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4 layers15.2 × 9.8 mmHellen1-vr max9924, the printed circuit board in 3D

Hellen1-vr max9924

andreika-git/hellen-one38

Hellen-One Hardware Platform for rusEFI Engine Management System

Size
15.2 × 9.8 mm
Copper layers
4
Thickness
1.6 mm
Parts
13
Nets
14
Pads
58
Tracks, vias
57, 23
Pours
3
Routed
Yes
KiCad
KiCad 7 (file 20221018)
Created
14 Feb 2021
Updated
30 Oct 2026

Overview

Hellen1-vr max9924 is an open-source printed circuit board by andreika-git, from the andreika-git/hellen-one repository on GitHub. It is a 4-layer board of 15.2 × 9.8 mm with 13 parts on 14 nets, routed with 57 tracks and 23 vias.

It is built around the MAX9924UAUB+. Its parts include 7 resistors, 3 capacitors, 1 IC and 1 diode.

Main components

1

README

readme.md

TL,DR:

hellen-one is a toolset to produce custom PCBs by merging gerber files of known proven functional modules into trivial frame PCB with mostly just the main vehicle connector. Gerber export and gerber merging happens in the cloud, i.e. on the github server.

Step 1: fork https://github.com/rusefi/hellen-example/ repo to get github actions and meta files learn about forking

Step 2: make sure github actions are enabled/enable github actions on your fork

Step 3: replace xxx and yyy in revision.txt with name of your board. By the way we expect kicad files to be placed in the root folder of the repository.

Step 4: create youboard.kicad_pcb from proven modules using KiCAD

Step 5: push into github to trigger hellen-one gerber expert and gerber merge (that's where the hellen magic happens! for instance gerber export is taken care by export.sh script which github action would invoke automatically. Just watch for the yellow circle to turn into a green checkmark.)

Step 6: (sorry rotation only by factor of 90 degrees at this point)

Step 7: order your using fabrication files from 'boards' folder!

Please see how some of the open source boards are done and follow the pattern:

Open Source Boards

This repository contains all scripts and data to create Hellen One boards for rusEFI!

See also https://github.com/rusefi/rusefi/wiki/Hellen-One-Platform

Hellen One is a DIY PnP ECU board construction toolset.

Do you have a car with a rare or non-standard ECU connector pinout? Do you want a custom DIY ECU but don't want to design it from scratch?

Then Hellen One is for you!

Please see Hellen One Wiki for more info:

https://github.com/andreika-git/hellen-one/wiki

FAQ

Q: I do not have any files inside hellen-one folder on my PC

A: That's a problem, you have not cloned submodules. See https://stackoverflow.com/questions/3796927/how-do-i-git-clone-a-repo-including-its-submodules

Parts

13
QtyValueFootprintReferences
44.7khellen-one-common:R1206R771, R772, R773, R774
210khellen-one-common:R0603R776, R777
1100nhellen-one-common:C0603C772
11nhellen-one-common:C0603C771
122uhellen-one-common:C0603C773
1DNPhellen-one-common:R0603R775
1LED-GREEN-0603LED_SMD:LED_0603_1608MetricD771
1MAX9924UAUB+Package_SO:MSOP-10_3x3mm_P0.5mmU771
1Module-vr-max9924-0.1hellen-one-vr-max9924-0.1:vr-max9924M771

Questions

How big is the Hellen1-vr max9924 PCB?

It measures 15.2 × 9.8 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Hellen1-vr max9924 use?

13 parts, built around the MAX9924UAUB+. 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-vr max9924 KiCad files?

From the andreika-git/hellen-one repository on GitHub, at the commit this page was made from: the board is kicad/modules/hellen1-vr-max9924/hellen1-vr-max9924.kicad_pcb and its schematic kicad/modules/hellen1-mcz33810/hellen1-mcz33810.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Hellen1-vr max9924 design in my own project?

Its repository states no licence, so its author keeps all rights: ask andreika-git before reusing the design.

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