AboutDisclaimer: This is a hobby project, even if it may be looking some kind of professional!
In addition to the often used Kunteng controllers, an open firmware is under development. The KT-LCD3/5 display is currently implemented in the main branch.
In a "side branch" the kingmeter J-LCD is implemented, which also allows the use of the Lishui Bluetooth module and the corresponding Forerider app. This branch offers basic functionalities, but is not being developed further at the moment.
Various driving modes are supported, including the popular "torque simulation" mode and control via a torque sensor.
The documentation on the project can be found here: Bitbucket Homepage
This tutorial concentrates on the procedure for installing the required software as well as parameterizing and flashing the firmware under Windows.
The corresponding thread in the german Pedelecforum can be found here
A graphical tool is available, which allows the use of the firmware even for less experienced Windows users without programming knowledge.
Attention! The project is in development. In any case, use a quick fuse in the power supply to minimize the risk of destroying the controller, battery or motor!