Open-source EUC motherboard

[rswarner]

Any recent progress on this controller board?

[rswarner]

Sorry. I couldn’t see the whole thread until my account was verified. I see the repositories. Thanks to everyone working on this project!

[electric_vehicle_lover]

May help on this project!!

We are developing a generic motor controller (EasyDIY ESC: https://github.com/EBiCS/EasyDIY-ESC), that has room to have an extra board to support custom electronics and so be tailored for custom applications as EBikes and EScooters as Xiaomi M365.
This controller is also to be easy to build as DIY or can mostly be assembled on services as JLCPCB, as also to be easy to repair. This controller uses the famous Bluepill with the STM32F103 microcontroller.
The idea is that we can quick reuse this motor controllers between our EV devices, since we own different EBikes with different motors, as also EScooters. In past I did own an EUC.

We also have a FOC motor controller firmware (https://github.com/EBiCS/EBiCS_motor_FOC), that was developed to be included as a module on another project. This firmware has a an example project that serves for testing, drives a motor in both direction using a throttle to both accelerate or brake.

Pictures of the last prototype (yet not fully assembled). Is this example, the perforated board is the custom electronics expansion board (but could be a professional board instead), for an EUC, the IMU could be added as also a Bluetooth module:

 

And videos showing the firmware driving different motors, while running on different hardware motor controllers, all of them using the STM32F103:

 

See the example folder. In that example, a throttle is used to define the motor target current. Here a video showing this example driving a Xiaomi EScooter M365 motor:

 

Here a video showing this example driving a TSDZ2 Ebike mid drive motor:

 

 

[electric_vehicle_lover]

We also developed our own EasyDIY OpenSource display (https://opensourceebike.github.io/ - with Bluetooth and ANT wireless communications), to be quick and fast adapted to our different EVs, with a firmware that is also quick to adapt. But maybe a display is of no big interest for this project of an EUC.

Edited April 5, 2022 by electric_vehicle_lover

[Firebat45]

On 4/5/2022 at 5:51 AM, electric_vehicle_lover said:

But maybe a display is of no big interest for this project of an EUC.

 

Personally I think a "Companion Device" for an EUC would be a great idea.  Design it to be wrist or back-of-hand mounted, with some buttons (on a ribbon cable so positionable?) for headlights, turn signals, horn, etc and a display for speed, battery, etc.  Then have a little dock on the EUC itself so you can store+charge it when not riding.

Edited April 21, 2022 by Firebat45