HardLabs

UnoShield

MBI-Ignitions·MBI_Ignition_Systems·Open Source CDIs/UnoShield/unoShield.kicad_pcb

UnoShield PCB layout, top view — open source AVR/Arduino board by MBI-Ignitions
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About the UnoShield PCB

UnoShield is an open source AVR/Arduino PCB design by MBI-Ignitions, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 68.6 × 53.3 mm, with 55 components from 38 distinct parts.

Its main chip is the ARDUINO_UNO_R2_SHIELD, from the AVR/Arduino family. Other key parts include the LNK3206D. By type, the board carries 16 capacitors, 15 diodes, 14 resistors, 3 connectors, 1 IC and 1 module.

From the project

Repository for uploading ignition system information

Some designs also have themistors or thermal resistors. These are to change the timing depending the ambient temperature.

UnoShield, from the project README
From the project README

Main components on the UnoShield

LNK3206DARDUINO_UNO_R2_SHIELD

UnoShield bill of materials (BOM)

55 components, 38 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
LNK3206D
U2
1
ARDUINO_UNO_R2_SHIELD
Arduino_Uno_R2_Shield
A2
1
TIC106
Q3
1
KILL
J3
1
MAG
J4
1
CDI
J5
1
100K
100k
RV1
1
SW_Push
SW1
1
VREF
TP1
5
1N4007
D1, D4, D6, D10, D11
1
SA5.0A-TP
D2
2
1N5819
D3, D12
3
LED
D5, D7, D8
1
1N4937
D9
3
1N5231B
D13, D14, D15
1
3300UH
3300uH
L1
2
10U
10u
C1, C22
2
1u
C2, C3
2
u1
C4, C6
3
10N
10n
C5, C8, C30
Show 18 more
QtyPartRefs
1
2.2u 400v
C10
1
1u 35v
C11
1
10u 16v
C15
1
100u 10v
C18
1
22p 300v
C32
1
1n 300v
C33
1
1u 400v
C35
1
470
R4
3
220
R5, R6, R7
1
2k 1%
R8
1
2.94k 1%
R10
1
680
R12
1
100
R18
1
10K
10k
R21
1
476.4K
476.4k
R23
1
3.6K
3.6k
R24
2
1k
R25, R28
1
27
R27

UnoShield design files

The KiCad project lives in the MBI-Ignitions/MBI_Ignition_Systems repository on GitHub; these links point at the commit this page was built from.

UnoShield: common questions

What microcontroller does the UnoShield use?

The UnoShield is built around the ARDUINO_UNO_R2_SHIELD, from the AVR/Arduino family.

How big is the UnoShield PCB?

The UnoShield measures 68.6 × 53.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the UnoShield?

55 components, from 38 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 UnoShield design files?

From the MBI-Ignitions/MBI_Ignition_Systems 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 UnoShield design in my own project?

Yes, under the terms of its GPL-3.0 license, which MBI-Ignitions chose for the repository.

Can I test firmware for the UnoShield without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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