bluehash 1,581 Posted July 17, 2013 Share Posted July 17, 2013 @@Tribes If you want 43oh to sponsor the first batch of 10 boards as a design test, let me know. Also if you let me know by today, I can expedite it at Elecrow. Just mention me "@" or PM me. Quote Link to post Share on other sites
Tribes 10 Posted July 17, 2013 Author Share Posted July 17, 2013 @@bluehash thanks, sponsoring would be nice but the board is not completly ready yet(still have to include the changes suggested above) and won't be at least until Sunday. So I guess expediting won't be possible. Quote Link to post Share on other sites
bluehash 1,581 Posted July 17, 2013 Share Posted July 17, 2013 ok.. let me know when you are done. I'll just paypal you the amount. Quote Link to post Share on other sites
nimblemotors 23 Posted July 18, 2013 Share Posted July 18, 2013 I've built a BLDC controller, but it is not a sensorless. That really complicates things. With the sensor, control is really quite simple software, the power hardware is the difficult part. My system was orginally tested on a small Novac BLDC 1/10 scale R/C car motor. I used it for a Mars 15hp pancake motor for an electric jetski I built (but never finished). I orginally used a IR2130 as the gate driver, but my newer version uses two LT1161, and six fets in a sot227 format, these are so much nicer, mounted to aluminum heatsink. Jack Quote Link to post Share on other sites
Tribes 10 Posted August 3, 2013 Author Share Posted August 3, 2013 (edited) So, I finally got around to work on the board again. I replaced the 20pin G2553 with the 28pin TSSOP, routed the inputs of the drivers to TA1.1/T1.2 and added Zeners on the back-emf lines. In the schematic it still says IR2184 although I am going to use the IR2183(separate inputs for high-side and low-side), but since they are pin-compatible I was too lazy to change it. Oh and I also changed the Comparator inputs to CA1/4/5 vs. CA2 Schematic and board layout as pictures: Mockup pictures from OSHpark.com: And finally the eagle files: BLMC.zip I'll also update the first post. Edited August 3, 2013 by Tribes Quote Link to post Share on other sites
Lgbeno 189 Posted August 3, 2013 Share Posted August 3, 2013 Hi Tribes, Sorry but it slipped my mind to send out the BLDC booster. I wanted to rework it with some new changes that I was looking at and didn't get around to it yet. I do have some new code though that is coming along nicely. I don't think that the sch resolution is good enough to read the pin out completely but would like to take another look. Sent from my iPhone using Tapatalk 2 Quote Link to post Share on other sites
Tribes 10 Posted August 3, 2013 Author Share Posted August 3, 2013 Hi Tribes, Sorry but it slipped my mind to send out the BLDC booster. I wanted to rework it with some new changes that I was looking at and didn't get around to it yet. I do have some new code though that is coming along nicely. I don't think that the sch resolution is good enough to read the pin out completely but would like to take another look. Hey, no problem, I wouldn't have had the time to play with it anyway. But good to see you're working again on your BLMC, too And a high-res picture of the schematic: http://xchange.usp-connection.de/tribes/schematic.png (sorry, uploading it here somehow doesn't work right now, will try again later) Quote Link to post Share on other sites
Lgbeno 189 Posted August 3, 2013 Share Posted August 3, 2013 Looks good to me only thing that I would say is add pads far pull ups to the I2C lines. Sent from my iPhone using Tapatalk 2 Quote Link to post Share on other sites
Lgbeno 189 Posted August 3, 2013 Share Posted August 3, 2013 I guess one other enhancement would be to consider a way to attach a Hall effect sensors, using them is really handy for developing code. Sent from my iPhone using Tapatalk 2 Quote Link to post Share on other sites
Tribes 10 Posted August 4, 2013 Author Share Posted August 4, 2013 Good catch, completly forgot about the pull-ups! Added them and I added testpads connected to P3.5, P2.3 and P3.4 so I can connect hall sensors more easily if need be. Quote Link to post Share on other sites
Tribes 10 Posted August 11, 2013 Author Share Posted August 11, 2013 I finally ordered the PCBs at elecrow. Made some small changes like changing the packages of the diodes and I added some text(and a 43oh.com logo). bluehash 1 Quote Link to post Share on other sites
Lgbeno 189 Posted August 24, 2013 Share Posted August 24, 2013 Nice work, any idea when they will be built up? What is your test motor going to be? Quote Link to post Share on other sites
Tribes 10 Posted August 25, 2013 Author Share Posted August 25, 2013 Boards are on their way from elecrow, but I guess they won't be here for another week. I already got all the components from mouser (interestingly cheaper than buying them in Germany) so when the boards arrive I should be good to go. atm, I got a 800Kv 9.5A@11.1V and a 750Kv 18A@14.8V (both max. amp) motor. Oh, and both are hobby motors. But I'm still looking for a nice low Kv, low power(current) motor, and probably a sensored one. bluehash 1 Quote Link to post Share on other sites
username 198 Posted August 25, 2013 Share Posted August 25, 2013 Lookin sweet! Keep ups updated on the project. Boards are on their way from elecrow, but I guess they won't be here for another week. Takes roughly 2-4 weeks generally to USA, ND where I live =( . Be curious to see how fast they ship to Europe. Quote Link to post Share on other sites
Tribes 10 Posted September 7, 2013 Author Share Posted September 7, 2013 My boards from elecrow arrived yesterday! Not sure though if I have the time to solder them up this weekend :/ bluehash 1 Quote Link to post Share on other sites
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