Archived: the OG noob question thread! 😀

Kellag · January 30, 2020, 7:46am

Jesus Christ I wasn’t expecting that😂

b264 · January 30, 2020, 7:56am

AliExpress man

PrivacyDoctor · January 30, 2020, 8:18am

It is not the right glue for the job. But i got it back to working order.

Geo_Engineering_FTW · January 30, 2020, 8:18am

thanks

MysticalDork · January 30, 2020, 8:25am

Can you measure the diameter of the lens itself? Several of the places I know don’t go by manufacturer or model.

PrivacyDoctor · January 30, 2020, 8:37am

It’s 13/16 inch

PrivacyDoctor · January 30, 2020, 8:39am

Another dumb question: for a 8 layer spar urethane application, does a cure time beyond 2 weeks make any difference?

MysticalDork · January 30, 2020, 9:01am

Here is a link to a 20.5mm lens. Just double chacking, that 13/16" is the diameter of the lens itself, not just the ID of the bezel it’s sitting in?

xsynatic · January 30, 2020, 9:48am

i need them quick though

b264 · January 30, 2020, 9:50am

That sucks

Always keep lots of belts on hand in the future

When I get down to two of any size I use I order more

Or for 275-5M-15 I like to have 5 or more

PixelatedPolyeurthan · January 30, 2020, 10:10am

I really love the idea of a travable battery board and unlimited x solo is pretty cool ( not the price though)
It would be much cheaper with some quality stuff like neohubs but the whole mounting system is hard to find infomation on.
So i have a few questions regarding the setup.

What is this connector/ thing?

Annotation 2020-01-30 1002031652×1156 241 KB
the battery says smart bms. Does anyone know if this battery works with any vesc/remote or is it like evolves, the esc and bms only work together?

Annotation 2020-01-30 110346742×328 34 KB

cheers

Venom121212 · January 30, 2020, 12:37pm

I will say that b1 rubber piece could be removed but is definitely what does the waterproofing. It gets compressed while tightening the rest of the gland to make a seal.

I had to pre stretch mine to get it to fit around my cables.

ahrav · January 30, 2020, 3:26pm

What wire/connector are you supposed to use with the metr pro??

Arzamenable · January 30, 2020, 3:31pm

Why angular contact bushings over deep grove bearings? @Bindings_McGee ? Those on kaly boards, in Practice, are they smoother/tougher/faster?

PrivacyDoctor · January 30, 2020, 6:14pm

Oh, lovely!!
Yes, that is what I measured for the lens though it’s a tight fit. And I just had this to measure it with:

PrivacyDoctor · January 30, 2020, 6:40pm

Thank you so much! I bought the lens. Unbeatable price. And an awesome store! I am trying to find more alternatives to Amazon and this definitely made my list.

itsrow · January 30, 2020, 8:03pm

Anyone know if newer bluetooth modules are supported by the VESC software(edit)? Namely Hm19 or any bluetooth5.0 modules?

wafflejock · January 30, 2020, 11:59pm

I believe the VESC just uses a custom protocol over UART for communication (only thing I found searching the repo about bluetooth was a commit to change the rx_timeout in packet.c by Roman presumably to give it enough time to connect before timeout)

github.com

vedderb/bldc/blob/73d52d3ba4607414a91d1dee99f311e89b4d9608/applications/app_uartcomm.c

/*
	Copyright 2016 Benjamin Vedder	benjamin@vedder.se

	This file is part of the VESC firmware.

	The VESC firmware is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    The VESC firmware is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
    */

#include "app.h"

This file has been truncated. show original

I’m by no means a VESC firmware expert but starting to learn my way around STM32 tools and FreeRTOS (unfortunately VESC uses ChibiOS which I’m even less familiar with). I can’t find anything in the OS layer regarding a bluetooth driver though either, so I believe it is just using UART function calls from the VESC side of things and up to the module firmware to use (or implement, but I think can be copy pasted) the same packet format for communication over the UART.

Old article from Benjamin here too so source is probably a better view of current state of things but can get conceptual understanding of how it worked then at least http://vedder.se/2015/10/communicating-with-the-vesc-using-uart/

Edit could be standard Bluetooth firmware too and maybe the custom protocol just needs to happen at the serial communication layer (or I could be totally wrong all around… so yah take it all with a lump of salt)

itsrow · January 31, 2020, 12:20am

You obviously know more about this subject than I do and since you seem pretty unsure I’ll stick with HM10, thanks though!

MysticalDork · January 31, 2020, 12:27am

Yeah, KD has just about the best price and selection for flashlight parts, LEDs, and the like. Their shipping is predictably slow since they’re overseas, but I usually don’t mind.

Banggood is my other go-to source for random stuff - From electronic modules to endmills, they’ve got quite a range of stuff for the penny-pinching DIYer.