Hi Rufus, the OSH Park Project - 7135 is OK and tested. The hybrid(DD) version may need a re-design. Can be used as is if only using 4x7135, 8x7135(stacked) or any from 1 to nx 7135 that you can fit. Cheers!
Thanks Tivo, I’ll need a link to the board at Oshpark so it works like the others. I can’t access anything earlier than July 30, 2013 to create a link in the op. Do they dump older files? And would we need to save them somewhere to re-upload if necessary?
The big diode & inductor (must be used together), & big cap are optional. Depends on how low the low needs to be, and whether it needs to be dead silent or not. There's a range of inductors that will work also, 1.2uH gives a pretty big effect on dropping the low mode reeeeally low, but anything from .58 to 1.2uH can be used. The 1.2 is a good baseline choice that should work for 90% of folks.
Payday I will be ordering 3x FET SKR, 17mm, and more than likely the 15mm as well (need a link to the FET though)
I already have 10x Tiny13’s and control items (the diode, resistors, and cap)
But with that link, I know which ones to order if I need more of Tiny13 control components
I think I might also whip up 2x of the Texas Pyro 20mm Nanjg’s as well (I have 50 of those 3 leg diodes in his design)…might do a giveaway and find guys that have a good record of testing drivers and send them a few to test em out (I can build em but don’t have the setup to properly test and whatnot)
Wicked cool idea on the pre-populated cart…great job!
You talking to me? If so sure…would you like me to build you a TexasPyro 20mm and ship back to you for trade?
and/or can you test the 32*7135 build? I really don’t have any way to do a current test and/or a SRK with enough heatsinking to hold up to that kind of current…plus it seems you have a much better setup (I don’t really have one) to test/review boards or whatever
I have 2 of the V1 no tab SRK boards by Mattaus (will be getting 3x V1.1 asap [probably not this payday as I had to replace a ruptured water heater today ], haven’t put em together (shouldn’t take but an hour or so) but still have 2/3 of 100 7135 strip I got from FT…
This should be a similar cart for the 17DD & 20DD boards: http://www.digikey.com/short/hqzd0
The Vishay 70N02 FETs are here: http://www.ebay.com/itm/271319198579
For those who want one-stop-shopping and/or single parts instead of the batch of 10pcs from ebay, this part from Digikey should be about the same: http://www.digikey.com/product-detail/en/AOD510/785-1481-1-ND/3603497 I have not personally used one so no guarantees, but the 'important' specs look right. TO-252/DPAK, 3.2mOhms, 21nC gate charge, low gate threshold voltage, etc.
I just noticed the ebay listing, there was only 1 sold when I first found them, now it's up to 56. lol.
Wow, what happened to the price on the tiny13?? Last week I ordered 30 @ $0.54 each, and right now the same quantity of the exact same part in the same packaging is $0.99 each?! :O
$0.54 each or per set of three?
I’ve done ⌀ 10.11 mm for $0.75 (set of 3) and ⌀ 10.39 mm for $0.80 (set of 3). Its still giving the same prices if I go to reorder those. Same prices for other projects too.
“Tiny13” or Tiny12? If not the 12.12 mm Tiny12 then what is the exact size of these $0.99 boards?
I only used that one making the lists because at the time, it was the cheapest one Digikey listed. That price bump moves the total cost up to where it's getting close to being cheaper to use a 105C as a parts donor. Sucks.
Absolute rock-bottom pricing would probably be in bulk from somewhere like aliexpress, but you have to take into account the shipping time and possible shady sellers/counterfeit parts. Probably not worth the risk.