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ADD: README

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Niklas Fauth 2018-04-09 22:08:26 +02:00
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README.md
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# New Firmware! Now with actual current sensing!
This firmware is much better than the old one. tested up to 40A / 60V, no dead board so far :)
## Hoverboard-Board-Hack
## hoverboard-firmware-hack
This repo contains open source firmware for generic Hoverboard Mainboards.
The firmware you can find here allows you to use your Hoverboard Hardware (like the Mainboard, Motors and Battery) for cool projects like driving armchairs, person-tracking transportation robots and every other application you can imagine that requires controlling the Motors.
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---
#### Hardware
![otter](https://raw.githubusercontent.com/NiklasFauth/Hoverboard-Board-Hack/master/schema.jpg)
![otter](https://raw.githubusercontent.com/NiklasFauth/Hoverboard-Board-Hack/master/pinout.png)
The original Hardware supports two 4-pin cables that originally were connected to the two sensor boards. They break out GND, 12/15V and USART2&3 of the Hoverboard mainboard.
Both USART2 & 3 can be used for UART and I2C, PA2&3 can be used as 12bit ADCs.
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Make sure you hold the powerbutton or connect a jumper to the power button pins while flashing the firmware, as the STM might release the power latch and switches itself off during flashing.
To flash the STM32, use the ST-Flash utility (https://github.com/texane/stlink).
If you never flashed your mainboard before, the STM is probably locked. To unlock the flash, use the following OpenOCD command:
```
openocd -f interface/stlink-v2.cfg -f target/stm32f1x.cfg -c init -c "stm32f1x unlock 0"
```
Then you can simply flash the firmware:
```
st-flash write build/hoverboard.bin 0x8000000
```
---
#### Troubleshooting
First, check that power is connected and voltage is > 36V.
If the board draws more than 100mA in idle, it's probably broken.
If the motors do something, but don't rotate smooth and quietly, try to use an alternative phase mapping. Usually, color-correct mapping (blue to blue, green to green, yellow to yellow) works fine. However, some hoverboards have a different layout then others, and this might be the reason your motor isn't spinning.
---
#### Examples
Have a looh at the config.h in the Inc directory. That's where you configure to firmware to match your project.
Have a look at the config.h in the Inc directory. That's where you configure to firmware to match your project.
Currently supported: Wii Nunchuck, analog potentiometer and PPM signal from a RC remote.
If you need additional features like a boost button, have a look at the while(1) loop in the main.c