Universal interface adapter
About the Universal interface adapter PCB
Universal interface adapter is an open source STM32 PCB design by 411568, published on GitHub. It is a 4-layer board measuring 175 × 110 mm, with 270 components from 74 distinct parts.
Its main chip is the STM32F446VETX, from the STM32 family. Other key parts include the ADM3251EARWZ-REEL, USBLC6-2SC6, LTV-356T, SN65HVD230 and TXB0102DCU. By type, the board carries 85 resistors, 58 capacitors, 44 connectors, 35 diodes, 22 jumpers and 13 ICs.
It belongs with the sensors, robotics & motion and test & measurement designs in this gallery.
From the project
An open-source industrial communication and I/O platform for embedded development, automation, diagnostics, and rapid prototyping.
The Universal Interface Adapter (UIA) is a compact, open-source hardware platform designed to bridge embedded systems with industrial and legacy communication interfaces.
Built around an STM32F446 microcontroller, the board combines communication buses, isolated digital inputs, relay outputs, MOSFET drivers, analog I/O, and general-purpose digital interfaces into a single development and integration platform.
Main components on the Universal interface adapter
Universal interface adapter bill of materials (BOM)
270 components, 74 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ADM3251EARWZ-REEL | SOIC127P1032X265-20N | IC1 |
| 1 | USBLC6-2SC6 | SOT-23-6 | U1 |
| 1 | STM32F446VETX STM32F446VETx | LQFP-100_14x14mm_P0.5mm | U2 |
| 3 | LTV-356T | SO-4_4.4x3.6mm_P2.54mm | U3, U4, U5 |
| 1 | SN65HVD230 | SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | TXB0102DCU | VSSOP-8_2.3x2mm_P0.5mm | U7 |
| 1 | ADM2582E | SOIC-20W_7.5x12.8mm_P1.27mm | U8 |
| 1 | OPA197XD OPA197xD | SOIC-8_3.9x4.9mm_P1.27mm | U9 |
| 2 | RPX-2.5-R | CONV_RPX-2.5-R | U10, U11 |
| 1 | TEA1-0505 | Converter_DCDC_TRACO_TEA1-xxxx_THT | U12 |
| 6 | IRLML6244 | SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6 |
| 1 | 8MHZ 8MHz | Crystal_SMD_HC49-SD | Y1 |
| 1 | CONN_01X08_MALE Conn_01x08_Male | PinHeader_1x08_P2.54mm_Horizontal | J1 |
| 1 | USB4800-03-A_REVA | GCT_USB4800-03-A_REVA | J2 |
| 8 | Phoenix | PhoenixContact_MC_1,5_3-G-3.5_1x03_P3.50mm_Horizontal | J3, J4, J17, J19, J35, J36, J41, J42 |
| 8 | Goldpin | PinHeader_1x03_P2.54mm_Vertical | J5, J6, J18, J21, J37, J38, J43, J44 |
| 6 | Goldpin | PinHeader_1x02_P2.54mm_Vertical | J7, J8, J11, J24, J25, J26 |
| 6 | Phoenix | PhoenixContact_MC_1,5_2-G-3.5_1x02_P3.50mm_Horizontal | J9, J10, J12, J23, J27, J28 |
| 5 | Phoenix | PhoenixContact_MC_1,5_4-G-3.5_1x04_P3.50mm_Horizontal | J13, J15, J31, J33, J34 |
| 5 | Goldpin | PinHeader_1x04_P2.54mm_Vertical | J14, J16, J32, J39, J40 |
Show 54 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Phoenix | PhoenixContact_MC_1,5_5-G-3.5_1x05_P3.50mm_Horizontal | J20 |
| 1 | Goldpin | PinHeader_1x05_P2.54mm_Vertical | J22 |
| 1 | CONN_01X02 Conn_01x02 | PhoenixContact_MC_1,5_2-G-3.5_1x02_P3.50mm_Horizontal | J29 |
| 1 | Barrel_Jack_Switch | BarrelJack_GCT_DCJ200-10-A_Horizontal | J30 |
| 3 | RF1406-000 | Fuse_1812_4532Metric_Pad1.30x3.40mm_HandSolder | F1, F2, F3 |
| 19 | Jumper | PinHeader_1x02_P2.54mm_Vertical | JP1, JP2, JP3, JP4, JP8, JP9, JP10, JP11 +11 |
| 1 | HS | PinHeader_1x02_P2.54mm_Vertical | JP5 |
| 1 | LP | PinHeader_1x02_P2.54mm_Vertical | JP6 |
| 1 | SC | PinHeader_1x02_P2.54mm_Vertical | JP7 |
| 2 | LEG-5 | RELAY_LEG-24 | K1, K2 |
| 1 | SW_Push | SW_SPST_TL3342 | SW1 |
| 6 | LED_RED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D2, D7, D8, D10, D13 |
| 11 | D | D_SMA_Handsoldering | D3, D4, D5, D6, D9, D11, D12, D14 +3 |
| 1 | LED_ORANGE | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D16 |
| 1 | LED_YELLOW | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D17 |
| 1 | LED_GREEN | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D18 |
| 10 | D_TVS_Small | D_SMA_Handsoldering | D19, D20, D21, D22, D23, D24, D25, D26 +2 |
| 1 | 35V TVS | D_SMA_Handsoldering | D31 |
| 4 | LED GREEN | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D32, D33, D34, D35 |
| 2 | 20P 20p | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2 |
| 12 | 100N 100n | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3, C5, C6, C7, C9, C11, C13, C15 +4 |
| 1 | 4.7U 4.7u | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C4 |
| 15 | 100N 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8, C21, C24, C25, C26, C28, C29, C30 +7 |
| 2 | 2.2U 2.2u | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C10, C12 |
| 1 | 1u | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C14 |
| 4 | 1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C19, C20, C57, C58 |
| 3 | 10U 10u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C22, C23, C33 |
| 3 | 10N 10n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C27, C32, C42 |
| 7 | 10U 10u | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C40, C43, C44, C45, C46, C47, C48 |
| 4 | 22U 22u | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C49, C50, C51, C52 |
| 4 | 22U 22u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C53, C54, C55, C56 |
| 3 | DNP | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R5, R6 |
| 2 | 20 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2, R3 |
| 2 | 5.1K 5.1k | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R4, R7 |
| 2 | 10K 10k | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R8, R9 |
| 1 | 33K 33k | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R10 |
| 1 | 82K 82k | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R11 |
| 7 | 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R12, R13, R29, R32, R33, R34, R35 |
| 13 | 2.2K 2.2k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R14, R15, R24, R25, R28, R42, R43, R46 +5 |
| 19 | 10K 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R16, R17, R20, R21, R22, R23, R30, R36 +11 |
| 2 | 4.7K 4.7k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R18, R19 |
| 3 | 200 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R26, R27, R31 |
| 4 | 100 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R40, R41, R44, R45 |
| 1 | 47K 47k | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R48 |
| 2 | 120 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R49, R57 |
| 12 | 10 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R50, R51, R53, R54, R79, R80, R81, R82 +4 |
| 2 | 560 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R55, R56 |
| 1 | 30K 30k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R59 |
| 1 | 15K 15k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R60 |
| 1 | 0 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R61 |
| 2 | 1.5K 1.5k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R63, R65 |
| 2 | 3.3K 3.3k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R66, R67 |
| 1 | 1.37K 1.37k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R70 |
| 1 | 2.21K 2.21k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R71 |
Universal interface adapter design files
The KiCad project lives in the 411568/Universal_interface_adapter repository on GitHub; these links point at the commit this page was built from.
Universal interface adapter: common questions
What microcontroller does the Universal interface adapter use?
The Universal interface adapter is built around the STM32F446VETX, from the STM32 family.
How big is the Universal interface adapter PCB?
The Universal interface adapter measures 175 × 110 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Universal interface adapter?
270 components, from 74 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 Universal interface adapter design files?
From the 411568/Universal_interface_adapter 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 Universal interface adapter design in my own project?
The repository has no license, so all rights stay with 411568. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Universal interface 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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