AutoDetect Pins
if your board is not listed in the Wiki and you really want to use it, please follow the step below to use autodetect to add support for new layout
To be able to use the autodetect feature you will need the below parts
- A constant current power supply set to 24V2A
- All the electronics from the hoverboard you would want to use except the battery
- A SWD programmer
- A ESP32
- A PC with serial terminal software
Only GD32f series is supported by autodetect, if you have new mcu please start a new issue with name of the MCU and pictures
SWD connector is typically located near the mcu with 4 pins which is 3V3 GND SWDIO SWCLK (order will vary), some contain a 5th pin NSRST.
To use the autodetect, you need to establish connection to the motherboard controller, so you will need to find at least one serial port, all known gen2.x boards use serial0(tx=pa2 rx=pa3) for comms masterslave (this is usually the 4 pin cable between the master and slave boards), as it is very easily accessible we will use it for connecting our ESP to.
The VCC on comms masterslave connector is 12/15v, do not connect it to the ESP! You will fry your ESP.
Download the prebuilt binary
- hoverboard autodetect GD32F130 tx=PA2, rx=PA3
- hoverboard autodetect GD32F130 tx=PB6, rx=PB7
- hoverboard autodetect STM32F103/GD32F103 tx=PB6, rx=PB7
Installation method please see SWD flashing
It is suggested to just use your esp32 for autodetect purpose, although not necessary, it will convert the serial voltage to 3.3v for you
The autodetect packet is sent in plain acsii so if you wanted you can use a USB to serial adapter with baud 19200
Flash this firmware on esp, you need to build it your self with arduino ide. Make sure to update your lines on line 22 of the autodetect.ino file to reflect your esp.
` oSerialHover.begin(19200, SERIAL_8N1, 16, 17); '
The wiring diagram is like one in remote uartbus but with only one board and no diodes is needed.
Connect all the led and motor wires like it original is to the master board, do not connect the bluetooth module, and connect the esp to masterslave cable like mentioned above, connect the battery connector to the Constant Current power supply, and bridge the power button with a piece of wire, all the leds should light up, if not the board is likely damaged.
Follow the guide in the serial terminal to complete all the steps, if the board automatically switches off please start over again, please skip the current DC test unless the motor is mounted to original housing.
Copy all the pin configuration after the steps are finished.