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Learning how to build Lotus Seven replicas...together!
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PostPosted: December 31, 2015, 12:10 pm 
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stuie84 wrote:
Have you measured or have an idea of the force required to actuate the dart trigger? Obviously the trigger needs to be stable enough to not go off prematurely.

Also holding a head on while spinning for a long duration of time is much different then a momentary pulse of force.

I took my telescoping magnet the other day and ran it under the bench a few various sizes of metal. I found that there was a sweet spot for size as far as the effect the magnet had. To small and the magnetic field ignored it and obviously too large and magnetism could not over come the weight or friction.

http://physics.info/lorentz/

I think some more research, calculations and purchase of miscellaneous parts are required to work out your experiment.

:cheers:


p.s.. don't forget that this is a gyro. whatever weight you add above the center line you need to add that weight under and opposed of it to maintain equilibrium.



Yup I do have some measurements from the part i bought. See attached. It is a basic spring loaded dart that has a hook that catches on the back of the block. When you push on the back of the dart it fires.

Measuring near the latch you have about .5 to 1lbs of force (hard to measure on my force gauge) and about .100 of deflection. Obviously the further back I go on the dart, the less amount of force that is required but more deflection.

Trying to figure out the magnetic part now.


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PostPosted: January 6, 2016, 5:03 pm 
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any one have any experience wiring a FPV camera to an existing Bluetooth module for real time video?

Looking at using one of these guys.

http://www.fpvhobby.com/63-1-gram-nano- ... 80tvl.html

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PostPosted: January 8, 2016, 5:14 am 
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You'd be better off using a 5.8GHz TX and dedicated RX, since bluetooth does not have the data rate for live video, unless you use VDP, in which case you would need to rework the existing bluetooth radio.

I'd say snag the camera + TX/RX pair from a cheap nano quadcopter, and mod that in.

The other option is to use WiFi for the streaming video and control, which is I think what parrot uses in their drone.

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PostPosted: January 8, 2016, 11:26 am 
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yeah wifi would be best but i am not sure how to set that up to have live feed to a phone. Any suggestions on that? Like the go pro does.

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