Hellen121vag
About the Hellen121vag PCB
Hellen121vag is an open source PCB design by rusefi, published on GitHub. It is a 4-layer board measuring 164 × 118 mm, with 121 components from 48 distinct parts.
Other key parts include the L6205PD, LPS25HB, MCP6002-XSN, TLS115_SOIC and TLS115_SON. By type, the board carries 41 connectors, 21 resistors, 19 capacitors, 14 diodes, 11 modules and 5 ICs.
From the project
A member of Hellen ECU family for rusEFI firmware.
A member of Hellen ECU family for rusEFI firmware.
2025 status: older, single-side assembly revisions are known to function OK but a full refresh is in order:
need to use better ETB driver need to use more reasonable injector drivers * etc?
Main components on the Hellen121vag
Hellen121vag bill of materials (BOM)
121 components, 48 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | L6205PD | SO20POWER | U1 |
| 1 | LPS25HB | ST_HLGA-10_2.5x2.5mm_P0.6mm_LayoutBorder3x2y | U2 |
| 1 | MCP6002-XSN MCP6002-xSN | SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | TLS115_SOIC | PG-DSO-8-43_VIA | U4 |
| 1 | TLS115_SON | HVSON-8-1EP_3x3mm_P0.65mm_EP1.6x2.4mm | U5 |
| 2 | Module-can-0.1 | can | M1, M10 |
| 1 | Module-power5-0.2 | power5 | M2 |
| 1 | Module-mcu-0.7 | mcu | M3 |
| 1 | Module-input-0.1 | input | M4 |
| 1 | Module-knock-0.1 | knock | M5 |
| 1 | Module-output-0.3 | output | M6 |
| 1 | Module-ign8-0.2 | ign8 | M7 |
| 1 | Module-power12-0.2 | power12 | M8 |
| 1 | Module-wbo-0.3 | wbo | M9 |
| 1 | Module-vr-discrete-0.1 | vr-discrete | M11 |
| 1 | C2682228 USB_B_Mini | USB-MINI-B-VERTICAL | J1 |
| 1 | CONN_01X08 Conn_01x08 | PinHeader_1x08_P2.54mm_Vertical | J7 |
| 1 | CONN_01X06 Conn_01x06 | PinHeader_1x06_P2.54mm_Vertical | J8 |
| 1 | C165947 AudioJack_THR | Jack_3.5mm_PJ-3250-5A | J10 |
| 1 | 368255-2 | 368255-2 | P1 |
Show 28 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 36 | Pad | PAD-TH | P2, P3, P4, P5, P6, P7, P8, P9 +28 |
| 1 | BATTERY_CR2032 | BatteryHolder_Keystone_1060_1x2032 | BT1 |
| 1 | Fuse-Pad-Pad | PAD-1206-PAD | F1 |
| 1 | C182446 Fuse-Pad-Pad | PAD-1206-PAD | F2 |
| 4 | PROTO_AREA | PROTO_AREA | G1, G2, G3, G5 |
| 1 | DISCLAIMER | Off_Road_Disclaimer | G4 |
| 2 | C115357 Button_SPST | SMD-2_2.9x3.9x1.7 | S1, S2 |
| 5 | 1N4148WS | SOD-323 | D1, D2, D3, D5, D9 |
| 4 | LED-GREEN-0805 | LED-0805 | D4, D6, D7, D8 |
| 5 | B5819W | D_SOD-123 | D10, D11, D12, D13, D14 |
| 5 | 100N 100n | C0603 | C1, C2, C6, C15, C16 |
| 1 | 220N 220n | C0603 | C3 |
| 1 | 10N 10n | C0603 | C4 |
| 1 | 5.6N 5.6n | C0603 | C5 |
| 8 | 10U 10u | C_0805_2012Metric | C7, C8, C9, C10, C11, C12, C13, C14 |
| 1 | 10U 10u | C0603 | C17 |
| 2 | 1u | C0603 | C18, C19 |
| 1 | 100 | R0603 | R1 |
| 7 | C17477 Jumper-Pad-Pad | PAD-0805-PAD | R2, R4, R9, R10, R11, R12, R13 |
| 2 | Jumper-Pad-Pad | PAD-0805-PAD | R3, R8 |
| 1 | 100K 100k | R0603 | R5 |
| 2 | 2.7K 2.7k | R0603 | R6, R7 |
| 2 | 5.1K 5.1k | R0603 | R16, R17 |
| 2 | 4.7K 4.7k | R0603 | R18, R19 |
| 1 | 1.6K 1.6k | R0603 | R20 |
| 1 | 750 | R0603 | R21 |
| 1 | 10K 10k | R0603 | R22 |
| 1 | 0 | R0603 | R23 |
Hellen121vag design files
The KiCad project lives in the rusefi/hellen121vag repository on GitHub; these links point at the commit this page was built from.
Hellen121vag: common questions
How big is the Hellen121vag PCB?
The Hellen121vag measures 164 × 118 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Hellen121vag?
121 components, from 48 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 Hellen121vag design files?
From the rusefi/hellen121vag 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 Hellen121vag 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.