Replies

  • DG June 19, 2015 at 7:24pm

    I used this on one copter; seems to do the job.  Out of stock though.

    http://www.readymaderc.com/store/index.php?main_page=product_info&a...

  • Jason Bush June 17, 2015 at 6:17am

    Somewhat similar to some other comments...I chose to use a stepup. I am running an ImmersionRC TX and have a Lumineer 12v camera. The transmitter has a 5v out. This ImmersionRC 12v StepUp costs a little more, but I liked it because the ins & outs were on opposing sides and kept the profile low for mounting. For the wiring, I was able to come right out of the TX with 5V, into the stepup, and then feed the 12v camera.

  • David Pulvermacher June 17, 2015 at 5:16am

    Thanks to all those who replied...

    Seems that there are many ways to skin this cat!

    Best DP

  • OwlPic June 17, 2015 at 4:20am

    For low power items like controller and receivers ....

    Five to 6 diodes in series. The "line" on the diodes all go on the 12volt side.

    Measure and see how many diodes are needed.

    Otherwise a 4.2 volt zener:

    http://www.digikey.com/product-detail/en/1N4731A-TP/1N4731A-TPCT-ND...

    This is 1 watt max so limit current to 100ma or so.

    • David Pulvermacher > OwlPic June 18, 2015 at 9:59am

      It seems that 12v LEDs can be overpowered a bit....

      I found this article which sort of obviates my original question.

      http://electronics.stackexchange.com/questions/122989/powering-12v-...

      Having looked at the specs of my equipment more carefully, the Tarot gimbal will work on a 4S supply, although they recommend 3S. the Immersion 600Mw Tx can be powered by a 4S. The only real problem remaining is that my RCtimer MinimOSD does not have bringing facilities and needs a 12v supply one end.I use the GoPro battery to power the camera.

      So it seems that the easiest way to overcome my 12V problem, would be to power the Video/ OSD from a separate smaller 3S battery and leave the LEDs as they are. This obviously has an avantage related to flight times too.

  • Jamie Nelson June 17, 2015 at 3:36am

    You could have a smaller secondary 3s battery on board for that. Or you could split the voltage using a simple voltage divider circuit made of a couple of resistors. Alternatively there may be a BEC component you can add to drop the voltage?

  • James Wright June 17, 2015 at 3:28am

    Yes, I would suggest using a 12 volt switching bec. However on your video power supply I would also use a filter to filter out noise from the switching. 

    Here is what you need below: 

    Voltage regulator

    Filter

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