Search found 1124 matches

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: 18564

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: 18564

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: 9045

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: 18564

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: 18564

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: 1484

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: 1484

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: 1484

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: 1484

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: 12969

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: 18564

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: 18564

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: 18564

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: 18564

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: 18564

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.
by whereswally606
Apr 13 2018 11:16am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 18564

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

Make sure you get the correct gate resistors for the Fet you are using? Which are the correct resistors for the 4468 fet, Nobody is using anything else? Ive just put in a digikey order with the components in the picture before. Am I missing something? This just added £40. I feel like I'm gaining no...
by whereswally606
Apr 13 2018 7:33am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 18564

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

There is an issue with the Zip on the first page. It contains a file called component list, it is missing some of the cheaper more generic components on the board here are the missing parts. Power_PCB missing from original component list.ods components missing.png I only realised when attempting to ...
by whereswally606
Apr 13 2018 4:19am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 18564

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

progress from yesterday don't do it like this. using scrap extrusion from a upvc window IMG_20180412_202702web.jpg here is were my screws went in (white arrow) to be attached from the outside IMG_20180412_202710web.jpg A lot of tedious filing and grinding went into this and it is useless. after all ...
by whereswally606
Apr 08 2018 4:30pm
Forum: Items for Sale - New
Topic: Group buy for lebowski powerpcb components
Replies: 12
Views: 1278

Re: Group buy for lebowski powerpcb components

Wife and I were busy tonight sorting components into boxes. That said, it is possible if Emmgee, ColeAstering and Minimum want their power boards and components ahead of the brain board then they are ready waiting to be posted. That way you guys can have fun building whilst i do the same and try my ...
by whereswally606
Apr 06 2018 9:52am
Forum: Battery Technology
Topic: Help me reinforce this DC to DC step up.
Replies: 8
Views: 751

Re: Help me reinforce this DC to DC step up.

I had the bst900 and so I built (designed and plastic printed) a box to help the fan pull air over the heat sink better, that did 15a pretty easy. but didn't have to do that for long on my lifepo4 as the batteries draw tapered away pretty quickly as they fill up. What about putting high speed fans a...
by whereswally606
Apr 04 2018 7:23am
Forum: Items for Sale - New
Topic: Group buy for lebowski powerpcb components
Replies: 12
Views: 1278

Re: Group buy for lebowski powerpcb components

Parcel arrived from pcbway 10 powerboards, so 7 left in stock.