Micro core
About the Micro core PCB
Micro core is an open source PCB design by quintinbannink42, published on GitHub. It is a 4-layer board measuring 90 × 76.6 mm, with 49 components from 12 distinct parts.
Other key parts include the SLM27524CA-DG. By type, the board carries 14 diodes, 11 resistors, 8 capacitors, 7 transistors, 4 ICs and 3 modules.
From the project
Core EFI Micro Core — Hellen-One rusEFI ECU, 35-way AMPSEAL, vertical header
Core EFI Hellen-One rusEFI ECU. Microsquirt-class sealed box, 35-way AMPSEAL, vertical header.
4-cylinder sequential wire-in. STM32F407VGT6 on Hellen mega-mcu100/0.3 (not mega-mcu64). Seven NCE4080K power FETs: 4 injector channels (2× high-Z each) plus fuel-pump, idle, and boost low-sides with US1M flyback and SMAJ33A. Gates are driven from /V12RAW` by SLM27524CA-DG low-side drivers, not directly from the 3.3 V GPIO.
Main components on the Micro core
Micro core bill of materials (BOM)
49 components, 12 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | SLM27524CA-DG | SOIC-8 | U1, U2, U3, U4 |
| 1 | Module:mega-mcu100/0.3 | mega-mcu100 | M1 |
| 1 | Module-power_12and5V-0.3 | power_12and5V | M2 |
| 1 | Module-vr-max9924-0.3 | vr-max9924 | M3 |
| 7 | VND14NV04-E NCE4080K | DPAK | Q1, Q2, Q3, Q4, Q5, Q6, Q7 |
| 1 | TE_776231-1 | TE_776231 | J1 |
| 1 | C13453 USB_B_Mini | USB-MINI-B-VERTICAL | J8 |
| 7 | US1M | DO214AC | D1, D2, D3, D4, D9, D10, D11 |
| 7 | SMAJ33A | DO214AC | D5, D6, D7, D8, D12, D13, D14 |
| 4 | 100n | C0603 | C1, C3, C5, C7 |
| 4 | 1u | C0603 | C2, C4, C6, C8 |
| 11 | 12 | R0603 | R1, R2, R3, R4, R5, R6, R7, R8 +3 |
Micro core design files
The KiCad project lives in the quintinbannink42/micro-core repository on GitHub; these links point at the commit this page was built from.
Micro core: common questions
How big is the Micro core PCB?
The Micro core measures 90 × 76.6 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Micro core?
49 components, from 12 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 Micro core design files?
From the quintinbannink42/micro-core 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 Micro core design in my own project?
The repository has no license, so all rights stay with quintinbannink42. Use it as a reference, and ask the author before reusing the design.