Search found 1130 matches

by whereswally606
Jun 25 2018 6:22am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22841

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

Yes that sounds ok to me, bas might chip in with a better informed opinion. Just don't turn off under power.
by whereswally606
Jun 23 2018 10:55am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22841

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

So the issue in my view cole is that when you attach the brain under the board as in lebowskis vids you can flip the whole construction brain side up and see the leds flash directly. To place the brain pcb on the other side you will need some longer headers to avoid physical clashes with other discr...
by whereswally606
Jun 15 2018 5:30am
Forum: E-Vehicles General Discussion
Topic: World's most efficient and aerodynamic car
Replies: 10
Views: 1366

Re: World's most efficient and aerodynamic car

Kind of laughable, the video claims no compromise on a lots of important factors in the car, But fails to mention that massive hole through the centre of the car axially. So you loose quite of a lot of cabin space. I think this is probably a joke rather than a serious design.
by whereswally606
Jun 13 2018 4:16am
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1806
Views: 216144

Re: Lebowski's motor controller IC, schematic & setup, new v2.A1

Great Work Bas, looking forward to this. Maybe its time your new chip and software had a thread of its own. Stop people getting confused. :D
by whereswally606
Jun 06 2018 7:15am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22841

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

The LM5017 is a 100v dc buck but I would probably keep it under 90v to be conservative. You can always power it separately from another buck dc supply and feed the brain 15v instead if you have to run high voltages
by whereswally606
Jun 05 2018 6:10am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22841

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

careful not to heatsoak those sensors, ive killed some before with too long on the soldering iron. I guess flux is your friend there. Good luck. Btw I pimped the brain board but granted with a lot of help from Lebowski, it is his code which is driving all this greatness. :P
by whereswally606
Jun 04 2018 6:53am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Cagiva Supermoto Bulid (4kW Legal)
Replies: 61
Views: 12124

Re: Cagiva Supermoto Bulid (4kW Legal)

I have old dvt Software on my xp windows machine that worked with the sevcon controller dongle, couldn't get it to work on 7 or higher. Have you tried on an older OS?

Hope this helps?
by whereswally606
May 31 2018 3:49pm
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22841

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board



This is an update for arber333 but i just wanted to post it here and show that soon there will be a 4th smd lebowski brain out in the wild. This one is to go in something bigger than a bike i believe. good luck Arber.
by whereswally606
May 22 2018 4:14am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22841

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

I also had a rethink about the through hole parts. I found an equivalent smd cap to the big green cap off to the left in coles photo and bought some in. This should tidy it up quite a lot. Will maybe do similar with the other orange cap as they can be soldered with one end to the board and then adjo...
by whereswally606
May 03 2018 3:43pm
Forum: Large EV General Discussion
Topic: 400volt charger from server PSU's
Replies: 10
Views: 1719

Re: 400volt charger from server PSU's

I'm subbed to him already, yeah he seems a decent chap with his heart definitely in the right place. Getting parts second hand cheap ain't always that easy. Evmotorwerks got back to me on a kit for 12kw at about $1450 or half of the assembled cost. That's still lots more than 4 esp120s and a 2gen Pr...
by whereswally606
May 02 2018 2:42am
Forum: Large EV General Discussion
Topic: 400volt charger from server PSU's
Replies: 10
Views: 1719

Re: 400volt charger from server PSU's

I've experienced the same thing trying to charge the leaf of the 2kw brick and a long extension. When I came to unplug the socket was noticeably warmer. I was more thinking that I would use the 7kw Level 2 capable sockets usually there are two side by side. That should give me 14kw.(I don't think id...
by whereswally606
Apr 27 2018 4:29am
Forum: Large EV General Discussion
Topic: 400volt charger from server PSU's
Replies: 10
Views: 1719

Re: 400volt charger from server PSU's

Yep got one esp120, interesting about the prius booster that's a good plan. I figured all I would need to find is a 32amp capable 230v ac outlet, run all four chargers off of that via a 4 four way to some IEC kettle lead type plugs. The aim here is to be able plug into either a 32amp commando socket...
by whereswally606
Apr 26 2018 5:49am
Forum: Large EV General Discussion
Topic: 400volt charger from server PSU's
Replies: 10
Views: 1719

400volt charger from server PSU's

Don't know if this is the best part of the forum for this but... Copied and pasted from my rant post of Speakev.com I retrospect I've been looking at ways to not be reliant on the rapid chargers. The was a chap from Metric mind in the US who put 3 Brusa chargers boosting his 3.3kw output of his 2011...
by whereswally606
Apr 17 2018 4:17am
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 128
Views: 15758

Re: The ebike parts designing thread with CAD/CAM

somebody asked me for this via pm, so I thought id upload it for all and share it in a semi relevant thread it is an enclosure for the bst900 dcdc to get better airflow on the mosfet and to keep fingers and loose wires out a bit. https://www.thingiverse.com/thing:2865841 sorry if this is in the wron...
by whereswally606
Apr 16 2018 4:11pm
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22841

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

Tonights progress IMG_20180416_215918_800x449.jpg So I didn't do any in the brain boards tonight. I was up at 6am and I didn't feel awake enough to solder the fine pitch stuff. So tomorrow I should have something to test with. bas before I power up this bad boy are the 4r7 resistors in r18-r23 corre...
by whereswally606
Apr 16 2018 2:08pm
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22841

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

coleasterling wrote:
Apr 16 2018 12:03pm
If you come up with a heatsink design I'll gladly machine it and send them out to the other beta guys.
That's a very cool offer. I'll look into it.
by whereswally606
Apr 16 2018 4:46am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22841

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

Digikey parts arrived. so should be able to finish my power board and update the other 3 kits from the group buy. I bought 6 more assemblies worth to make up the shipping so It was free and will sort those and sell them with the spare boards I bought, that way in the long run it wont matter about th...
by whereswally606
Apr 14 2018 8:05am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22841

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

I twisted some 1mm copper ground cable to a coil and soldered it to resemble your beefing up of the power traces.

Also I've left a decent gap from the board to the bottom of the heatsink.

Just got to wait for parts now
by whereswally606
Apr 13 2018 1:28pm
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22841

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

IMG_20180413_192550_800x410.jpg
This is as far as I could get today. Hopefully Monday I'll have more parts and can finish it.