Kart bridge board
About the Kart bridge board
Kart bridge board is an open source STM32 PCB design by carbuncle01, published on GitHub. It is a 4-layer board measuring 60 × 30 mm, with 61 components from 28 distinct parts.
Its main chip is the STM32G0B1CBT6, from the STM32 family. Other key parts include the TMUX7236PWR, MCP1703AT-3302E/CB, USBLC6-2SC6 and HX61CN5002MR. By type, the board carries 26 resistors, 15 capacitors, 7 connectors, 5 ICs, 4 transistors and 2 switches.
From the project
Rev.1はGitタグJPBB-01-Rev.1で復元できます。Rev.2の価格差と発注値はリポジトリ直下のdocs/rev2costoptimization.mdを参照してください。
Rev.1はGitタグJPBB-01-Rev.1で復元できます。Rev.2の価格差と発注値はリポジトリ直下のdocs/rev2costoptimization.mdを参照してください。
- 配線・書き込み操作の余裕を確保するため外形は60 × 30 mm。H1/H2はなく、B面中央の20 × 12 mm平坦領域へ両面テープで固定する。 - 4層・1.0 mmと連続In1 GNDを維持し、JLCPCB標準積層、標準FR-4 TG135、Lead-free HASLを選ぶ。インピーダンス管理は指定しない。 - 全ビア穴径は0.30 mm以上。 - 抵抗とセラミックコンデンサは0402（1005 metric）。C1だけはEEHZK1E101UP（100 µF / 25 V、LCSC C454668）の導電性高分子ハイブリッドアルミ電解SMD。 - U1はSTM32G0B1CBT6（LCSC C2847904、128 KiB）。ファームウェア容量を確認し、旧BOMと混在させない。 - U2はTMUX7236PWR（LCSC C37096021）。在庫が少ない可能性があるため、発注直前に在庫を確保する。 - C2、Y1、C12、C13、TP9〜TP12はRev.2に存在しない。 - USBクロックは外部水晶ではなくSTM32G0B1のHSI48/CRSを使う。 -…
Main components on the Kart bridge board
Kart bridge board bill of materials (BOM)
61 components, 28 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32G0B1CBT6 STMicroelectronics | LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | TMUX7236PWR Texas Instruments | TSSOP-16_4.4x5mm_P0.65mm | U2 |
| 1 | MCP1703AT-3302E/CB Microchip Technology | SOT-23 | U3 |
| 1 | USBLC6-2SC6 STMicroelectronics | SOT-23-6 | U4 |
| 1 | HX61CN5002MR HANSCHIP semiconductor | SOT-23 | U5 |
| 4 | MMBT3904LT1G onsemi | SOT-23 | Q1, Q2, Q3, Q4 |
| 1 | 2.54-1*3P Pin RX_CH1 BOOMELE | RC_Header_1x03_P2.54mm | J1 |
| 1 | 2.54-1*3P Pin RX_CH2 BOOMELE | RC_Header_1x03_P2.54mm | J2 |
| 1 | 2.54-1*3P Pin RX_CH3 BOOMELE | RC_Header_1x03_P2.54mm | J3 |
| 1 | 2.54-1*3P Pin SERVO_OUT BOOMELE | RC_Header_1x03_P2.54mm | J4 |
| 1 | 2.54-1*3P Pin ESC_OUT_BEC_IN BOOMELE | RC_Header_1x03_P2.54mm | J5 |
| 1 | TYPE-C-31-M-12 USB_C_USB2.0_DEVICE Korean Hroparts Elec | USB_C_Receptacle_HRO_TYPE-C-31-M-12_Edge | J6 |
| 1 | FTSH-105-01-L-DV-007-K ARM_CORTEX_SWD_10 Samtec | Samtec_FTSH-105-01-L-DV-007-K | J7 |
| 1 | TS-1088-AR02016 RESET XUNPU | SW_SPST_TS-1088-xR020 | SW1 |
| 1 | TS-1088-AR02016 BOOT XUNPU | SW_SPST_TS-1088-xR020 | SW2 |
| 2 | 1N4148W MDD(Microdiode Semiconductor) | D_SOD-123 | D1, D2 |
| 1 | EEHZK1E101UP 100uF 25V Panasonic | CP_Panasonic_D6.3x5.8 | C1 |
| 4 | CL05A105KA5NQNC 1uF Samsung Electro-Mechanics | C_0402_1005Metric | C3, C4, C10, C15 |
| 7 | CL05B104KO5NNNC 100nF Samsung Electro-Mechanics | C_0402_1005Metric | C5, C7, C9, C11, C14, C16, C17 |
| 1 | CL05B103KB5NNNC 10nF Samsung Electro-Mechanics | C_0402_1005Metric | C6 |
Show 8 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | CL10A475KO8NNNC 4.7uF 16V Samsung Electro-Mechanics | C_0603_1608Metric | C8, C18 |
| 6 | 0402WGF1003TCE 100k UNI-ROYAL | R_0402_1005Metric | R1, R12, R15, R18, R24, R27 |
| 1 | 0402WGF2202TCE 22k UNI-ROYAL | R_0402_1005Metric | R2 |
| 2 | 0402WGF5101TCE 5.1k UNI-ROYAL | R_0402_1005Metric | R3, R4 |
| 2 | 0402WGF0000TCE 0R UNI-ROYAL | R_0402_1005Metric | R5, R6 |
| 4 | 0402WGF4702TCE 47k UNI-ROYAL | R_0402_1005Metric | R7, R11, R14, R17 |
| 7 | 0402WGF1002TCE 10k UNI-ROYAL | R_0402_1005Metric | R8, R9, R10, R13, R16, R19, R21 |
| 4 | 0402WGF1001TCE 1k UNI-ROYAL | R_0402_1005Metric | R20, R22, R23, R26 |
Kart bridge board design files
The KiCad project lives in the carbuncle01/kart_bridge_board repository on GitHub; these links point at the commit this page was built from.
Kart bridge board: common questions
What microcontroller does the Kart bridge board use?
The Kart bridge board is built around the STM32G0B1CBT6, from the STM32 family.
How big is the Kart bridge board?
The Kart bridge board measures 60 × 30 mm, has 4 copper layers and is 1 mm thick.
How many components are on the Kart bridge board?
61 components, from 28 distinct parts. The full bill of materials is listed on this page.
Where can I download the Kart bridge board design files?
From the carbuncle01/kart_bridge_board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Kart bridge board design in my own project?
The repository has no license, so all rights stay with carbuncle01. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Kart bridge board 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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