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EFeru / hoverboard-firmware-hack-FOC

With Field Oriented Control (FOC)
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Velcocity Randomly jumps using UART variant #454

Open mandrievich opened 6 months ago

mandrievich commented 6 months ago

Variant

USART

Control type

None

Control mode

None

Description

Hello,

I'm using the latest firmware version, everything works fine, but sometimes (it can happen once every 10 minutes or once every 30 minutes) the wheels start spinning abruptly with a noise for a very short period of time, it looks like a bang and then abruptly disappears. This happens when zero signal is applied and during normal operation.

I found old question #120, but I don't think that's the issue as I'm using the latest firmware version.

Can you please help me to figure out the problem?

Candas1 commented 6 months ago

Hi,

In the thread you shared, he ends up using different hardware. You have not shared any details about your hardware.

I hope you are using hardware serial.

mandrievich commented 6 months ago

Hi, I'm using USB to TTL converter as hardware connected to Hoverboard.

I tried to use different USB to TTL but the result the same.

Also i tried to use Arduino nano with sample shared (https://github.com/EFeru/hoverboard-firmware-hack-FOC/tree/main/Arduino/hoverserial) to rule out the possibility that the USB to TTL converter is broken.

With Arduino Nano the result the same.

Candas1 commented 6 months ago

Are you sure it's not this? https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Battery#zzz-inactivity-timeout---power-saving

mandrievich commented 6 months ago

I think this is not the case because i sat the value INACTIVITY_TIMEOUT to 30 and then to 900, because in my case I don't need INACTIVITY_TIMEOUT at all.

Candas1 commented 6 months ago

OK then I don't know

geofrancis commented 2 weeks ago

I am also getting this issue on the latest firmware, i have tried the wheels dont rotate smoothly, they abruptly stop with a bang every few seconds, works fine with pwm and ibus.

Candas1 commented 2 weeks ago

I am also getting this issue on the latest firmware, i have tried the wheels dont rotate smoothly, they abruptly stop with a bang every few seconds, works fine with pwm and ibus.

Ibus is also using usart, just a different protocol. Then the problem is with the device sending the commands.

Candas1 commented 2 weeks ago

FYI the wiki says you should reduce the baud rate if using software serial on arduino

https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Variant-USART#toolbox-troubleshooting

geofrancis commented 2 weeks ago

im using a RP-2040. il try with slower serial.

Candas1 commented 2 weeks ago

im using a RP-2040. il try with slower serial.

Are you using software serial ?

geofrancis commented 2 weeks ago

no PIO https://arduino-pico.readthedocs.io/en/latest/piouart.html, I will try with a hardware serial port.

geofrancis commented 1 week ago

I just tried it with a 328 nano board, as soon as its set to under 100rpm it starts banging and stuttering.

some more testing shows its because its off the ground in spd mode and overshooting its position and trying to reverse it again. once its on the ground with load its ok.

geofrancis commented 1 week ago

the issue with the RP-2040 was the PIO serial definitions are reversed. so when i changed it from softsserial to PIO it swapped the TX and RX.