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DIY Altimeter for small Rc planes Answered

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you can buy altimeters for your Rc planes but their $50+ and i want to know if theres any way i can make an altimeter made from stuff available at radioshack theses planes are light 10-20oz with a 20-40 inch wing span. So i need to know if it is possible to make a small light one for cheep. And if i can then if some body could show me a diagram of how that would be great.
Thanks for the help.
i just need it to record the maximum altitude reached

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user
bigpinecone (author)2007-08-23

well that's be nice to have, i got a plane with a bomb drop and i could find out how high i dropped things =D

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frank26080115 (author)2007-07-16

Radio Shack won't have the stuff you need. Are you trying to log altitude and download it to a computer or have it do something mid air based on altitude?

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user

i want to look at maximum altitude reached. im not sure how i will retrieve the data, ether small LCD screen, some sort of flashing led pattern, or a usb hook up to computer. it depends on witch would be the smallest and simplest and witch i could actually build for cheaper than just buying an altimeter.

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user

Maybe the "witch" can make one for you!

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user

freescale has analog pressure sensors, you can sample them for free. then you can get either some circuit that stores the charge for you to measure with a voltmeter or use a microcontroller to take in the highest recorded altitude and display it with LEDs as a binary number.

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