BMW E30 VFL SI Board V3
About the BMW E30 VFL SI Board V3
BMW E30 VFL SI Board V3 is an open source PCB design by FabianGmeiner, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 300 × 53 mm, with 91 components from 66 distinct parts.
Other key parts include the ITT SAF MCU and LM2901N. By type, the board carries 48 resistors, 14 capacitors, 13 diodes, 7 transistors, 3 connectors and 2 ICs.
From the project
Reverse engineering and improving the BMW E30 service indicator board
I'm currently working on a little project for all the early model E30 drivers with SI board trouble from leaky batteries or mechanical damage.
I am reverse engineering the early model SI board, in my case the VDO version (VDO and motometer are interchangeable)
This initial version is a 1:1 copy of the original design. The main microcontroller, the crystal oscillator and the large pin header need to be desoldered and taken over to the new board, but all other components are readily available and stocked parts.
Main components on the BMW E30 VFL SI Board V3
BMW E30 VFL SI Board V3 bill of materials (BOM)
91 components, 66 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ITT SAF MCU ITT | DIP-40_W15.24mm | U1 |
| 1 | LM2901N LM2901 Texas Instruments | DIP-14_W7.62mm | U2 |
| 2 | BC547C Diotec, onsemi | TO-92_Inline_Wide | Q1, Q4 |
| 4 | BC337-25 onsemi | TO-92_Inline_Wide | Q3, Q5, Q6, Q7 |
| 1 | BC327-16 onsemi | TO-92_Inline_Wide | Q8 |
| 1 | Crystal | Crystal_C38-LF_D3.0mm_L8.0mm_Horizontal | Y1 |
| 1 | Conn_01x13_Pin BMW | PinHeader_1x13_P2.54mm_Vertical | J1 |
| 1 | Conn_01x19_Pin Molex 22-28-4130, Würth 61301311121 | E30_SI_Connector_19Pin_P3.5 | J2 |
| 1 | BAT_EN | PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | 54 Keystone 54 + Varta Ni-Cd 500 RST, 780mAh | Keystone_54_CR123 | BT1 |
| 1 | 54 Keystone 54 - Varta Ni-Cd 500 RST, 780mAh | Keystone_54_CR123 | BT2 |
| 1 | SR7-9V-200-1C CUI | SR79V2001C | K1 |
| 3 | 1N4148 Vishay, onsemi | D_DO-35_SOD27_P10.16mm_Horizontal | D1, D3, D11 |
| 1 | BZX 55C 6V2 Vishay, onsemi, Taiwan Semiconductor | D_DO-35_SOD27_P10.16mm_Horizontal | D2 |
| 1 | BZX 55C 5V1 Vishay, onsemi, Taiwan Semiconductor | D_DO-35_SOD27_P10.16mm_Horizontal | D4 |
| 1 | 1N4148 Vishay, onsemi | D_DO-35_SOD27_P7.62mm_Horizontal | D5 |
| 1 | BAV-21 BAV21 Vishay, onsemi, Taiwan Semiconductor, Diotec | D_DO-35_SOD27_P10.16mm_Horizontal | D6 |
| 1 | BAV-21 BAV21 Vishay, onsemi, Taiwan Semiconductor, Diotec | D_DO-35_SOD27_P12.70mm_Horizontal | D7 |
| 3 | 1N4005G onsemi, Teiwan Semiconductor | D_DO-41_SOD81_P12.70mm_Horizontal | D8, D9, D10 |
| 1 | BAT46 | D_DO-35_SOD27_P7.62mm_Horizontal | D12 |
Show 46 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LED_G | LED_D3.0mm | D13 |
| 5 | 100n KEMET, Vishay, AVX | C_Rect_L7.0mm_W2.5mm_P5.00mm | C1, C3, C4, C7, C8 |
| 1 | 470n Vishay | C_Rect_L7.2mm_W5.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C2 |
| 1 | 100n Vishay | C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C5 |
| 2 | 4n7 Murata, KEMET | C_Disc_D8.0mm_W2.5mm_P5.00mm | C6, C12 |
| 2 | 100u Vishay, Cornell | CP_Axial_L16.0mm_D8.5mm_P22.5mm_Horizontal | C9, C10 |
| 1 | 100u Vishay | CP_Axial_L18.0mm_D8.5mm_P22.5mm_Horizontal | C11 |
| 2 | 1n | C_Rect_L7.0mm_W2.5mm_P5.00mm | C13, C14 |
| 1 | 825R | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 1k65 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 3k32 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
| 1 | 6k65 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4 |
| 1 | 13k3 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 1 | 7k15 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 1 | 3k57 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7 |
| 1 | 1k78 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8 |
| 1 | 887R | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R9 |
| 1 | 64k9 | R_Axial_DIN0207_L6.3mm_D2.5mm_P12.70mm_Horizontal | R10 |
| 1 | 1k00 | R_Axial_DIN0207_L6.3mm_D2.5mm_P17.78mm_Horizontal | R11 |
| 1 | 35k7 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R12 |
| 2 | 470k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R13, R16 |
| 1 | 16k2 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R14 |
| 1 | 43k2 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R15 |
| 1 | 4k75 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R17 |
| 1 | 750R | R_Axial_DIN0207_L6.3mm_D2.5mm_P12.70mm_Horizontal | R18 |
| 2 | 51k0 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R19, R40 |
| 1 | 24k9 | R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal | R20 |
| 1 | 100R | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R21 |
| 1 | 56k2 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R22 |
| 1 | 12k1 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R23 |
| 1 | 2k70 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R24 |
| 1 | 10k0 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R25 |
| 1 | 16k0 | R_Axial_DIN0207_L6.3mm_D2.5mm_P20.32mm_Horizontal | R26 |
| 1 | 75R0 | R_Axial_DIN0207_L6.3mm_D2.5mm_P12.70mm_Horizontal | R27 |
| 1 | 16k0 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R28 |
| 1 | 5k60 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R29 |
| 6 | 160R | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R30, R31, R32, R33, R34, R35 |
| 3 | 160R | R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal | R36, R37, R38 |
| 1 | 1k00 | R_Axial_DIN0207_L6.3mm_D2.5mm_P12.70mm_Horizontal | R39 |
| 1 | 12R0 | R_Axial_DIN0414_L11.9mm_D4.5mm_P22.86mm_Horizontal | R41 |
| 1 | 75R0 | R_Axial_DIN0309_L9.0mm_D3.2mm_P15.24mm_Horizontal | R42 |
| 1 | 1k30 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R43 |
| 1 | 390R | R_Axial_DIN0309_L9.0mm_D3.2mm_P15.24mm_Horizontal | R44 |
| 1 | 4k70 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R45 |
| 1 | 10R | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R46 |
| 2 | 470R | R_Axial_DIN0309_L9.0mm_D3.2mm_P15.24mm_Horizontal | R47, R48 |
BMW E30 VFL SI Board V3 design files
The KiCad project lives in the FabianGmeiner/BMW_E30_SI_Board repository on GitHub; these links point at the commit this page was built from.
BMW E30 VFL SI Board V3: common questions
How big is the BMW E30 VFL SI Board V3?
The BMW E30 VFL SI Board V3 measures 300 × 53 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the BMW E30 VFL SI Board V3?
91 components, from 66 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 BMW E30 VFL SI Board V3 design files?
From the FabianGmeiner/BMW_E30_SI_Board 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 BMW E30 VFL SI Board V3 design in my own project?
Yes, under the terms of its GPL-3.0 license, which FabianGmeiner chose for the repository.
More boards in BMW_E30_SI_Board
Earlier revisions in the repo: BMW E30 VFL SI Board V2, BMW E30 VFL SI Board