This repository provides the PCB files for the VESC2X3Bridge board. It allows an almost plug-and-play installation, with minimal configuration required on both the VESC and Bridge sides.

Community Telegram channel Ninebot Bridges

Demo Video with my Firmware

Also check out this repository which is used to drive the lights on your X3 Series Scooter LightBoard

Additional material needed for the bridge (Spintend Ubox)

Battery voltage to 12V 5A DC DC converter (Power for bridge, display and lights)

1x JST GH 1.25 7pin (Ignition port)

1x JST GH 1.25 6pin (LightBoard data and 5V supply)

1x JST GH 1.25 5pin (Canbus)(If you have 2 Motors you need two) Dont forget to swap the 5V pin with the PWR.ON if running two VESCS

1x JST GH 1.25 4pin (LightBoard 12V supply)

Features & Abilities

A simple overview of everything the VESC2G3Bridge can do.

What Is It?

The VESC2X3Bridge is a project I started at the end of 2025. It aims to integrate the X3 Scooter Series from Ninebot into the world of VESC, an open-source project by Benjamin Vedder. The VESC2G3Bridge is a small computer that sits between your scooter's motor controller (VESC) and its dashboard (G3). Without it, the dashboard and the motor controller don't understand each other — the bridge acts like a translator so they can work together.

What It Does

Shows Your Speed

The device reads how fast the motor is spinning and works out your actual riding speed. It then sends that number to the dashboard so you can see it while you ride.

Shows Battery Level

It checks how much battery you have left and tells the dashboard, so you always know when to charge.

Controls the Lights

Turns on the rear light just like the stock X3 Series.
Flashes the left and right indicators (turn signals) when you signal a turn.
Supports horn activation from the dashboard button (GT3).

Switches Ride Profiles

The scooter can have different power modes (WALK,ECO,NORMAL,SPORT). The bridge listens to the dashboard buttons and tells the VESC which mode to switch to. You can also set it to block the switching of modes when the battery is low, bypassing the dashboards auto apply of a slow profile.

Controls the Throttle and Brake

By running a small script on the VESC, the VESC can directly read the inputs from the dashboard, giving the VESC full control over how you accelerate and slow down.

Updates Itself Over Wi-Fi

The device creates its own Wi-Fi network and you can upload new firmware right from your phone or computer's web browser.

Has a Built-In Settings Page

Connect to its Wi-Fi and open a web page to change settings. Config page

Works With Different Battery Systems

Some scooter battery packs have their own battery management board (BMS). The bridge can read battery info from:

The VESC itself
The Ninebot Original BMS
A JBD (Xiaoxiang) BMS

Supports Two Board Versions

There are two hardware versions of the board (V1.0 and V2.1+). You pick which one you have in the settings page and the device automatically uses the right pins.

Tracks Multiple Motor Controllers

If your scooter has more than one VESC (e.g. dual motors), the bridge reads speed data from all of them and averages the values together for a smooth, accurate speed reading.

Quick Summary Table

Feature	What it means
Designed for Spintend Ubox series	Supports 85V150A, 100V100A, 85V240A, 126V160A, 85V250A
X3 Series Support	Supports G3, ZT3 and GT3*
Speed display	Shows km/h on the dashboard
Battery display	Shows battery % on the dashboard
Turn signals	Flashes left/right lights
Rear light	Controls the back light
Horn	Support for the GT3 horn
Ride profiles	Switches power modes from the dashboard
Low battery lock	Blocks the dashboard profile application when the battery is low
Throttle & brake	VESC reads the throttle and brake directly from the Dashboard
Wi-Fi OTA updates	Update firmware from a browser
Web config page	Change settings from a browser
Multiple BMS support	Works with VESC, Ninebot, or JBD battery boards
Two board versions	Supports V1.0 and V2.1+ hardware
Multi-VESC support	Handles more than one motor controller

*This device was originally developed for the G3

How to create a PCB from the files

Tutorial here

Firmware flashing

The board uses an ESP32-S3-WROOM-1 chip, which has exposed USB D+, D-, and GND pins on the PCB.
Use these pins to connect a USB cable to your computer and flash your firmware.

Flashing Service

I offer a PCB flashing service for those who prefer a ready-to-use board:

You send me your VESC2X3Bridge and i will flash it with the VESC2X3bridge firmware.
Cost: Listed on our shop page
Includes: Lifetime free firmware updates
How it works: Simply order the service, and we will program your PCB with the latest firmware and ship it to you ready to use.

This service is optional

License

This PCB design is released under the CC BY-NC-SA 4.0 License.

What you can do

Share and adapt this design for personal or hobby purposes
Give credit to the original author (Finn Tews)

What you cannot do

Use this design for commercial purposes
Remove or obscure attribution
Re-license derivatives under more restrictive terms