OwmBoard
About the OwmBoard PCB
OwmBoard is an open source STM32 PCB design by kanengomibako, published on GitHub under the Unlicense license. It is a 2-layer board measuring 55.4 × 66 mm, with 158 components from 82 distinct parts.
Its main chip is the STM32F405RGT6, from the STM32 family. Other key parts include the OPA1678, V4220M, 78L05, 7805 and 7833. By type, the board carries 54 connectors, 45 resistors, 44 capacitors, 10 ICs, 2 crystals and 2 diodes.
From the project
Owm Pedalに用いているDSPボードです。 製作記事→https://kanengomibako.github.io/pages/00237.html
Owm Pedalに用いているDSPボードです。 製作記事→https://kanengomibako.github.io/pages/00237.html
＜更新履歴＞ Rev.C 2019年6月 ・入力に抵抗を追加 ・V4220Mをリセットできるようマイコンと接続 ・U7(7805)、U9(7833)の放熱部をスルーホールへ変更 ・U5をSTM32F722とSTM32F730に対応可能なよう周辺回路を変更 ※STM32F7での追加結線等は最下部参照
＜パーツリスト（Rev.C）＞ 20p 4 [1608] C15, C16, C17, C18 水晶振動子により容量が変わる 220p 4 [1608] C7, C8, C12, C13 1n 4 [1608] C5, C6, C10, C11 10n 2 [1608] C2, C4 100n 16 [1608] C22, C23, C24, C25, C30, C31, C32, C33, C34, C35, C36, C37, C38, C39, C40, C42 100n 2 [3225] C1,C3 PMLCAP 2u2 2 [2012] C19, C20 10u 5 [3216] C26, C27, C28, C29, C43 10u 2 C9, C14 SMD電解コンデンサ（直径5mm） 100u 2 C21…
Main components on the OwmBoard
OwmBoard bill of materials (BOM)
158 components, 82 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | OPA1678 | SOIC-8_3.9x4.9mm_P1.27mm | U1, U2, U3 |
| 1 | V4220M | my_SSOP-28_5.3x10.2mm_Pitch0.65mm | U4 |
| 1 | STM32F405RGT6 | my_LQFP-64_10x10_P0.5 | U5 |
| 2 | 78L05 | SOT-89-3 | U6, U8 |
| 1 | 7805 | my_TO-252-3 | U7 |
| 1 | 7833 | my_TO-252-3 | U9 |
| 1 | 78L33 | SOT-89-3 | U10 |
| 1 | 12.288MHz | Crystal_SMD_HC49-SD | Y1 |
| 1 | 8MHz | Crystal_SMD_HC49-SD | Y2 |
| 1 | LIN | my_SmallPad_0-8mmDrill | J1 |
| 1 | RIN | my_SmallPad_0-8mmDrill | J2 |
| 1 | LOUT | my_SmallPad_0-8mmDrill | J3 |
| 1 | ROUT | my_SmallPad_0-8mmDrill | J4 |
| 1 | C9(SDA) | my_SmallPad_0-8mmDrill | J5 |
| 1 | D2 | my_SmallPad_0-8mmDrill | J6 |
| 1 | C0 | my_SmallPad_0-8mmDrill | J7 |
| 1 | C1 | my_SmallPad_0-8mmDrill | J8 |
| 1 | C2 | my_SmallPad_0-8mmDrill | J9 |
| 1 | C3 | my_SmallPad_0-8mmDrill | J10 |
| 1 | C4 | my_SmallPad_0-8mmDrill | J11 |
Show 62 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C5 | my_SmallPad_0-8mmDrill | J12 |
| 1 | C6 | my_SmallPad_0-8mmDrill | J13 |
| 1 | C7 | my_SmallPad_0-8mmDrill | J14 |
| 1 | C11 | my_SmallPad_0-8mmDrill | J16 |
| 2 | 3.3VD | my_SmallPad_0-8mmDrill | J17, J18 |
| 2 | DGND | my_SmallPad_0-8mmDrill | J19, J20 |
| 1 | A0 | my_SmallPad_0-8mmDrill | J21 |
| 1 | A1 | my_SmallPad_0-8mmDrill | J22 |
| 1 | A2 | my_SmallPad_0-8mmDrill | J23 |
| 1 | A3 | my_SmallPad_0-8mmDrill | J24 |
| 1 | A4 | my_SmallPad_0-8mmDrill | J25 |
| 1 | A5 | my_SmallPad_0-8mmDrill | J26 |
| 1 | A6 | my_SmallPad_0-8mmDrill | J27 |
| 1 | A7 | my_SmallPad_0-8mmDrill | J28 |
| 1 | A9 | my_SmallPad_0-8mmDrill | J29 |
| 1 | A10 | my_SmallPad_0-8mmDrill | J30 |
| 1 | A11 | my_SmallPad_0-8mmDrill | J31 |
| 1 | A12 | my_SmallPad_0-8mmDrill | J32 |
| 1 | SWD | my_SmallPad_0-8mmDrill | J33 |
| 1 | SWC | my_SmallPad_0-8mmDrill | J34 |
| 1 | B0 | my_SmallPad_0-8mmDrill | J35 |
| 1 | B1 | my_SmallPad_0-8mmDrill | J36 |
| 1 | B2 | my_SmallPad_0-8mmDrill | J37 |
| 1 | SWO | my_SmallPad_0-8mmDrill | J38 |
| 1 | B4 | my_SmallPad_0-8mmDrill | J39 |
| 1 | B5 | my_SmallPad_0-8mmDrill | J40 |
| 1 | B6 | my_SmallPad_0-8mmDrill | J41 |
| 1 | B7 | my_SmallPad_0-8mmDrill | J42 |
| 1 | B8 | my_SmallPad_0-8mmDrill | J43 |
| 1 | B9 | my_SmallPad_0-8mmDrill | J44 |
| 1 | B10 | my_SmallPad_0-8mmDrill | J45 |
| 1 | B11 | my_SmallPad_0-8mmDrill | J46 |
| 1 | A15 | my_SmallPad_0-8mmDrill | J47 |
| 1 | A8(SCL) | my_SmallPad_0-8mmDrill | J48 |
| 3 | AGND | my_SmallPad_0-8mmDrill | J49, J51, J52 |
| 1 | Vcc | my_SmallPad_0-8mmDrill | J50 |
| 1 | NRST | my_SmallPad_0-8mmDrill | J53 |
| 1 | C10 | my_SmallPad_0-8mmDrill | J54 |
| 1 | C12 | my_SmallPad_0-8mmDrill | J55 |
| 1 | LED | LED_D3.0mm | D1 |
| 1 | 1N4007 | D_DO-35_SOD27_P7.62mm_Horizontal | D2 |
| 1 | 330R | my_R_2012(0805)_HandSoldering | FB1 |
| 2 | 100n | my_C_3225(1210)_HandSoldering | C1, C3 |
| 2 | 10n | my_C_1608(0603)_HandSoldering | C2, C4 |
| 4 | 1n | my_C_1608(0603)_HandSoldering | C5, C6, C10, C11 |
| 4 | 220p | my_C_1608(0603)_HandSoldering | C7, C8, C12, C13 |
| 2 | 10u | my_CP_Elec_5 | C9, C14 |
| 4 | 20p | my_C_1608(0603)_HandSoldering | C15, C16, C17, C18 |
| 2 | 2u2 | my_C_2012(0805)_HandSoldering | C19, C20 |
| 2 | 100u | my_C_D6.3mm_P2.50mm | C21, C41 |
| 16 | 100n | my_C_1608(0603)_HandSoldering | C22, C23, C24, C25, C30, C31, C32, C33 +8 |
| 5 | 10u | my_C_3216(1206)_HandSoldering | C26, C27, C28, C29, C43 |
| 1 | (4u7) | my_C_3216(1206)_HandSoldering | C44 |
| 3 | 1k | my_R_2012(0805)_HandSoldering | R1, R7, R38 |
| 2 | 1M | my_R_1608(0603)_HandSoldering | R2, R8 |
| 21 | 10k | my_R_1608(0603)_HandSoldering | R3, R4, R9, R10, R13, R14, R15, R16 +13 |
| 6 | 100R | my_R_2012(0805)_HandSoldering | R5, R6, R11, R12, R21, R31 |
| 4 | 2.2k | my_R_1608(0603)_HandSoldering | R19, R20, R29, R30 |
| 4 | 100k | my_R_1608(0603)_HandSoldering | R22, R32, R43, R44 |
| 1 | 47k | my_R_1608(0603)_HandSoldering | R33 |
| 2 | 2.2M | my_R_1608(0603)_HandSoldering | R35, R45 |
| 2 | (10k) | my_R_1608(0603)_HandSoldering | R37, R40 |
OwmBoard design files
The KiCad project lives in the kanengomibako/EffectsPedals repository on GitHub; these links point at the commit this page was built from.
OwmBoard: common questions
What microcontroller does the OwmBoard use?
The OwmBoard is built around the STM32F405RGT6, from the STM32 family.
How big is the OwmBoard PCB?
The OwmBoard measures 55.4 × 66 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the OwmBoard?
158 components, from 82 distinct parts. The full bill of materials is listed on this page.
Where can I download the OwmBoard design files?
From the kanengomibako/EffectsPedals repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the OwmBoard design in my own project?
Yes, under the terms of its Unlicense license, which kanengomibako chose for the repository.
Can I test firmware for the OwmBoard 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.
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