An Electric Scooter Community on a Mission to Stamp out Transportation Mediocrity.
I didn't have anything connected except the STLINK.
servacy wrote: ↑Thu Sep 09, 2021 1:44 pmmayaku wrote: ↑Fri Sep 03, 2021 4:23 pmservacy wrote: ↑Tue Aug 31, 2021 6:26 pm
I thought that could be the problem, but is it possible, considering the fact that this was not 12V led stripe or something, but small led chain originally powered by 2 AA batteries (it makes 3V right?). Other thing is that I had the spare controller from other Lime and after successful flashing it also gives red "x".
You want to know why your scooter "dies"? In your other post, you mention, in order for you to fit your black box inside the internals (near the motor controller), you had to move the motor down and fit it with one screw. The motor controller needs to be fitted with all three screws in the original location. The mosfets are located nearest to the screws because the external frame acts like a giant heatsink to the controller. Since you moved the original location, the motor controller is over heating and is probably turning itself off to self-protect itself. You should move it back to the original position ASAP (3 screws) as the the different spikes in heat will degrade the life of the motor controller.
Does the red LED on the controller starts flashing when you switch on the scooter?
If it doesn't means you damaged a voltage regulator on the controller. Flashing new firmware is not a problem because it is powered from the ST-Link
To check if a MOSFET is damaged you just have to plug the motor into the controller and turn it. If you feel resistance while turning the motor one or more MOSFETs are broken.
Thank you for your help, but, well, it occurred that after leaving the scooter turned off for couple of days everything went back to normal. I have no idea what was wrong. It is great it works now, but this erratic behaviour makes my scooter unreliable. At least it looks good;)
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