Search found 1128 matches

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: 22190

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: 1501

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: 858

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: 1501

Re: Group buy for lebowski powerpcb components

Parcel arrived from pcbway 10 powerboards, so 7 left in stock.
by whereswally606
Apr 03 2018 4:21am
Forum: Items for Sale - New
Topic: Group buy for lebowski powerpcb components
Replies: 12
Views: 1501

Re: Group buy for lebowski powerpcb components

Parcel arrived from Digikey. This means (since Bas sent me one of his boards) that I should be able to build my powerboard up and document the process. Film and word. Repair the brain boards which have zeners which should be shottky diodes. Still waiting on the customer power boards but the progress...
by whereswally606
Apr 03 2018 1:40am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22190

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

Is this the next gen chip or the same but perf board variant of bobc brain?
by whereswally606
Mar 29 2018 4:17am
Forum: Items for Sale - New
Topic: Group buy for lebowski powerpcb components
Replies: 12
Views: 1501

Re: Group buy for lebowski powerpcb components

Order Placed...

had all my questioned answered by Lebowski so will send out kits once all parts arrive (this includes PCB and brain boards)
by whereswally606
Mar 28 2018 4:55am
Forum: Items for Sale - New
Topic: Group buy for lebowski powerpcb components
Replies: 12
Views: 1501

Re: Group buy for lebowski powerpcb components

groupbuy3.png groupbuy3web.png Cole, no worries it is moving fast. I've scaled down some of these spreadsheet images as no one seems to down load the attachments (maybe it doesnt register, idk?) This is the latest dialed in. Just need confirmation on the sensors from Bas. If anyone else wants in on...
by whereswally606
Mar 28 2018 4:22am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22190

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

LLC ACS770ECB-200B-PFF-T (620-1538-5-ND) instead of LLC ACS770KCB-150B-PFF-T (620-1540-5-ND) Bas should we upgrade to this sensor since we look to all be opting for the 4468 fets and this gives us a bit of head room. Please check my comparison i think this is the direct equivalent upgrade, i dont wa...
by whereswally606
Mar 27 2018 9:20am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22190

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

PCBs on their way to me from pcbway via epacket. just received the email now.
by whereswally606
Mar 26 2018 12:06pm
Forum: Items for Sale - New
Topic: Group buy for lebowski powerpcb components
Replies: 12
Views: 1501

Re: Group buy for lebowski powerpcb components

new updated costs Whereswally606 £64.32 Minimum £73.88 Emmgee £73.88 Cole £63.49 If you were wondering why my costs were less I have some irs2186 chips left over from the previous Lebowski board projects. Cole your costs just up marginally as 6 is below the price break of 10 for your mosfets. Let me...
by whereswally606
Mar 26 2018 11:40am
Forum: Items for Sale - New
Topic: Group buy for lebowski powerpcb components
Replies: 12
Views: 1501

Re: Group buy for lebowski powerpcb components

This is fine Emmgee, that is why I did the Spreadsheet so I can quickly add and remove stuff and fire it back at the bom upload tool on digikey. I suspect you are right about the price.
by whereswally606
Mar 26 2018 7:33am
Forum: Items for Sale - New
Topic: Group buy for lebowski powerpcb components
Replies: 12
Views: 1501

Group buy for lebowski powerpcb components

groupbuy.png Minimum, ColeAsterling and Emmgee can you have a look at this png of a spreadsheet that I worked out for the group buy. If there are parts you want extra or ones you don't then let me know. Minimum £73.44 - I put in your extra 4468 fets but didn't know whether you want the other mosfet...
by whereswally606
Mar 23 2018 8:34am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22190

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

I have ordered 10 power pcbs to be combined with kits to build the complete power board which are to be sent out with a working tested brain board. I used china post since ive never had customs charges with them but always with dhl and I don't really know about the other couriers. Anyway. My paypal ...
by whereswally606
Mar 23 2018 5:11am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22190

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

I have put an order in for 10 power pcb boards connector such that the brain is below the board as per the videos. (not above with the other discretes). Will pass audit today and will hopefully be with us within a month. Hopefully if I can get organised I can get all the parts for a full kit put tog...
by whereswally606
Mar 22 2018 9:15am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22190

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

so Is that true of any TO-247 fet? So the other Fet people have mentioned for this is the 4468 and looking at a price break of 10 4468 = £6 IXTH180 = £3.8 so £36 or £22.824 per six fet stage but the spec on the 4468 are much more impressive. alternatively MTI85 chip is £20.40 (but you need a differe...
by whereswally606
Mar 22 2018 8:01am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22190

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

I will take this on, along with the group buy for components from digikey. cap processor board supply 100uF 1 P5595-ND cap battery measurement 100nF 1 478-4855-ND gate driver IRS2186 3 IRS2186PBF-ND high voltage schottky diode MBR1100 9 MBR1100GOS-ND power FET IXTH180 6 IXTH180N10T-ND isolation pad ...
by whereswally606
Mar 20 2018 5:23am
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 125
Views: 16888

Re: Another SMD lebowski PCB

thanks Cole. Done another 3 last night (so 6 now), I still have to hand solder on the inductor and the poor fitting cap (which consequently cant be reflowed). Waiting for prototype 2 tests before releasing them out into the wild. Bas (Lebowski) has this and is testing soon. I also need to build my p...
by whereswally606
Mar 20 2018 5:12am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22190

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

Hey Minimim, I bumped into the same thing yesterday. comparing the spec this is the alternate I came up with based on fit and similar electrical characteristics and its also in stock. 565-4142-ND Manufacturer Part Number EKZN101ELL271MK30S Description CAP ALUM 270UF 20% 100V RADIAL I think the resis...
by whereswally606
Mar 19 2018 2:58am
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 125
Views: 16888

Re: Another SMD lebowski PCB

@ coleasterling - paid @ Minimum - paid IMG_20180318_223120WebSize.jpg here are three boards I reflowed last night, they have still got to have the 220uH inductor and another cap hand soldered on but they are mostly done. Need testing also but these will go out to coleasterling, Minimum first. Emmge...
by whereswally606
Mar 17 2018 11:24am
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 125
Views: 16888

Re: Another SMD lebowski PCB

Received another package from the big "L"

7 main pic chips. And the first prototype back for repairs.

Going to start batch production tomorrow evening testing then to follow. Big thanks to all those who have already paid I hope to have you boards ready soon.
by whereswally606
Mar 15 2018 5:11am
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 125
Views: 16888

Re: Another SMD lebowski PCB

Thx EG, Anyway another package at work today. Not the main chips yet(they are enroute) but another batch dcdc chips. These are the lm5017 soic8 chips which go with the original 200 bobc brain pcbs I ordered. Now I have potential to make more boards as I'm no longer restricted by the dearth of this p...