You are here

VESC 75/300 FW Mosfet Temperatures problems

4 posts / 0 new
Last post
tecnico.solarboat
Offline
Last seen: 1 week 1 day ago
VESC Original
Joined: 2018-06-28 14:43
Posts: 17
VESC 75/300 FW Mosfet Temperatures problems

I'm trying to flash a custom firmware on the VESC so that I can have custom CAN messages on the Bus, such as Fault codes.

I have 3 different VESC 75/300 versions. One that I know is a REV_3 and two more that I'm not sure which version they are. The PCB inside the VESC says V1.1 and VESC Tool says Fw: 5.2, HW: 75_300.

With the default FW I have all that MOSFET temperatures, MOS1, MOS2, MOS3 and TEMP_Filtered. But if I flash the VESC with the my custom FW configuring the conf_general.h file with the following settings, I  lose this temperatures and I only have access to the TEMP_Filtered.

Captura de ecrã 2021-06-10, às 11.22.07.png

I have tried to flash this VESC with the option for REV_2 and it works and shows all temperatures but I have not tried to spin motors.

 

frank
Offline
Last seen: 8 hours 53 min ago
VESC BronzeVESC GoldVESC OriginalVESC Silver
Joined: 2016-12-27 20:19
Posts: 433

Look at the bottom of the case, there is a laser edging. R3 has a R3 at the end of the B/N.

R2 has a working internal NRF and should state V1.12 at the end of the B/N

R1 has no built in NRF but a footprint for a NRF chip.

REV 3 has a switch circuitry,  REV 1 and 2 have a NRF port.

tecnico.solarboat
Offline
Last seen: 1 week 1 day ago
VESC Original
Joined: 2018-06-28 14:43
Posts: 17

Thanks Frank for the information. So according to the photo bellow ours should be a REV2 even though it did came with the firmware for REV1 installed given that the VESC Tool identifies it as a 75_300 and not 75_300R2 right?

Captura de ecrã 2021-06-10, às 11.47.05.png

frank
Offline
Last seen: 8 hours 53 min ago
VESC BronzeVESC GoldVESC OriginalVESC Silver
Joined: 2016-12-27 20:19
Posts: 433

Yes, it probably had the wrong FW on. The FW changed because of the internal NRFmodel was changed and pinout was different. VESC-Tool identifies the unit according to the FW it finds.

Just flash R2 FW and you are good. Sorry for the confusion!