Wagyu
About the Wagyu PCB
Wagyu is an open source STM32 PCB design by mmalex, published on GitHub under the CC0-1.0 license. It is a 4-layer board measuring 25.4 × 106.7 mm, with 95 components from 29 distinct parts.
Its main chip is the STM32F405RGTX, from the STM32 family. Other key parts include the MCP6004, LM1117-3.3, TL072, WM8758B and LM4040DBZ-5. By type, the board carries 37 capacitors, 37 resistors, 8 connectors, 7 ICs, 1 crystal and 1 jumper.
It belongs with the audio and displays & leds designs in this gallery.
From the project
hardware & software for a simple eurorack module to support some youtube livestreams
WATCH THIS - https://www.youtube.com/watch?v=Wm21Wc7AefM
a small eurorack module with 3 knobs, 4 DC coupled CV inputs (+-5v), an encoder, an 8x8 LED matrix display, stereo AC coupled outputs (+-8v), and stereo AC coupled audio rate inputs. the audio inputs are 'aliased' with two of the CV inputs, so that you can use one or both of them as either CV or audio inputs. for example, the 3 leftmost jacks can be used as CV inputs, then the 3 rightmost jacks are the 'audio' side, with mono in at the top and stereo out at the bottom. alternatively, the top two jacks can be used as stereo inputs.
Main components on the Wagyu
Wagyu bill of materials (BOM)
95 components, 29 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MCP6004 | TSSOP-14_4.4x5mm_P0.65mm | U1 |
| 2 | LM1117-3.3 | SOT-223-3_TabPin2 | U2, U3 |
| 1 | STM32F405RGTX STM32F405RGTx | LQFP-64_10x10mm_P0.5mm | U4 |
| 1 | TL072 | SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | WM8758B | QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U6 |
| 1 | LM4040DBZ-5 | SOT-23 | U7 |
| 1 | CRYSTAL_GND24 Crystal_GND24 | Crystal_SMD_Abracon_ABM8G-4Pin_3.2x2.5mm | Y1 |
| 6 | AudioJack2_SwitchT | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles | J1, J2, J3, J4, J6, J7 |
| 1 | SWD header | PinHeader_2x07_P1.27mm_Vertical_SMD | J5 |
| 1 | Conn_02x08_Top_Bottom | led8x8 | J8 |
| 1 | Euro power | PinHeader_2x08_P2.54mm_Vertical | JP1 |
| 3 | 100k | Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV1, RV2, RV3 |
| 1 | Rotary_Encoder_Switch | RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW2 |
| 10 | 100N 100n | C_0603_1608Metric | C1, C11, C18, C19, C22, C23, C25, C26 +2 |
| 7 | 10U 10u | C_0805_2012Metric | C2, C3, C4, C9, C10, C35, C36 |
| 6 | 220P 220p | C_0603_1608Metric | C5, C6, C7, C8, C20, C21 |
| 2 | 18P 18p | C_0603_1608Metric | C12, C14 |
| 3 | 2U2 2u2 | C_0603_1608Metric | C13, C15, C24 |
| 2 | 10UF CP | CP_Elec_5x4.5 | C16, C17 |
| 5 | 4.7U 4.7u | C_0603_1608Metric | C27, C29, C31, C32, C33 |
Show 9 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 220PF 220pf | C_0603_1608Metric | C30, C34 |
| 7 | 100K 100k | R_0603_1608Metric | R1, R2, R3, R6, R7, R8, R36 |
| 3 | 120K 120k | R_0603_1608Metric | R4, R5, R37 |
| 8 | 33K 33k | R_0603_1608Metric | R9, R10, R11, R12, R14, R15, R18, R19 |
| 1 | 10K 10k | R_0603_1608Metric | R13 |
| 6 | 5.6K 5.6k | R_0603_1608Metric | R16, R17, R22, R23, R24, R25 |
| 2 | 1k | R_0603_1608Metric | R20, R21 |
| 9 | 100 | R_0603_1608Metric | R26, R27, R28, R29, R30, R31, R32, R33 +1 |
| 1 | 3K3 3k3 | R_0603_1608Metric | R35 |
Wagyu design files
The KiCad project lives in the mmalex/wagyu repository on GitHub; these links point at the commit this page was built from.
Wagyu: common questions
What microcontroller does the Wagyu use?
The Wagyu is built around the STM32F405RGTX, from the STM32 family.
How big is the Wagyu PCB?
The Wagyu measures 25.4 × 106.7 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Wagyu?
95 components, from 29 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Wagyu design files?
From the mmalex/wagyu repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Wagyu design in my own project?
Yes, under the terms of its CC0-1.0 license, which mmalex chose for the repository.
Can I test firmware for the Wagyu without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
Similar boards
STM32LumenPnP Motherboard
opulo-inc
149 × 95 mm296 parts4LCC-BY-SA-4.03.7k
STM32AxxSolder
AxxAxx
39 × 82.5 mm122 parts2LGPL-3.01.7k
STM32AIOC
skuep
21 × 31.5 mm47 parts2LMIT1.4k
STM32Ferris
pierrechevalier83
208.8 × 86.8 mm102 parts2LSHL-2.11.3k
STM32176 pin board
rusefi
61.8 × 73.2 mm76 parts2LGPL-3.01.2k
STM32Brain board STM32F407
61.8 × 73.2 mm69 parts2LGPL-3.01.2k