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Hellen72 NB2

rusefi·hellen-miata-NB2

Hellen72 NB2 PCB layout, top view — open source board by rusefi

About the Hellen72 NB2 PCB

Hellen72 NB2 is an open source PCB design by rusefi, published on GitHub. It is a 2-layer board measuring 154 × 159 mm, with 175 components from 59 distinct parts.

Other key parts include the LIS2DW12TR, MPX4_MAP, MCP6002-XSN, LPS22HBTR and L6205PD. By type, the board carries 47 resistors, 35 connectors, 35 diodes, 21 capacitors, 13 modules and 6 fuses.

From the project

a rusEFI board with a 72 pin connector. Works for a Mazda Miata NB2 or any generic 8 cylinder vehicle :)

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

M4 x 10mm will be good for NB external case and internal board to case for both NA and NB.

Main components on the Hellen72 NB2

LIS2DW12TRMPX4_MAPMCP6002-XSNLPS22HBTRL6205PD

Hellen72 NB2 bill of materials (BOM)

175 components, 59 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
LIS2DW12TR
U1
1
MPX4_MAP
U2
1
MCP6002-XSN
MCP6002-xSN
U3
1
LPS22HBTR
LPS25HB
U4
1
L6205PD
U5
1
Module-input-0.1
M1
1
Module-ign8-0.2
M2
1
Module-mcu-0.6
M3
1
Module-sd-0.1
M4
1
Module-output-0.3
M5
1
Module-dinput4-0.1
M6
1
Module-stlink-0.1
M7
2
Module-can-0.1
M8, M13
1
Module-knock-0.1
M9
1
Module-power12-0.2
M10
1
Module-power5-0.2
M11
1
Module-wbo-0.3
M12
2
AUIPS2041LTR
Q1, Q2
1
C13453
USB_B_Mini
J1
1
CONN_01X05_MALE
Conn_01x05_Male
J2
Show 39 more
QtyPartRefs
1
C240832
MiniFit
J3
1
CONN_02X12_ODD_EVEN
Conn_02x12_Odd_Even
J4
1
C46392
USB_B
J5
1
AUDIOJACK3_SWITCHTR
AudioJack3_SwitchTR
J25
1
CONN_01X06
Conn_01x06
J27
27
Pad
P1, P3, P4, P5, P6, P7, P8, P9 +19
1
8-5353015-1
P2
1
BATTERY_CR2032
BT1
6
FUSE-5A-1206
Fuse-Pad-Pad
F1, F2, F3, F4, F5, F6
1
DISCLAIMER
G2
7
PROTO_AREA
G4, G5, G6, G7, G9, G11, G12
2
C115357
Button_SPST
S1, S2
4
LED-GREEN-0805
D1, D2, D10, D11
4
LED-BLUE-0603
D3, D4, D25, D28
14
1N4148WS
D5, D12, D13, D14, D15, D20, D21, D22 +6
4
LED-RED-0603
D6, D7, D8, D9
6
LED-WHITE-0603
D16, D17, D18, D19, D26, D27
3
B5819W
D31, D35, D36
7
100N
100n
C1, C2, C3, C5, C6, C7, C21
1
10U
10u
C4
1
6.8N
6.8n
C8
10
10U
10u
C9, C11, C12, C13, C15, C16, C17, C18 +2
1
10N
10n
C10
1
220N
220n
C14
7
Jumper-Pad-Pad
R1, R5, R7, R10, R11, R33, R37
2
5.1K
5.1k
R2, R55
1
4.7K
4.7k
R3
1
1k
R4
2
4.7K
4.7k
R6, R16
21
C17477
Jumper-Pad-Pad
R8, R9, R12, R17, R18, R24, R25, R26 +13
1
1.6K
1.6k
R13
3
0
R14, R15, R23
3
10K
10k
R19, R28, R29
1
20K
20k
R20
1
100
R21
1
680K
680k
R22
1
100K
100k
R35
1
470
R36
1
750
R50

Hellen72 NB2 design files

The KiCad project lives in the rusefi/hellen-miata-NB2 repository on GitHub; these links point at the commit this page was built from.

Hellen72 NB2: common questions

How big is the Hellen72 NB2 PCB?

The Hellen72 NB2 measures 154 × 159 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Hellen72 NB2?

175 components, from 59 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 Hellen72 NB2 design files?

From the rusefi/hellen-miata-NB2 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 Hellen72 NB2 design in my own project?

The repository has no license, so all rights stay with rusefi. Use it as a reference, and ask the author before reusing the design.

More boards in hellen-miata-NB2