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Search took 0.01 seconds. Search: Posts Made By: isaac_alaska
Forum: Open ReVolt: open source DC motor controller 10-25-2012, 04:45 PM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
haha paul i think you mean there HASS to be a...

haha paul i think you mean there HASS to be a wiring issue ;)
Forum: Open ReVolt: open source DC motor controller 05-28-2012, 06:17 PM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
i don't think it's ever been socketed...

i don't think it's ever been socketed before....it's a good piece and the board has protection in it so there's a resistor that will burn out before the converter. the only problem i know of with the...
Forum: Open ReVolt: open source DC motor controller 04-18-2012, 05:01 PM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
speaking of cooling, i machined my first heat...

speaking of cooling, i machined my first heat sink today!

it fits underneath an SOT-227B package, and i fly-cut the mating surface. i'll post a picture of it as soon as my phone isn't 2% away from...
Forum: Open ReVolt: open source DC motor controller 04-09-2012, 11:15 PM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
paul, you should have a motor sometime wednesday,...

paul, you should have a motor sometime wednesday, i dropped it at fedex today but it was after the cut-off so it won't ship till tomorrow. i used the address u gave me earlier. i also put in a...
Forum: Open ReVolt: open source DC motor controller 03-21-2012, 08:30 AM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
definitely, but you would need to build a new...

definitely, but you would need to build a new power board to mount all of the MOSFETS and diodes to.
Forum: Open ReVolt: open source DC motor controller 03-16-2012, 01:06 PM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
Please please please don't use plexiglas for your...

Please please please don't use plexiglas for your enclosure. Use polycarbonate. The difference in strength is orders of magnitude. Plexiglass will shatter just trying to drill it. Polycarbonate is...
Forum: Open ReVolt: open source DC motor controller 03-15-2012, 01:52 PM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
we will be uploading a compiled video of...

we will be uploading a compiled video of different things that went on at the event. included is a (somewhat horrible quality) video of the first judge's response when he got done riding it. it...
Forum: Open ReVolt: open source DC motor controller 03-14-2012, 09:51 PM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
i found this! it's pretty sweet. i also found...

i found this! it's pretty sweet. i also found videos of the sled pull and the acceleration runs. i'll edit them in to this post in a few minutes
...
Forum: Open ReVolt: open source DC motor controller 03-14-2012, 02:04 PM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
oh hey, i guess it never got posted here, but we...

oh hey, i guess it never got posted here, but we totally blew away the competition with our electric machine this year at the SAE Clean Snowmobile Challenge! first place in all but two of the nine...
Forum: Open ReVolt: open source DC motor controller 02-23-2012, 06:59 AM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
http://farm8.staticflickr.com/7068/6922977799_a878...

http://farm8.staticflickr.com/7068/6922977799_a878bd6763_b.jpg


It's hard to see, but the entire top of the capacitor bus plates are covered in 7 mil adhesive backed electrical insulating mylar....
Forum: Open ReVolt: open source DC motor controller 02-20-2012, 11:39 PM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
that is awesome! very nice :) incidentally,...

that is awesome! very nice :)

incidentally, we tested the board and controller at 200 volts today! even with no load on it, i can already tell it's WAY smoother than the old controller. with the...
Forum: Open ReVolt: open source DC motor controller 02-19-2012, 11:56 PM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
i'm using an HTFS-800P current sensor. i believe...

i'm using an HTFS-800P current sensor. i believe adam has the code, as i sent the board to him to program it. and then used his RTD explorer to set it up for my throttle input.
Forum: Open ReVolt: open source DC motor controller 02-19-2012, 11:40 PM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
check it out Paul! this is your control...

check it out Paul!

this is your control board i got from you like a year ago. between me and adam, we got it set up, and i built an enclosure for it. and now it's running on a 12V pack of lead...
Forum: Open ReVolt: open source DC motor controller 12-31-2011, 02:28 AM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
paul, i'm using the little melexis board you sent...

paul, i'm using the little melexis board you sent me to measure current for the peter perkins bms i'm putting together. the bus bar i tested it on is 1 inch wide instead of 3/4 inch, and gives an...
Forum: Open ReVolt: open source DC motor controller 12-28-2011, 10:57 PM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
quarter inch thick lexan, you can drill and tap...

quarter inch thick lexan, you can drill and tap holes into it from the edges. it's thick enough for a 10-32 to screw into it. cut out strips on a table saw, then cut them to to length (rectangles)...
Forum: Open ReVolt: open source DC motor controller 11-14-2011, 09:01 PM
Replies: 164
Views: 51,917
Posted By isaac_alaska
i found the problem, in the BG2A application...

i found the problem, in the BG2A application notes, the gate resistors are labeled Rg. On the pcb i have, they are labeled R3 and R7. since the name "R3" is already used on the pcb (for the fault...
Forum: Open ReVolt: open source DC motor controller 11-03-2011, 02:39 PM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
yeah! we got your back. you can use us as...

yeah! we got your back. you can use us as references if you need them ;)
Forum: Open ReVolt: open source DC motor controller 09-12-2011, 04:17 AM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
http://www.youtube.com/watch?v=fwehIXAKjgg ...

http://www.youtube.com/watch?v=fwehIXAKjgg

http://www.youtube.com/watch?v=qKZ63zB3So4

hopefully they'll work this time.
Forum: Open ReVolt: open source DC motor controller 09-11-2011, 05:02 AM
Replies: 7,381
Views: 2,409,940
Posted By isaac_alaska
i think i just found what i was looking for, on...

i think i just found what i was looking for, on the wiki. it has all of the pcb files along with the BOM for each controller revision. i'm at home on my little laptop right now (and also it's bed...
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