Search found 319 matches

by district9prawn
Jan 22 2021 6:04am
Forum: Motor Technology
Topic: I'm looking for developers/engineers interested in high current (+1kA) controller development
Replies: 13
Views: 1035

Re: I'm looking for developers/engineers interested in high current (+1kA) controller development

Did progress ever get made on this project? I've been playing around with instaspin recently for fun (strange idea of fun I know). I've been working towards getting a controller going with the 28004x.
by district9prawn
Jan 17 2021 5:57pm
Forum: E-Bike Non-hub Motor Drives
Topic: Single stage RC left hand drive
Replies: 11
Views: 300

Re: Single stage RC left hand drive

Nice parts, I really like the brake/sprocket adapter.

Is regen or braking possible on the castle controller?
by district9prawn
Jan 06 2021 5:37am
Forum: Battery Technology
Topic: JBC CD Soldering Station Question
Replies: 4
Views: 579

Re: JBC CD Soldering Station Question

I bet there's a tip that can do what you're after :lol:

Doesn't it just use a resistive heating element like most other stations?
by district9prawn
Jan 01 2021 12:31am
Forum: E-Bike General Discussion
Topic: phaserunner error code 1-8
Replies: 15
Views: 364

Re: phaserunner error code 1-8

Surely the controller is bad since you get normal values with the good PR on the same motor.

You can try measure the voltage drop across the body diodes of the mosfets with the dmm diode tester and see if there is anything funny there.
by district9prawn
Dec 30 2020 8:25pm
Forum: E-Bike General Discussion
Topic: phaserunner error code 1-8
Replies: 15
Views: 364

Re: phaserunner error code 1-8

Sorry I meant measure the voltage with your multimeter and see if it agrees with what the controller reports.
by district9prawn
Dec 30 2020 7:27pm
Forum: E-Bike General Discussion
Topic: phaserunner error code 1-8
Replies: 15
Views: 364

Re: phaserunner error code 1-8

Of course the controller is not going to drive the mosfets if one phase is at a very low voltage. Have you actually measured the open circuit phase voltages with the controller powered on?

I see you have measured the phase to supply negative resistance with a dmm and not found any shorts.
by district9prawn
Dec 18 2020 7:12pm
Forum: E-Bike General Discussion
Topic: 'unlock' ASI BAC 4000? (Surron controller version)
Replies: 3
Views: 146

Re: 'unlock' ASI BAC 4000? (Surron controller version)

The ASI software is actually called "Bacdoor". It's available for PC and android but the android version requires a valid ASI account and password (which you will probably not get). Also keep in mind that it is possible for a vendor to password lock a controller, in which case you will not...
by district9prawn
Dec 12 2020 8:30pm
Forum: Motor Technology
Topic: Small backup motor controllers.
Replies: 5
Views: 605

Re: Small backup motor controllers.

I've considered carrying a spare controller for a while now. Curious to see who else actually carries a spare or has one hooked up.
by district9prawn
Dec 01 2020 7:29pm
Forum: Motor Technology
Topic: Exro Technologies
Replies: 1
Views: 140

Re: Exro Technologies

Classic solution in need of a problem?
by district9prawn
Nov 30 2020 9:21pm
Forum: General Discussion
Topic: Linux geeks thread
Replies: 28
Views: 1033

Re: Linux geeks thread

I take it QEMU is also inherently faster than something like virtualbox? Not sure about speed but I don't think virtualbox supports gpu passthrough. ..can it also do USB audio device / PCI audio device passthrough? because that would solve a massive problem i have doing music production in a window...
by district9prawn
Nov 30 2020 7:05pm
Forum: Battery Technology
Topic: Daisy chain active balancer
Replies: 11
Views: 459

Re: Daisy chain active balancer

I believe the problem with these switched inductor and capacitor balancers is that the balancing current is proportional to the voltage difference. So my understanding is that the balance current tapers off and it gets quite slow as the cell voltages get closer.
by district9prawn
Nov 30 2020 6:58pm
Forum: General Discussion
Topic: Linux geeks thread
Replies: 28
Views: 1033

Re: Linux geeks thread

What virtual machine software can do a gpu passthrough? i'm intrigued! Check out the vfio kernel module. You use the vfio driver on the display you want to pass through. Then you can just add the pcie device in qemu the usual way. The performance is pretty darn good. To me the performance in games ...
by district9prawn
Nov 30 2020 5:54am
Forum: General Discussion
Topic: Linux geeks thread
Replies: 28
Views: 1033

Re: Linux geeks thread

I've run Linux on my laptops and desktops for a few years now. Distro hopped a bit initially but settled on Fedora with Gnome as I like their release cycle but with frequent kernel updates which is nice on newer hardware. Also use a windows vm with gpu passthrough for gaming and other windows only s...
by district9prawn
Nov 20 2020 5:27am
Forum: Motor Technology
Topic: Dana TM4 controllers
Replies: 3
Views: 159

Re: Dana TM4 controllers

ASI also has three access levels :?
by district9prawn
Oct 28 2020 10:30am
Forum: Motor Technology
Topic: Bosch performance line adding halls
Replies: 14
Views: 846

Re: Bosch performance line adding halls

The waveform from the hall sensor with the motor spinning should be 50% duty cycle as the rotor magnets toggle it on and off.
Is the vesc able to detect the hall table?
by district9prawn
Oct 28 2020 6:28am
Forum: Battery Technology
Topic: buying lipo in Australia 2020 Hobbyking...
Replies: 25
Views: 852

Re: buying lipo in Australia 2020 Hobbyking...

John Bozi wrote:
Oct 22 2020 4:48pm
(I am not keen on hundreds of cylindrical cells that I cannot repair).
Have you seen the nese modules?
by district9prawn
Oct 17 2020 12:51am
Forum: E-Bike Technical
Topic: What controllers are these ?
Replies: 9
Views: 410

Re: What controllers are these ?

District prawn I could give you a massive kiss what a find my friend thought I'd of been searching for ages for these, looks like i need a 0640 version to get the peaks and use my controllers heat sink. They let you do that when you're a celebrity :roll: There was a short thread on their controller...
by district9prawn
Oct 08 2020 8:49pm
Forum: E-Vehicles General Discussion
Topic: VESC Field Weakening
Replies: 5
Views: 668

Re: VESC Field Weakening

You would need to compile the vesc controller firmware and vesc tool program to use that branch. I'm not sure if that branch should be used for field weakening as only the MTPA code has been merged and not the FW part. I've implemented field weakening on my ebike a different way and have been riding...
by district9prawn
Sep 11 2020 9:22am
Forum: Items Wanted
Topic: Asi bac login credentials
Replies: 14
Views: 530

Re: Asi bac login credentials

Have you tried using the pc software? It does not require a login.
by district9prawn
Sep 10 2020 4:51am
Forum: Motor Technology
Topic: New ground-up ESC - MESC_FOC_ESC
Replies: 97
Views: 4892

Re: New ground-up ESC - MESC_FOC_ESC

Hey congrats on getting a motor spinning from scratch! Your project seems like a great way for people to learn motor about motor control. Arguably easier to get into than the available dev kits made for that very purpose.
by district9prawn
Aug 26 2020 8:01am
Forum: Items for Sale - New
Topic: N.E.S.E. the no solder module 21% OFF WINTER SALE
Replies: 446
Views: 77265

Re: N.E.S.E. the no solder module

Do you reckon your 26650 modules would work with 26800 if the print was scaled?
by district9prawn
Aug 22 2020 8:53am
Forum: E-Bike Technical
Topic: Help! Cyclone 1680 Gearbox Fail
Replies: 14
Views: 545

Re: Help! Cyclone 1680 Gearbox Fail

I spoke with technician, and he sad that cause of failure -is broken bearing. Because of it, a heavy load on the gears began I haven't seen your broken gearbox up close but the bearings in planetary gearboxes should be very reliably since the forces are balanced. Is your controller very rough and j...
by district9prawn
Aug 20 2020 5:33am
Forum: E-Bike Build Threads / Photos & Video
Topic: Neu 8057 6kW left hand drive hardtail with vesc and encoder
Replies: 70
Views: 14835

Re: Neu 8057 6kW left hand drive hardtail with vesc and encoder

Very cool! Is the field weakening firmware based on the Power Designs experimental branch of the VESC firmware? The field weakening current is calculated based on motor parameters. I think their strategy was to adjust Id to try and maintain modulation at the maximum. I did use their way of adding a...
by district9prawn
Aug 15 2020 4:05am
Forum: E-Bike Build Threads / Photos & Video
Topic: Neu 8057 6kW left hand drive hardtail with vesc and encoder
Replies: 70
Views: 14835

Re: Neu 8057 6kW left hand drive hardtail with vesc and encoder

Tweaked the fw a bit so that Iq decreases smoothly and there isn't that odd surge in power at high speed. Motor power and voltage are now more constant in the field weakening region.

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