board of 100 × 61 mm with 103 parts on 151 nets, routed with 1,068 tracks and 154 vias.
It is built around the STM32H750VBT6, CH552G and SX1308, with the W25Q16JVSSIQ, MPR121QR2 and ME6210A33M3G among its other parts. Its parts include 41 capacitors, 21 resistors, 10 switches, 8 connectors and 6 ICs. It belongs with the audio and music boards and the STM32 and 8051 (CH55x, STC, AT89) boards of this library.
Main components
11
STM32H750VBT6
LQFP-100(14x14)-40℃~+85℃ 1.62V~3.6V 128KB 12bit 16bit 1MB 32 Bit 480MHz 82 ARM Cortex-M7 Built-in FLASH LQFP-100(14x14) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
CH552G
SOP-1616KB 24MHz 3.3V~5V 51 Family 8bit FLASH SOP-16 Microcontrollers (MCU/MPU/SOC) ROHSWCH (Nanjing Qinheng Microelectronics)Microcontrollers (MCU/MPU/SOC)
SX1308
SOT-23-6-40℃~+85℃ 1 1.2MHz 100uA 2A 2V~24V Adjustable Boost Boost Built-in No SOT-23-6 DC-DC Converters ROHSSXDC-DC Converters
W25Q16JVSSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 10uA 133MHz 16Mbit 2.7V~3.6V 20 Years 3ms SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
MPR121QR2
QFN-20(3x3)-40℃~+85℃ 1.71V~3.6V 12 29uA 2kV 3uA Capacitive Touch QFN-20(3x3) Touch Sensors ROHSNXP SemiconductorsTouch Sensors
ME6210A33M3G
SOT23-3-25℃~+85℃ 1 1.6uA 10mV@(10mA) 18V 3.3V 500mA Fixed Positive Short Circuit Protection SOT23-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMICRONEVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
PCM5102APW
TSSOP-20-25℃~+85℃ 1.8V~3.3V 2 32 384kHz 500uA 50MHz Audio Decoder Digital filtering、Power-down mode I2S TSSOP-20 ADCs/DACs - Special Purpose ROHSTexas InstrumentsADCs/DACs - Special PurposeTXS0108EPW
TSSOP-20-40℃~+85℃ 1 1.4V~3.6V 1.65V~5.5V 60Mbps 8 Automatic direction detection、Output enable high-impedance、Integrated pull-up resistor Bidirectional Level translator Push-Pull、Open-drain TSSOP-20 Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
SI2302CDS
SOT-231 N-channel 2.9A 20V 3.5nC@10V,4.5V 550mW 75mΩ@2.5V 850mV N-Channel SOT-23 MOSFETs ROHSVishay IntertechnologyMOSFETs
SMD3225-400N
1210-40℃~+85℃ 0.5pF 1kA 2 2.5mm 2.5mm 3.2mm 400V 900V ±30% 1210 Gas Discharge Tube Arresters (GDT) ROHShongjiachengGas Discharge Tube Arresters (GDT)
SS34
SMA(DO-214AC)-55℃~+125℃ 3A 40V 500uA@40V 550mV@3A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
README
README.mdfinal_design/毕业设计
This is my final design.
这是我的本科毕业设计.
[!WARNING] don't try to rebuild hardware, it has too many incorrect design, that will just waste your time and money.
请不要试着复刻硬件，有很多设计不合理的地方，复刻只会浪费你的时间和钱
digital waveguide synthesizer/数字波导合成器
This is a MPE capability digital waveguide synthesizer.It has plucked, woodwind and bowed engine.Or you can use it as a MPE midi keyboard(only one octave).
这是一个mpe兼容的数字波导合成器，有拨弦，木管和弓弦模型，也可以当成mpe键盘使用，尽管只有一个八度。
demo/演示
https://www.bilibili.com/video/BV1ghJGzJEi4/
bug
硬件中含有较多问题
the hardware has many bugs.
Parts
103| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 100nF | PCM_Capacitor_SMD_AKL:C_0603_1608Metric | C21, C22, C23, C24, C25, C26, C27, C28, C29, C30, C32, C35, C39 |
| 7 | 100N | PCM_Capacitor_SMD_AKL:C_0805_2012Metric | C1, C4, C5, C14, C15, C16, C17 |
| 7 | 4.7K | PCM_Resistor_SMD_AKL:R_0805_2012Metric | R18, R19, R20, R21, R26, R28, R29 |
| 6 | 1U | PCM_Capacitor_SMD_AKL:C_0805_2012Metric | C8, C9, C10, C11, C12, C13 |
| 5 | 470 | PCM_Resistor_SMD_AKL:R_0805_2012Metric | R1, R2, R3, R11, R12 |
| 4 | MountingHole_M3 | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 2.2U | PCM_Capacitor_SMD_AKL:C_0805_2012Metric | C2, C3, C18 |
| 2 | 100N | PCM_Capacitor_SMD_AKL:C_0603_1608Metric | C40, C41 |
| 2 | 10uF | PCM_Capacitor_SMD_AKL:C_0805_2012Metric | C36, C37 |
| 2 | 2.2N | PCM_Capacitor_SMD_AKL:C_0805_2012Metric | C6, C7 |
| 2 | 22U | PCM_Capacitor_SMD_AKL:C_1206_3216Metric | C19, C20 |
| 2 | 22pF | PCM_Capacitor_SMD_AKL:C_0603_1608Metric | C33, C34 |
| 2 | 4.7k | PCM_Resistor_SMD_AKL:R_0805_2012Metric | R23, R27 |
| 2 | 5.1k | PCM_Resistor_SMD_AKL:R_0603_1608Metric_Pad0.98x0.95mm | R24, R25 |
| 2 | Conn_01x05 | Connector_Harwin:Harwin_M20-89005xx_1x05_P2.54mm_Horizontal | J2, J3 |
| 2 | SW_Push | 1MyLibrary:SW-SMD_4P-L4.5-W4.5-P3.00-LS7.0_TS-1009S-03826 | SW7, SW8 |
| 2 | Si2302CDS | PCM_Package_TO_SOT_SMD_AKL:SOT-23 | Q1, Q2 |
| 1 | 1 | 1MyLibrary:KEY-SMD_2P-L6.0-W6.0-P6.00 | SW1 |
| 1 | 10K | PCM_Resistor_SMD_AKL:R_Array_Convex_4x0603 | RN2 |
| 1 | 10k | PCM_Resistor_SMD_AKL:R_0603_1608Metric_Pad0.98x0.95mm | R22 |
| 1 | 10k | PCM_Resistor_SMD_AKL:R_0603_1608Metric | R16 |
| 1 | 10uF | PCM_Capacitor_SMD_AKL:C_0603_1608Metric | C31 |
| 1 | 1K | PCM_Resistor_SMD_AKL:R_0805_2012Metric | R15 |
| 1 | 1uF | PCM_Capacitor_SMD_AKL:C_0805_2012Metric | C38 |
| 1 | 2 | 1MyLibrary:KEY-SMD_2P-L6.0-W6.0-P6.00 | SW2 |
| 1 | 2.7寸240*96 0.5MM*32P UC1638 三串背光 背面插座 | Connector_FFC-FPC:Hirose_FH12-32S-0.5SH_1x32-1MP_P0.50mm_Horizontal | LCD1 |
| 1 | 22K | PCM_Resistor_SMD_AKL:R_0603_1608Metric | R13 |
| 1 | 3 | 1MyLibrary:KEY-SMD_2P-L6.0-W6.0-P6.00 | SW3 |
| 1 | 4 | 1MyLibrary:KEY-SMD_2P-L6.0-W6.0-P6.00 | SW4 |
| 1 | 470 | PCM_Resistor_SMD_AKL:R_Array_Convex_4x0603 | RN1 |
| 1 | 5 | 1MyLibrary:KEY-SMD_2P-L6.0-W6.0-P6.00 | SW5 |
| 1 | 500mA | PCM_Fuse_Handsoldering_AKL:Fuse_0603_1608Metric | F1 |
| 1 | 560K | PCM_Resistor_SMD_AKL:R_0603_1608Metric | R14 |
| 1 | 6 | 1MyLibrary:KEY-SMD_2P-L6.0-W6.0-P6.00 | SW6 |
| 1 | 6.8U | Inductor_SMD:L_APV_APH0420 | L1 |
| 1 | 600R | PCM_Inductor_SMD_AKL:L_0603_1608Metric | L2 |
| 1 | CH552G | footprint:SM07B-SRSS-TB | J4 |
| 1 | CH552G-2 | footprint:SM07B-SRSS-TB | J5 |
| 1 | Debug | PCM_LED_SMD_AKL:LED_0805_2012Metric | LED2 |
| 1 | ME6210A33M3G | PCM_Package_TO_SOT_SMD_AKL:SOT-23 | U3 |
| 1 | MPR121 | footprint:SM04BSRSSTB | J7 |
| 1 | MPR121-2 | footprint:SM04BSRSSTB | J8 |
| 1 | PARAM | 1MyLibrary:SW-TH_EC11XXXXXXXX | SW9 |
| 1 | PCM5102A | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
| 1 | Power | PCM_LED_SMD_AKL:LED_0805_2012Metric | LED1 |
| 1 | SMD3225-4 | PCM_Crystal_AKL:Crystal_SMD_3225-4Pin_3.2x2.5mm | X1 |
| 1 | SS34 | PCM_Diode_SMD_AKL:D_SMA | D1 |
| 1 | STM32H750VBT6 | footprint:QFP50P1600X1600X160-100N | IC1 |
| 1 | SX1308 | 1MyLibrary:SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL | U2 |
| 1 | TXS0108EPW | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U4 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J1 |
| 1 | VALUE | 1MyLibrary:SW-TH_EC11XXXXXXXX | SW10 |
| 1 | W25Q16JVSS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U5 |
| 1 | octButton | footprint:SM04BSRSSTB | J9 |
| 1 | ~ | 1MyLibrary:AUDIO-IN-SMD_PJ-327A_C22355751 | PJ1 |
More from a5632645/final_design
5- 2 layers43.6 × 60.6 mm
Transform
a5632645/final_design
simple digital waveguide synthesizer & simple mpe midi keyboard(pitch bend and pressure)
37 parts4 - 2 layers50 × 75 mm
Modwheel
a5632645/final_design
simple digital waveguide synthesizer & simple mpe midi keyboard(pitch bend and pressure)
20 parts4 - 2 layers22 × 100 mm
Keyboard
a5632645/final_design
simple digital waveguide synthesizer & simple mpe midi keyboard(pitch bend and pressure)
19 parts4 - 2 layers57 × 57 mm
Xypad
a5632645/final_design
simple digital waveguide synthesizer & simple mpe midi keyboard(pitch bend and pressure)
10 parts4
Similar boards
- 4 layers42.8 × 36.8 mm
- 4 layers36 × 54.5 mm
V0.2 Custom Motor Driver DRV8316 STM32G4
clawntl/BLDC-Driver
BLDC Driver with STM32G431 and DRV8316
86 parts9AGPL-3.0 - 2 layers73 × 77.5 mm
Uca dkaiot2-kicad
LEAT-EDGE/ambient-pcb-dkaiot
The design also provides empty footprints for several other sensors which are not populated in the Ambient variant: - Light sensor (LITEON LTR-303ALS-01) - MEMS microphone (Knowles SPH0645LM4H) - Indoor air quality…
184 partsCERN-OHL-P-2.0 - 6 layers70 × 70 mm
FoC Motor Controller
WeymenKoo/Motor-Controller
Technical notes from a full design cycle: idea → theory → schematic → simulation → layout → fab → bring-up plan.
212 parts - 2 layers232 × 134 mm
- 2 layers100 × 100 mm
- 4 layers41 × 90.2 mm
- 4 layers230 × 196.7 mm
Steel form Dish washer
R-Mutura/DISHWASHER
Contains hardware and Software implementation of a dishwasher product
156 parts
Questions
How big is the Wgr PCB?
It measures 100 × 61 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Wgr use?
103 parts, built around the STM32H750VBT6, CH552G, SX1308 and W25Q16JVSSIQ. 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 Wgr KiCad files?
From the a5632645/final_design repository on GitHub, at the commit this page was made from: the board is mainpcb/wgr.kicad_pcb and its schematic keyboard/keyboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Wgr design in my own project?
Its repository states no licence, so its author keeps all rights: ask a5632645 before reusing the design.