2 layers46.5 × 37.4 mm
Hellen1-mcu
rusefi/hellen-miata-NB2
a rusEFI board with a 72 pin connector. Works for a Mazda Miata NB2 or any generic 8 cylinder vehicle :)
92 parts
2 layers154 × 159 mm
Hellen1-72
rusefi/hellen-miata-NB2a rusEFI board with a 72 pin connector. Works for a Mazda Miata NB2 or any generic 8 cylinder vehicle :)
- Size
- 154 × 159 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 163
- Nets
- 209
- Pads
- 835
- Tracks, vias
- 2,996, 488
- Pours
- 32
- Routed
- Yes
- KiCad
- KiCad 5 (file 20210108)
- Created
- 30 Dec 2020
- Updated
- 23 May 2022
Overview
Hellen1-72 is an open-source printed circuit board by rusefi, from the rusefi/hellen-miata-NB2 repository on GitHub. It is a 2-layer board of 154 × 159 mm with 163 parts on 209 nets, routed with 2,996 tracks and 488 vias.
It is built around the QMA7981, 1N4148WS and GZ2012D101TF. Its parts include 69 diodes, 26 resistors, 10 connectors, 5 capacitors and 2 ICs.
Main components
3
QMA7981
LGA-12(2x2)-40℃~+85℃ 1.71V~3.6V 14bit 1uA Accelerometer SPI、I2C X,Y,Z ±32g LGA-12(2x2) Accelerometers ROHSQSTAccelerometers
1N4148WS
SOD-3231.25V@150mA 100V 150mA 1uA@75V 200mW 2A 4ns Independent SOD-323 Switching Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Switching Diodes
GZ2012D101TF
08051 100Ω@100MHz 150mΩ 800mA ±25% 0805 Ferrite Beads ROHSSunlordFerrite Beads
README
README.mdMiata NB2
a rusEFI board with a 72 pin connector. Works for a Mazda Miata NB2 or any generic 8 cylinder vehicle :)
We love https://github.com/thesourcerer8/altium2kicad
https://github.com/rusefi/rusefi/wiki/Mazda-Miata-2001
https://github.com/rusefi/rusefi/wiki/Mazda-Miata-2003
For photos see https://github.com/rusefi/rusefi/wiki/Hellen-NB2
Compatible cases
89661-3T270
Hardware
M4 x 10mm will be good for NB external case and internal board to case for both NA and NB.
Powered by https://github.com/andreika-git/hellen-one
Parts
163| Qty | Value | Footprint | References |
|---|---|---|---|
| 37 | , , , , , , , , , , , , , , , +21 | ||
| 36 | 0603-White | General.pcblib:LED | D10, D11, D12, D13, D14, D15, D16, D17, D29, D30, D31, D32, D33, D34, D35, D36 +20 |
| 29 | 1N4148WS | General.pcblib:Diode | D1, D2, D3, D18, D19, D20, D21, D22, D23, D24, D25, D26, D27, D28, D40, D41 +13 |
| 13 | 0 | General.pcblib:Res | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R25, R26 |
| 7 | 4k7 | Small.PcbLib:Res Array 4 | R13, R17, R18, R20, R21, R22, R23 |
| 5 | 100n | General.pcblib:Cap | C1, C2, C3, C4, C5 |
| 4 | 0805-Green | General.pcblib:LED | D4, D5, D6, D9 |
| 4 | 470 | Small.PcbLib:Res Array 4 | R14, R15, R16, R19 |
| 2 | Switch SPST | General.pcblib:Switch SPST | S1, S2 |
| 1 | +12 | General.pcblib:Pad | P4 |
| 1 | +3.3 | General.pcblib:Pad | P6 |
| 1 | +5 | General.pcblib:Pad | P5 |
| 1 | 1k | General.pcblib:Res | R12 |
| 1 | 2.2k | General.pcblib:Res | R24 |
| 1 | Abs. Pressure Sensor | TH.PcbLib:MPX4250AP | U1 |
| 1 | Ext.Port | General.pcblib:Header 2x12 | P3 |
| 1 | External SD-Card Board | General.pcblib:Header 1x6 | P2 |
| 1 | GND | General.pcblib:Pad | P7 |
| 1 | GZ2012D101TF | General.pcblib:Inductor | L1 |
| 1 | Module:can/0.1 | Mod.PcbLib:Mod-Hellen-CAN | M10 |
| 1 | Module:ign8/0.1 | Mod.PcbLib:Mod-Hellen-IGN8 | M8 |
| 1 | Module:input/0.1 | Mod.PcbLib:Mod-Hellen-Input | M1 |
| 1 | Module:knock/0.1 | Mod.PcbLib:Mod-Hellen-Knock | M6 |
| 1 | Module:lin/0.1 | Mod.PcbLib:Mod-Hellen-LIN | M9 |
| 1 | Module:mcu/0.1 | Mod.PcbLib:Mod-Hellen-MCU | M2 |
| 1 | Module:output/0.1 | Mod.PcbLib:Mod-Hellen-Output | M7 |
| 1 | Module:power12/0.1 | Mod.PcbLib:Mod-Hellen-Power12 | M5 |
| 1 | Module:power5/0.1 | Mod.PcbLib:Mod-Hellen-Power5 | M3 |
| 1 | Module:sd/0.1 | Mod.PcbLib:Mod-Hellen-SD | M4 |
| 1 | Module:stlink/0.1 | Mod.PcbLib:Mod-Hellen-STLink | M11 |
| 1 | Net Tie | General.pcblib:Net Tie | J1 |
| 1 | QMA7981 | IC.PcbLib:QMA7981 | U2 |
| 1 | TE-1123038-2 | TH.PcbLib:CONN-TE-72Pin | P1 |
| 1 | USB-Adapter | TH.PcbLib:Conn USB | J3 |
| 1 | USB-B | TH.PcbLib:Conn USB | J2 |
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Questions
How big is the Hellen1-72 PCB?
It measures 154 × 159 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hellen1-72 use?
163 parts, built around the QMA7981, 1N4148WS and GZ2012D101TF. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Hellen1-72 KiCad files?
From the rusefi/hellen-miata-NB2 repository on GitHub, at the commit this page was made from: the board is kicad6_old/hellen1-72.kicad_pcb and its schematic hellen72_NB2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hellen1-72 design in my own project?
Its repository states no licence, so its author keeps all rights: ask rusefi before reusing the design.