Could I have ruined the mount somehow? Because it doesn’t make sense that it won’t even fit on the front trucks but it’s loose on the rear trucks yet the other mount is perfectly fine.
I’m using lipos so it’s all good
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Hey yall, I stumbled upon the Boardnamics website… Intrigued by their m1 helical gear drive. But, just wondering in general what the current overall consensus on helical drives vs belts vs sealed belts. I ride street so belts are pretty good for me, but curious about upgrading to gears for increased torque/acceleration. the sound might be a deal braker though cause my belts are practically silent. just wondering what you guys would do if you could start a street set up from scratch with all the latest equipment available
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Gears all day. Such good freeroll and such efficient power transmission. I go for straight cut as I don’t care about the noise and they’re easier to get replaced and service.
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Nice. what gear drives do you have? whats the word on boardnamics helicals? seem like the cheapest setup
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Boardnamics straight cut. Go for helical if you’re ok with sacrificing efficiency for noise reduction.
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less efficiency with helicals vs straight… really? Never heard that before
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Straight cut has less surface area in contact and therefore a lower coefficient of friction
FTFY
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Can anyone make heads or tails of this data sheet here:
YJ-18039-nRF52840 datasheet.pdf (651.2 KB)
I’ve applied 3.3v to pin 14 and everything else accordingly but can’t seem to program the modules with my VESCs via SWD. Should I try applying 5V to pin 22?
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Yup did a bit of poking around, I’ll link a doc below but the short version seems to be that the Vdd-nRF is for powering just the NRF chip rather than the whole board, because the board has more functions like programming and configuration. 5V on pin 22 (and making sure GND is connected) should work
It also (I think) is an internal node so it goes Vin → internal regulator → Vdd-nRF node → nRF chip, that way you can skip the external stuff if you want if you already have a suitable regulator that can power the NRF chip
Any photos you have would be v helpful just to see the specific board and make sure there’s no problem like connecting to the wrong pin
This is the documentation for a bigger development board with that chip, but it’s from Nordic themselves and if you search for vdd you’ll find the relevant parts. It’s fairly well written
Nordic_nRF52840-DK_UG.pdf (12.6 MB)
This is a bit clunkier and my brain glossed over it a bit but also interesting
https://infocenter.nordicsemi.com/index.jsp?topic=%2Fps_nrf52840%2Fpower.html
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anyoen tried the spintend 100v?
also anyone got logging from them
i want to know if 100 battery amps per side is feasible
Feeding the VBus pin with 5V didn’t seem to make a difference, still can’t connect to the modules MCU through VESC tool and I don’t have an STLink to try as an alternative. I know the module is at least partially working as it broadcasts a general 2.4ghz signal to my phone, any suggestions?
I want to use my Flipsky dual 4.20 plus with 12s in FOC. In this thread VESC wiki it says that this way of usage will mostly fry the DRV chip… So will driving it in BLDC be better and if so, should I still take a shot and try FOC?
BLDC is much less likely to fry it than FOC is. My recommendation would be to stay away from FOC on 12s with that ESC.
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Okay thanks. Will do, even tho I wanted a quiet board haha. But then i´ll ride till I have the money for a new vesc.
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Does anyone done the discharge mapping for P42A?
https://lygte-info.dk/review/batteries2012/Molicel%20INR21700-P42A%204200mAh%20(Gray)%20UK.html
| % | V |
|---|---|
| 100% | ? |
| 90% | ? |
| 80% | ? |
| 70% | ? |
| 60% | ? |
| 50% | ? |
| 40% | ? |
| 30% | ? |
| 20% | ? |
| 10% | ? |
| 0% | ? |
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ahh, The Datasheet Dude 
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