# hw_microRusEfi

**Repository Path**: chenfu8804/hw_microRusEfi

## Basic Information

- **Project Name**: hw_microRusEfi
- **Description**: microRusEfi board for rusEfi ECU
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 2
- **Created**: 2025-09-17
- **Last Updated**: 2025-09-17

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# microRusEfi

microRusEfi is a small & cheap engine management system board designed for 1, 2, 3 and 4 cylinder applications.
microRusEfi uses a waterproof connector and it's aluminum enclose could be sealed. 

microRusEfi hardware runs [rusEfi firmware](https://github.com/rusefi/rusefi).

microRusEfi supports dual Hall shaft position sensor input or 1xHall + 1xVR shaft position sensor input (A few 
resistors need to replaced on the PCB in order to switch from one setup to another)

Available on eBay https://www.ebay.com/itm/333517397424

# Capabilities
* Primary VR or Hall input (configurable with few resistor changes)
* Secondary Hall input
* Four analog temperate inputs
* 10 analog inputs
* Four high-Z injector outputs
* Two high-current low side outputs for IAC/VVT/other solenoids
* Dedicated main relay control output 
* TBD low-current low side outputs for relays or warning lights 
* Six high-side logic level outputs (x4 5v + x2 5v or 12v)
* H-bridge for DC motor electronic throttle body
* CAN connectivity on the plug
* USB connectivity on the plug 
* (TODO: stepper IAC support)



# Documentation

[microRusEfi kit instructions](https://github.com/rusefi/rusefi_documentation/wiki/Hardware_microRusEfi_kit_instructions)

[microRusEfi documentation wiki](https://github.com/rusefi/rusefi_documentation/wiki/Hardware_microRusEfi)


[microRusEfi forum thread](https://rusefi.com/forum/viewtopic.php?f=4&t=1538)



![img](microRusEfi.jpg)

If you download complete repo do not forget to download libraries. If you git clone be sure to also

`git submodule update --init`

Do you like what you see here? Maybe https://www.patreon.com/rusefi

## BOM highlights

stm32f767

[TLE8888-2QK](https://www.infineon.com/dgdl/Infineon-Infineon-TLE8888QK-DS-v01_02-EN.pdf?fileId=5546d4624f205c9a014f402ebd1c6095)

[48 pin connector](https://github.com/rusefi/rusefi_documentation/wiki/Hardware_microRusEfi_connectors)


iBom https://rusefi.com/docs/ibom/microRusEfi_latest.html

## Case

Model CKKB48-1-A (Weigh 200g)

[Case 3D Model](https://cad.onshape.com/documents/cce953328a88b521d5673ac5/w/e2d3a78cfb432482f5aac9ea/e/2eb39a31ab72390c6384f68c)

Cover bolts M3.5x0.6

PCB bolts M3 0.5mm thread, L=7.5mm

## Gerbers

[Gerbers and pictures of fabricated boards](gerbers)


## ST-LINK

Unfortunately eBay has a few different version of cheap ST-LINK V2 devices with different pinout. Here is the pinout rusEfi is compatible with:

![img](compatible_ST-LINK_V2.jpg)