brontide's blog archive for February, 2013 - RC Groups
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Archive for February, 2013
Posted by brontide | Feb 22, 2013 @ 01:23 PM | 9,354 Views
Finally have a nice day for flying and one of my motors burns up

Posted by brontide | Feb 13, 2013 @ 01:16 PM | 9,439 Views
Proximity flying.

Pretty boring, and yes, I know I need to turn down my roll gain, but the BT dongle was being cranky this morning.
808 keychain could probably use a focus adjustment and a better mount.

Proximity practice ( boring, crappy video ) (0 min 0 sec)

Just need to find someplace where I can not only do proximity but speed.
Posted by brontide | Feb 10, 2013 @ 07:50 PM | 9,314 Views
Got tired of hunting down things before going flying and I think my wife was getting a little peeved about the junk everywhere. Picked up a hard case from harbor freight tools.
Posted by brontide | Feb 04, 2013 @ 09:45 AM | 10,059 Views
The other 4 motors from the mini-H I decided to make a mini-funquad. I started with my super simple frame ( 2 arms overlapping in the center ) made out of 1/2 by 1/4 basswood, pinned it in place with a Flip 1.5MWC, used Plush 10a ESC's ( blheli 9.4 ), turnigy 1811 2900kv, and 4x2.5 props.

1/2x1/4x8" (x2) Basswood arms - JoAnne's ( ~$2 )
Witespy Flip 1.5 MWC ( ~$20 )
Turnigy Plush 10a ESC - BlHeli 9.4* (x4) HobbyKing ( $9 )
Turnigy 1811 2900kv (x4) HobbyKing ( $10 )
4x25 Props (x2) HobbyKing ( $2/6pc ) - Use 5x3 Gemfans, far less hassle and more thrust.

Misc items include Rx, 3s battery ( 30-40a rating, 800-1600mAh ), lighting, and connectors of your choice.

A few words of warning, the little props at high RPM are a bear to balance, but it is necessary to balance as best as can as well as enabling 42Hz LPF in the sketch. Without proper balancing the quad will behave very erratically and will probably be uncontrollable.

As can be seen in one of the pictures below it's AUW is under 300g and that is with 1600mAh battery. On my flight this morning I got 8.5 minutes and the charger put back in 1000mAh, so when the weather is not sub-0 I should be able to do 10 minutes per flight. In retrospect I should CA or hot glue the two arms in place, clean up the standoffs with some m3 nuts, and snip the wiring down to size but otherwise it's a blast to fly. Very stable flight pattern and responsive even with an oversized battery.

For the lighting I'm using basic 12v strips, I stripped the ESC and added a jumper from the ESC to strip to reduce the number of wires into the wiring harness.

* BlHeli 9.4 added some code to support very high RPM switching, I don't know if this would work with BlHeli pre-9.4 I have not tried. As always choose a flashed ESC platform of your choice, don't go with the Plush just because I listed it here.