Noob question thread! 2020_Summer

i assume you checked your cables and connectors? Nothing unplugged itself? Re-did motor detection?

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yeah sensor detection fails but regular detection works, Just used METR to do that for the first time. Cool stuff.

When I give a small roll it works fine, I’m just worried about it happening at speed.

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Won’t start from standstill without sensors mate. Go for a first push for 2-3km/hr to start, AFTER you make sure there’s nothing else terribly wrong in the board, like shorted motors

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since you got that, does it spit any faults out while doing what you did in the video?

Maybe start a record and do it again if you can re-create it.

that obviously. No sensor = cogging/ no start from standstill. If your sensor were detected fully and it still happens thats a different story.

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My greatest weakness :dizzy_face:

nope. I think it is just a terrible motor noise. I think I’ll just have to see how it sounds when actually riding.

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the sound it makes before that Nazgûl scream is normal when cogging. The Nazgûl scream should not be there if you are just cogging. I remember when i had my abs_overcurrent fault it sounded very similar to that.

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Really, have a look first, re-do detection without sensors and try it out. That sound is relatively normal in unsensored if you can’t budge it at all. If you monitor it you’ll see vesc suddenly pumping max erpms into it

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Interesting thank you… I will disconnect sensors and blow them. That always works.

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Hfi is decent, just saying.
Look at detection values. If they’re too different something’s fucked in the windings.
If it’s like …
51.27A / 50.94A
23.78mOhm/ 24.01mOhm
(Pure examples) it good.
If you see your phone number in ohm values it not good

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@Fosterqc like these

TB
tb

flipsky
flip

just @kevingraehl’s

Let me re do them now just for fun!
image

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Good Day Everyone,

Been hanging out on the old forum for way too long and thanks to @b264 for directing me to you brilliant people. Following same said advice to post a question so if I got this wrong @Fosterqc I sincerely apologize :thinking:

I have a two projects on the go: A stand-on electric golf push cart with major components from Maytech. Works great but has a few niggles I’m hoping to get a bit of help with on here.
The other project is just killing me! I used Maytech motors, vests and remote for my son’s longboard build and have hit a mountain of trouble trying to configure it using the ackmania vision of vesc tool for a Mac (Fully Apple household). I will tackle the issues one by one, but just wanted to say hi and to make sure I got the noob asking a question but right?

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that’s estUUpid… the male ends are more prone to accidental shorting than the female end…

:brain: :dash: :beer:

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Introduce Yourself and Share Your Plans (SERIOUS)

here ya go!

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Welcome. Btw vesctool is now available on Apple :wink:

https://github.com/rpasichnyk/vesc_tool/releases/tag/v2.05

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Thank you and THANK YOU!
And @Fosterqc, I’m headed to the introduce yourself as I write so thank you too.

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I would just update to the latest version available on vesc project site and buy a bluetooth module (ranges from £12.50 to £25) and do the wizard, then tinker with settings from there.

Takes a bit of getting used to, but keep in mind:
When you connect, you are changing settings on the vesc side the bluetooth module is connected
When you scan canbus, you are presented with all other vescs connected through can. On a dual it’s just 1 other.
Keep in mind if you are adjusting remote settings, on which side you connected it to.
Read, change value, when write settings to vesc. They will not write on all vescs, you need to connect/disconnect from can as needed and repeat the process on all vescs.
Remember to change max battery and battery regen amps to what suits your battery pack.
I wouldn’t pass the total maximum discharge rate of the pack/ split to the number of vescs (let’s say a 40A pack on a dual is 20A/side)
For regen, a safe start is double the fast charging rate of the batteries. Example: 4pair 30q battery can charge at 16A. Double is 32, split on a dual vesc it’s again -16 amps/side regen.

These are advices which will differ depending on who you ask, but should give you a decent start in what you want from a board

Edit: avoid hm-10 bluetooth modules. Discontinued compatibility. Look for nrf types

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Thanks @Athrx. That was my very next task this afternoon and thank God you mentioned the incompatibility aspect of the hm-10’s because just as mosquitoes can seek ME out in a crowded room, I am brilliant at picking the one wrong item amongst crowded pages of goodies!

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What are you guys doing yo keep your phase wires from touching? I was going to cover where the connect in Velcro sleeves but wanted to see if this was a bad idea or if there are better/cleaner solutions.

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I triple sleeved them in heatshrink before putting the braided sleeves over it all

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