Hello,
You can also look at the devices made by www.transolve.com. John had an article published in the old Radio-Electronics magazine back in the early 90's using an RCA 1802 micro for an altimeter. It had a plugin display so you could see the rocket's progress in flight. He only uses PICs now. He works closely with several high powered rocket clubs now and has ads in the major rocketry magazines. Check him out.
BobK
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