Can anyone familiar with Carvon hubs help me identify my problem?
Setup:
I’m using Dual Carvon 2.5 hub motors with 2 Ollin 4.12 Vescs using a y splitter servo cable to connect to the receiver (not using canbus cable). I’m also in FOC mode.
Issue:
One of the hubs spins sometimes. When it doesn’t it just makes a high pitch squeaking grinding noise.
What I did (I’m dumb I know)
Everything was great but I thought the trigger on my Gt2b was a little too sensitive.
I was messing with PPM app configuration to get more range.
In doing so I must have accidentally hit “read default configuration”.
I found out something was wrong when one motor was significantly louder. I road one block and turned around and I lost brakes.
When I checked the setting on the vesc I noticed it was set back to default motor configuration with BLDC.
I reloaded the firmware and loaded the settings when it worked.
Motor detection for FOC works every now and then.
Now I get the noise on one motor and it just vibrates and squeals. No Fault code.
I also noticed the servo wire was loose on one of the vescs. Since I have been opening and closing my incredibly tight enclosure. I think the servo wire may have broke. So I re soldered a fresh y split servo wire. There also may be a slight possibility I connected the servo wire backwards, but really don’t think so.
Check the length of your battery and ESC wires; VESC is sensitive to the length of battery wire.
Soldering these once you know how you want everything wired up is a good step that many folks here recommend. At the very least, hit the connection with hot glue to keep it stable.
For some reason after I did motor detection, hit apply and then write configuration I noticed the bottom right corner of the app never said it was writing. So I rebooted then hit write again. Now its working!
Would you mind PM or posting your vesc settings, or screenshot? I am configuring dual Carvon v2.5 now, on dual ollin vesc, but on 12s2p. Having some issues, trying to figure out if it is the config or the remote. I basically used @RunPlayBack settings but sticking with BLDC until I get it stable as hear FOC on 12s is not as EZ as 10s! If I have your BLDC or FOC settings, I can probably figure out what I am doing wrong, and if a VESC or remote issue. THanks for any help!
Yeah sure…this is for my 12s1p though so results may vary.
RIK A2ESK8 12S1P LIFEPO4 MINI CRUISER SETTINGS 7/22
FOC enabled
Motor Max: 60.00 A
Motor Min: -60.00 A
Bat Max: 40.00 A
Batt Min: -12.00 A
Absolute Max: 130.00 A
Max ERPM: 60000.00
Min input voltage: 8.00 V
Max input voltage: 57.00 V
Battery cut off start: 33.00 V
Battery cut off end: 30.00 V
Thanks! Also, I think I have the startup boost setting wrong, it is ramping really slowly even on bench test which a first!
Anyway, I know that setting is for BLDC only and you are FOC, but I defaulted to 0.04…does that sound really low, what do people tyrpically use between 0.1 and 0.01? If that is not it, need to look elsewhere for the problem.
