NX J401 Adapter
About the NX J401 Adapter PCB
NX J401 Adapter is an open source STM32 PCB design by RealtimeRoboticsGroup, published on GitHub under the SHL-2.1 license. It is a 4-layer board measuring 119.6 × 99.2 mm, with 127 components from 57 distinct parts.
Its main chip is the STM32G431CBTX, from the STM32 family. Other key parts include the LM74700QDBVRQ1, TPS613222ADBV, LM5176PWPR, ISO6721BDR and FT232RNL. By type, the board carries 56 capacitors, 25 resistors, 11 connectors, 9 transistors, 9 diodes and 8 ICs.
From the project
This project is open-source hardware and is licensed under the Solderpad Hardware License v2.1 (the "License"), which is a permissive license based on the Apache License, Version 2.0.
This project is open-source hardware and is licensed under the Solderpad Hardware License v2.1 (the "License"), which is a permissive license based on the Apache License, Version 2.0.
You may use this work under the terms of the Solderpad Hardware License v2.1, or, at your option, under the terms of the Apache License, Version 2.0.
- Solderpad v2.1: Solderpad Hardware License v2.1 - Solderpad Hardware License
Main components on the NX J401 Adapter
NX J401 Adapter bill of materials (BOM)
127 components, 57 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | LM74700QDBVRQ1 | SOT-23-6 | U1, U7 |
| 1 | TPS613222ADBV | SOT-23-5 | U2 |
| 1 | STM32G431CBTX STM32G431CBTx | LQFP-48_7x7mm_P0.5mm | U3 |
| 1 | LM5176PWPR | HTSSOP-28-1EP_4.4x9.7mm_P0.65mm_EP3.4x9.5mm_ThermalVias | U4 |
| 1 | ISO6721BDR | SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | FT232RNL | SSOP-28_5.3x10.2mm_P0.65mm | U6 |
| 1 | TJA1051T/3/1J | SO-8_3.9x4.9mm_P1.27mm | U8 |
| 4 | CSD19534Q5A | TI-SON5x6 | Q1, Q6, Q8, Q9 |
| 2 | SI2301CDS-T1-GE3 | SOT-23 | Q2, Q7 |
| 2 | CSD17578Q5A | TI-SON5x6 | Q3, Q4 |
| 1 | SS8050 | SOT-23 | Q5 |
| 2 | XXXXXX Terminal | Keystone-7774 | J1, J2 |
| 1 | XXXXXX NX CONTROL & UART | PinHeader_1x15_P2.54mm_Horizontal | J3 |
| 1 | 15V | Molex_Micro-Fit_3.0_43650-0200_1x02_P3.00mm_Horizontal | J4 |
| 2 | XXXXXX NX CONTROL & UART | PinSocket_1x15_P2.54mm_Vertical | J5, J6 |
| 1 | USB1 | Molex-PicoLatch-5040500491 | J7 |
| 1 | XXXXXX SWD | PinHeader_1x05_P2.54mm_Horizontal | J8 |
| 1 | CAN1 | Molex-70555-0001 | J9 |
| 1 | XXXXXX POWER | Molex_Micro-Fit_3.0_43650-0200_1x02_P3.00mm_Horizontal | J10 |
| 1 | USB_C_RECEPTACLE_USB2.0_14P USB_C_Receptacle_USB2.0_14P | GCT-USB-C-USB4110-GF-A | J11 |
Show 37 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | XXXXXX Light Pipe | Bivar-SLP3-150-100-F | LP1, LP2, LP3, LP4 |
| 1 | XXXXXX RESET | SW_TL1105VF100Q_EWI | SW1 |
| 1 | XXXXXX RECOVERY | SW_TL1105VF100Q_EWI | SW2 |
| 1 | 24V | D_SMC_Littelfuse_DO-214AB | D1 |
| 1 | C5123493 PWR | LED_1206_3216Metric | D2 |
| 1 | C5123493 PC | LED_1206_3216Metric | D3 |
| 1 | C965824 STAT | LED_1206_3216Metric | D4 |
| 1 | C965824 WORD | LED_1206_3216Metric | D5 |
| 3 | BAT54KFILM | D_SOD-523 | D6, D7, D8 |
| 1 | PESD1CAN | SOT-23 | D9 |
| 1 | C2847559 2.2uH-19A-5.1mohm-20% | Koher-MDA1050 | L1 |
| 1 | C2847469 2.2uH-41mOhm-20% | KOHER-MDA4020-2R2M | L2 |
| 1 | HZ0805E601R-10 | L_0805_2012Metric | L3 |
| 23 | C77102 10uF-50V-10%-X7R-1210 | C_1210_3225Metric | C1, C2, C3, C4, C5, C6, C7, C8 +15 |
| 18 | C14663 0.1uF-50V-10%-0603 | C_0603_1608Metric | C11, C20, C21, C22, C25, C29, C32, C34 +10 |
| 5 | C296720 22uF-10%-16V-0805 | C_0805_2012Metric | C13, C16, C17, C30, C47 |
| 2 | C107095 5.6nF-10%-50V-0603 | C_0603_1608Metric | C26, C28 |
| 3 | C2168903 47pF-50V-10%-0603 | C_0603_1608Metric | C27, C55, C56 |
| 1 | C107084 270pF-10%-50V-0603 | C_0603_1608Metric | C31 |
| 2 | C107076 15nF-10%-50V-0603 | C_0603_1608Metric | C33, C42 |
| 1 | C107075 150pF-50V-10%-0603 | C_0603_1608Metric | C35 |
| 1 | C105174 1uF-50V-10%-0603 | C_0603_1608Metric | C36 |
| 2 | C22548 1K-1%-0603 | R_0603_1608Metric | R1, R2 |
| 1 | C227834 357K-1%-0603 | R_0603_1608Metric | R3 |
| 3 | C137796 13K-1%-0603 | R_0603_1608Metric | R4, R11, R15 |
| 1 | C105575 20K-1%-0603 | R_0603_1608Metric | R5 |
| 1 | C23071 5.9k-1%-0603 | R_0603_1608Metric | R6 |
| 2 | C105588 100R-1%-0603 | R_0603_1608Metric | R7, R8 |
| 1 | C105578 1M-1%-0603 | R_0603_1608Metric | R9 |
| 4 | C100044 0R-1%-0603 | R_0603_1608Metric | R10, R13, R18, R22 |
| 2 | C228101 93.1k-1%-0603 | R_0603_1608Metric | R12, R19 |
| 1 | C723413 10mOhm-3W-1%-2512 | R_2512_6332Metric | R14 |
| 1 | C22949 205K-1%-0603 | R_0603_1608Metric | R16 |
| 2 | C105576 2K-1%-0603 | R_0603_1608Metric | R17, R23 |
| 1 | C109318 10R0-1%-0603 | R_0603_1608Metric | R20 |
| 1 | C706146 249K-1%-0603 | R_0603_1608Metric | R21 |
| 2 | C105580 5.1k-1%-0603 | R_0603_1608Metric | R24, R25 |
NX J401 Adapter design files
The KiCad project lives in the RealtimeRoboticsGroup/electrical repository on GitHub; these links point at the commit this page was built from.
NX J401 Adapter: common questions
What microcontroller does the NX J401 Adapter use?
The NX J401 Adapter is built around the STM32G431CBTX, from the STM32 family.
How big is the NX J401 Adapter PCB?
The NX J401 Adapter measures 119.6 × 99.2 mm, has 4 copper layers and is 1.564394 mm thick.
How many components are on the NX J401 Adapter?
127 components, from 57 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 NX J401 Adapter design files?
From the RealtimeRoboticsGroup/electrical repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the NX J401 Adapter design in my own project?
It is published under SHL-2.1, which limits how it may be reused; read the license before building on it.
Can I test firmware for the NX J401 Adapter 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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Earlier revisions in the repo: NX-J401-Adapter-v6, NX-J401-Adapter
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