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| 00:35.13 | Mirell | Hm... |
| 00:37.35 | g1powermac_EPC | got an asus eeepc 900ha today :-) |
| 01:54.28 | Mirell | http://gizmodo.com/5261664/id-actually-use-a-netbook-with-intels-moblin-20-os looks fascinating. |
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| 04:50.49 | pat_ | how are we doing? |
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| 05:25.18 | pat_ | hi |
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| 06:39.36 | pat_ | hi everyone |
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| 14:54.15 | pat123 | hi all |
| 14:58.07 | pat123 | cd .. |
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| 18:22.48 | rektide | what would a brushless motor controller use back-emf for? |
| 18:23.31 | Crofton|work | speed sensing |
| 18:24.22 | rektide | its not just speed though right, it has to know where the rotor is aligned ? |
| 18:24.33 | ds2 | or phasing |
| 18:24.35 | rektide | to know which coils to energize in which way |
| 18:24.42 | rektide | yeah phasing, thats the word i was looking for |
| 18:24.48 | Crofton | that too ? |
| 18:25.52 | rektide | ff i want to build an electric bicycle, but power electronics are not my forte |
| 18:26.08 | rektide | building a motor controller looks "interesting," but like more work than i want to do |
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| 18:27.30 | rektide | guess i'm just planning on figuring out what i need in a back emf sensor, what i need for drive controls, putting it together on a decent microcontroller then crossing my fingers i can scratch together some kind of control scheme |
| 18:27.35 | ds2 | backemf is cheaper then hall effects so... |
| 18:28.13 | rektide | the hub motor i'm using doesnt have a built in hall effect sensor, and frankly, a hall effect just seems like more things to break |
| 18:28.32 | ds2 | backemf is tricky |
| 18:28.46 | ds2 | noise, and other things |
| 18:30.05 | rektide | i confess i think i'm being difficult with myself |
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| 18:31.54 | rektide | i need a good book. bad. |
| 18:38.10 | rektide | i dont even know what drive tech i want to use. endless sphere forums all use FET's; i want to use igbt's but i'm not sure if separate freewheel diodes are still required in an hbridge. |
| 18:41.07 | ds2 | rektide: if you be very very very nice, there are folks in #emc that might know... that channel is for a Linux based controller for CNC machining but CNC machines deal with a lot of those similar issues |
| 18:41.20 | ds2 | bottom line is that is OT for the channel but the people there might know |
| 19:09.33 | chouimat|work | wanders in |
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| 22:15.44 | likewise | what's a good channel for POSIX interface programming questions? |
| 22:43.03 | roxfan | #c or #unix maybe? |
| 22:43.13 | roxfan | or you could just ask here |
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