Justin Finkle
  • Brighton, MA
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Justin Finkle's Discussions

Throttle controls half backward

Started this discussion. Last reply by Justin Finkle Aug 3, 2012. 2 Replies

I had my hexacopter on the back burner as I put together some wooden arms together for it.Anyway, I updated the Mission Planner software and reloaded the firmware onto the APM. I did the radio…Continue

Wireless Video Setup

Started this discussion. Last reply by Philthyy Feb 20, 2012. 4 Replies

There have been a varying number of threads on this, but the information seems to have changed.I'd like to set up a wireless video system. I'll probably forgo video for photography, but nevertheless…Continue

Hexacopter Battery Suggestion

Started this discussion. Last reply by u4eake Dec 13, 2011. 2 Replies

I'm looking to get a battery (or batteries) for a hexacopter. As the name implies it has 6 of these…Continue

Selecting a Radio System

Started this discussion. Last reply by Justin Finkle Dec 13, 2011. 8 Replies

I'm very new the RC world and I'm trying to pick a radio system for a hexacopter. The three wireless components I'll probably have are the RC controls, XBee telemetry, and a video downlink.I'm…Continue

 

Justin Finkle's Page

Latest Activity

Justin Finkle replied to Justin Finkle's discussion Throttle controls half backward
"Thanks! Worked perfectly. Had a successful flight and everything. Just need to tweak the controls so that it flies nicely now."
Aug 3, 2012
Dave replied to Justin Finkle's discussion Throttle controls half backward
"Instead of reversing on the APM, set the Throttle to reversed on your transmitter."
Aug 2, 2012
Justin Finkle posted a discussion

Throttle controls half backward

I had my hexacopter on the back burner as I put together some wooden arms together for it.Anyway, I updated the Mission Planner software and reloaded the firmware onto the APM. I did the radio calibration and now my throttle is sort of backwards. Using this page as reference in Mode 2 here are the symptoms:The motors arm when the throttle is top rightWhen the throttle is lowered slightly the motors start spinning,…See More
Aug 2, 2012
Philthyy replied to Justin Finkle's discussion Wireless Video Setup
"You should definitely check out readymaderc.com. He sells wireless video systems at all freqs, ships fast, and has an awesome reputation. 5.8ghz is an option, but I suggest 1.28gz because its not as susceptible to multipathing."
Feb 20, 2012
Justin Finkle replied to Justin Finkle's discussion Wireless Video Setup
"I think the 5.8 ghz seems to be the best option for range and lack of interference. I plan to use telemetry so the 900 mhz and 2.4 ghz frequencies are off limits.  I had looked before on RangeVideo but missed the 5.8ghz tx/rx modules.…"
Jan 20, 2012
Ben Lawson replied to Justin Finkle's discussion Wireless Video Setup
"I found a link to this site in another post on this website. They seem to have a large range in prices. http://www.rangevideo.com/ I found your post because I'm searching for the same info your looking for.. I think from I have read so far…"
Jan 15, 2012
Justin Finkle posted a discussion

Wireless Video Setup

There have been a varying number of threads on this, but the information seems to have changed.I'd like to set up a wireless video system. I'll probably forgo video for photography, but nevertheless I'd still like to see the CCD image on a laptop as I fly so I know when to snap a photo.Can someone provide a straightforward guide to selecting and setting up a video feed? I already have a 2.4Ghz radio system, and will add a 900Mhz Xbee module. Does this limit me to a 5.8Ghz downlink?As I…See More
Jan 11, 2012
Justin Finkle replied to Justin Finkle's discussion Selecting a Radio System
"One minor detail...does it matter if the Radio system is meant for Heli or Planes? I figured we're just hijacking the controls so it shouldn't matter right? I was thinking of one of the futaba's listed here:…"
Dec 13, 2011
u4eake replied to Justin Finkle's discussion Hexacopter Battery Suggestion
"Have some fun with this copter calculator.  You'll learn lots of stuff :-) http://www.ecalc.ch/xcoptercalc_e.htm?ecalc"
Dec 13, 2011
wraith replied to Justin Finkle's discussion Hexacopter Battery Suggestion
"hi, i have a hexa spider running on another board, i run a 5400mha battery 45c, 925kv motors, its weighs about 2.5kg, i get around 12-14 minutes flight time"
Dec 13, 2011
Justin Finkle replied to Justin Finkle's discussion Selecting a Radio System
"Correction: I didn't actually do any math for battery sizing, I just kind of went by what was posted. Haha. Anyway, with your examples and some research I've looked into it some more. Here's a link to my new thread. Hopefully…"
Dec 12, 2011
Justin Finkle posted a discussion

Hexacopter Battery Suggestion

I'm looking to get a battery (or batteries) for a hexacopter. As the name implies it has 6 of these motors. So if I've calculated things out properly, and I'm just learning about this stuff now, the maximum current draw should be 120A plus whatever the APM needs (which I think is minimal?).Here's what I was thinking: 4000mAh at 30C would give me the requisite 120A.  However, at full thrust that…See More
Dec 12, 2011
apocolipse replied to Justin Finkle's discussion Selecting a Radio System
"Um you need to redo your math on that one.  6x30A = 240A of current draw, so you're going to need a much bigger pack.  basic battery math is mAh rating * discharge rating = stable current discharge.  2200mAh, and 30c (40c peak)…"
Dec 9, 2011
Justin Finkle replied to Justin Finkle's discussion Selecting a Radio System
"So the hexacopter I've got going has six of these motors and matching 30Amp ESCs (BEC: 2A/5V). What would you suggest for a LiPo? I was thinking of this battery. I'm hoping to get 20min of flight time while lifting a camera. How's my…"
Dec 9, 2011
apocolipse replied to Justin Finkle's discussion Selecting a Radio System
"Oh and range will be overly variant.  2.4ghz radios can usually do about 1km or so.  upgrading to a UHF tx/rx module will cost you $200-$300 (in addition to the radio controller, UHF is just a module) and boost range anywhere between 10km…"
Dec 7, 2011
apocolipse replied to Justin Finkle's discussion Selecting a Radio System
"Nicer features would include stuff like advanced mixing capabilities (which the Turnigy9x can do with a firmware upgrade to one of the many open source fw's for it), higher quality/precision gimbals, tunable ppm spacing, telemetry, etc.…"
Dec 7, 2011

Profile Information

About Me:
I'm an energy consulting engineer working on building efficiency.
Tell us a bit about your UAV interest
I've used the Arduino for other projects, but using it for UAVs is much more complicated and sounds interesting. I'd like to initially use a UAV to do some great aerial photography, but hopefully find other applications later.

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