Search found 940 matches

by rew
02 Apr 2016, 12:03
Forum: Related Hardware
Topic: Hall Sensors -> SS411A?
Replies: 16
Views: 4933

Re: Hall Sensors -> SS411A?

I remember something about hall sensors often having open drain outputs, and that VESC does not have the pullups.

I don't remember clearly, so it could also be the other way around: I wanted to use the pins for something but the pullups were in the way.
by rew
01 Apr 2016, 07:21
Forum: General
Topic: Compiling VESC firmware on Windows
Replies: 30
Views: 11688

Re: Compiling VESC firmware on Windows

egrep is a shell script on my system. It reads:

Code: Select all

#!/bin/sh
exec grep -E ${1+"$@"}
.

If you change all occurrances of "egrep" in your Makefile into grep -E, You'll be fine.
by rew
31 Mar 2016, 16:05
Forum: For sale, orders, etc.
Topic: VESC-based board(s) for sale....
Replies: 42
Views: 12076

Re: VESC-based board(s) for sale....

FYI: Current on 5V is more than I expected: about 70mA. Running the motor costs 2mA extra.... USB also costs something like that (but is included in the 70mA) a 7805 from the 12V should be able to handle that. So I'm counting on 100mA, 700mW for the 7805, and also 100mA (rounded up from my measured ...
by rew
31 Mar 2016, 16:02
Forum: General
Topic: Compiling VESC firmware on Windows
Replies: 30
Views: 11688

Re: Compiling VESC firmware on Windows

It is looking for the egrep binary. If that is not available, grep is an alternative. Just copy the grep binary over, or find the spot where egrep is mentioned in the makefile.
by rew
31 Mar 2016, 08:45
Forum: For sale, orders, etc.
Topic: VESC-based board(s) for sale....
Replies: 42
Views: 12076

Re: VESC-based board(s) for sale....

After measuring the current on the 12V and 5V, I'm moving to a 25x25mm step-down board for the 12V. And simply a 7805 for the 5V. (I expect about max 50mA on the 5V, and similar on the 12V). The above is my current debugging setup (I think I'll be moving it to my bike for reliability testing), the n...
by rew
31 Mar 2016, 08:33
Forum: General
Topic: Current control gain
Replies: 4
Views: 1627

Re: Current control gain

And both in current control mode?
by rew
31 Mar 2016, 08:24
Forum: General
Topic: Compiling VESC firmware on Windows
Replies: 30
Views: 11688

Re: Compiling VESC firmware on Windows

Make is telling you that somehow it didn't manage to find that rule. It says; No rule to make .elf! So that rule is not executing. Not because of anything IN the rule, but because it didn't find THAT rule. For your convenience I added echo BLALBLA on line 234 of the rules.mk file and when I type mak...
by rew
30 Mar 2016, 12:32
Forum: General
Topic: Compiling VESC firmware on Windows
Replies: 30
Views: 11688

Re: Compiling VESC firmware on Windows

As you see in the makefile, around line 267, the ".bin" should be generated from teh ".elf". That section explains to make how to do that. In the chibios sources, the rest, including "how to build the .elf" is being "explained to make". On my system that works...
by rew
30 Mar 2016, 12:25
Forum: General
Topic: Current control gain
Replies: 4
Views: 1627

Re: Current control gain

You have them on the same VESC? In theory you're quite lucky it works at all. It is unlikely that the motors are in the same "phase", So if one motor needs "phase 1: A+B-" the other one might be in "Phase 3: C+A-". The timing belt enforces then that both motors stay the...
by rew
30 Mar 2016, 12:18
Forum: General
Topic: case for VESC
Replies: 10
Views: 3580

Re: case for VESC

We did a similar test here. At a certain point we noticed the temperature about 75C. Then we set "max temp" configuration to 60-80, and we noticed that the board would automatically start slowing down when the temperature hit something like 70 degrees. That works! So then we were confident...

Go to advanced search