Polygonus
About the Polygonus PCB
Polygonus is an open source STM32 PCB design by FOME-Tech, published on GitHub. It is a 4-layer board measuring 103 × 82.4 mm, with 299 components from 65 distinct parts.
Its main chip is the STM32F767ZIT6, from the STM32 family. Other key parts include the PSM712-LF-T7, TLS115D0E, LMR14020, MCP2551-I-SN and AMS1117-3.3. By type, the board carries 134 resistors, 100 capacitors, 39 ICs, 17 diodes, 3 inductors and 2 fuses.
It belongs with the sensors designs in this gallery.
From the project
Polygonus - Brain board for FOME ecus
This is an ECU "brain module". Combined with a "base board", it forms a functional engine control unit compatible with FOME firmware. It is not intended to run an engine without being mated to a base board.
This module is a derivative of the Proteus ECU: for the most part, it is a Proteus with the AMPSEAL connectors replaced with 0.1" headers. It is 100% firmware compatible with Proteus, and indeed uses the Proteus FOME firmware build.
Main components on the Polygonus
Polygonus bill of materials (BOM)
299 components, 65 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PSM712-LF-T7 | SOT-23 | IC1 |
| 2 | TLS115D0E | Infineon_PG-DSO-8-43 | U1, U2 |
| 1 | LMR14020 | SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm | U3 |
| 2 | MCP2551-I-SN | SOIC-8_3.9x4.9mm_P1.27mm | U4, U5 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U6 |
| 5 | MCP6004T-I/ST MCP6004 | TSSOP-14_4.4x5mm_P0.65mm | U7, U15, U17, U19, U21 |
| 4 | 74HC2G17GW SN74LVC2G17DB | SOT-23-6 | U8, U9, U10, U14 |
| 7 | SRV05-4 | SOT-23-6 | U11, U12, U13, U16, U18, U20, U22 |
| 1 | REF3033 REF3333 | SOT-23 | U23 |
| 1 | LPS25HB | ST_HLGA-10_2.5x2.5mm_P0.6mm_LayoutBorder3x2y | U24 |
| 1 | STM32F767ZIT6 STM32F767ZITx | LQFP-144_20x20mm_P0.5mm | U26 |
| 1 | USBLC6-2 USBLC6-2SC6 | SOT-23-6 | U27 |
| 1 | BTS716G | Infineon_PG-DSO-20-32 | U40 |
| 1 | MIC5205-3.3YM5 | SOT-23-5 | U41 |
| 4 | TC4427EOA MIC4427 | SO-8_3.9x4.9mm_P1.27mm | U42, U43, U44, U45 |
| 6 | VNLD5090 | SOIC-8_3.9x4.9mm_P1.27mm | U1001, U1002, U1101, U1102, U1201, U1202 |
| 1 | 8MHZ 8MHz | Crystal_SMD_5032-2Pin_5.0x3.2mm | Y1 |
| 1 | 47219-2001 Micro_SD_Card | microSD_HC_Wuerth_693072010801 | J10 |
| 2 | 1206L012WR Polyfuse | R_1206_3216Metric | F1, F2 |
| 2 | SW_Push | SW_SPST_EVQQ2 | SW1, SW2 |
Show 45 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SM15T33CA | D_SMC | D1 |
| 2 | C8678 D_Schottky | D_SMA | D2, D3 |
| 2 | PESD1CAN-UX | SOT-323_SC-70 | D4, D5 |
| 6 | C8598 schottky | D_SOD-123 | D6, D7, D8, D14, D16, D17 |
| 2 | C72043 GREEN | LED_0603_1608Metric_Castellated | D9, D12 |
| 1 | C2286 RED | LED_0603_1608Metric_Castellated | D10 |
| 1 | C72041 BLUE | LED_0603_1608Metric_Castellated | D11 |
| 1 | C72038 ORANGE | LED_0603_1608Metric_Castellated | D13 |
| 1 | SRV05-4 | SOT-23-6 | D15 |
| 1 | C1015 Ferrite_Bead | L_0805_2012Metric | FB1 |
| 1 | SRN3015TA-2R2M 2.2u | L_1210_3225Metric | L1 |
| 1 | MWSA0503S-100MT 10u | MWSA0503 | L2 |
| 6 | 1u | C_0603_1608Metric | C2, C3, C5, C7, C9, C84 |
| 3 | 4.7U 4.7u | C_0603_1608Metric | C4, C14, C82 |
| 14 | 10N 10n | C_0603_1608Metric | C8, C15, C85, C86, C87, C88, C93, C94 +6 |
| 24 | 100N 100n | C_0603_1608Metric | C10, C40, C41, C46, C51, C56, C61, C62 +16 |
| 3 | 330P 330p | C_0402_1005Metric | C11, C20, C21 |
| 2 | 10U 10u | C_1206_3216Metric | C12, C13 |
| 2 | 3.3N 3.3n | C_0805_2012Metric | C16, C17 |
| 2 | 680P 680p | C_0603_1608Metric | C18, C19 |
| 2 | 47P 47p | C_0402_1005Metric | C22, C23 |
| 16 | 1n | C_0603_1608Metric | C24, C25, C26, C27, C28, C29, C30, C31 +8 |
| 16 | 100N 100n | C_0402_1005Metric | C42, C43, C44, C45, C47, C48, C49, C50 +8 |
| 5 | CGA3E2X7R1H103M080AA 4.7u | C_0603_1608Metric | C65, C66, C72, C76, C80 |
| 2 | 33P 33p | C_0402_1005Metric | C74, C75 |
| 3 | 2.2U 2.2u | C_0603_1608Metric | C77, C78, C90 |
| 24 | 10K 10k | R_0402_1005Metric | R1, R3, R4, R47, R48, R49, R50, R59 +16 |
| 1 | 1 | R_0402_1005Metric | R2 |
| 3 | 12K 12k | R_0402_1005Metric | R5, R17, R18 |
| 1 | 68K 68k | R_0402_1005Metric | R6 |
| 2 | 10 | R_0603_1608Metric | R7, R8 |
| 4 | 120 | R_0603_1608Metric | R9, R10, R101, R102 |
| 4 | 33K 33k | R_0402_1005Metric | R11, R12, R21, R22 |
| 5 | 100K 100k | R_0402_1005Metric | R13, R14, R19, R20, R98 |
| 14 | 470K 470k | R_0402_1005Metric | R15, R16, R51, R52, R53, R54, R63, R64 +6 |
| 20 | 2.7K 2.7k | R_0603_1608Metric | R23, R24, R25, R26, R27, R28, R29, R30 +12 |
| 16 | 5.6K 5.6k | R_0402_1005Metric | R43, R44, R45, R46, R55, R56, R57, R58 +8 |
| 10 | 1k | R_0402_1005Metric | R87, R88, R1501, R1502, R1503, R1504, R1601, R1602 +2 |
| 5 | 330 | R_0402_1005Metric | R91, R92, R93, R94, R95 |
| 1 | 82K 82k | R_0603_1608Metric | R96 |
| 5 | 4.7K 4.7k | R_0805_2012Metric | R103, R104, R105, R106, R107 |
| 8 | 100 | R_0805_2012Metric | R108, R109, R110, R111, R112, R113, R114, R115 |
| 1 | CAT16-473J4LF 10k | R_Array_Convex_4x0603 | RN1 |
| 4 | CAT16-1002F4LF 10k | R_Array_Convex_4x0603 | RN2, RN3, RN4, RN11 |
| 6 | 1k | R_Array_Convex_4x0603 | RN5, RN6, RN7, RN8, RN9, RN10 |
Polygonus design files
The KiCad project lives in the FOME-Tech/Polygonus repository on GitHub; these links point at the commit this page was built from.
Polygonus: common questions
What microcontroller does the Polygonus use?
The Polygonus is built around the STM32F767ZIT6, from the STM32 family.
How big is the Polygonus PCB?
The Polygonus measures 103 × 82.4 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Polygonus?
299 components, from 65 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 Polygonus design files?
From the FOME-Tech/Polygonus 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 Polygonus design in my own project?
The repository has no license, so all rights stay with FOME-Tech. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Polygonus 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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