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/****************************************************************************
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/****************************************************************************
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Title : SRF08 RANGING MODULE FUNCTIONS library
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Title : SRF08 RANGING MODULE FUNCTIONS library
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Author: Chris Efstathiou hendrix@otenet.gr
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Author: Chris Efstathiou hendrix@otenet.gr
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Date: 13/Jul/2002
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Date: 13/Jul/2002
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Software: AVR-GCC with AVR-AS
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Software: AVR-GCC with AVR-AS
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Target: any AVR device
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Target: any AVR device
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Info: This code is FREE. There are no copyright issues with this code.
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Info: This code is FREE. There are no copyright issues with this code.
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*****************************************************************************/
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*****************************************************************************/
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I use it to drive the SRF08 ultrasonic ranging module
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I use it to drive the SRF08 ultrasonic ranging module
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for use with Free Fall night parachute landing
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for use with Free Fall night parachute landing
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where i MUST know the distance from ground in order to land safely.
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where i MUST know the distance from ground in order to land safely.
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Infrared goggles gives you an idea about the drop zone
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Infrared goggles gives you an idea about the drop zone
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but you cannot judje the precise distance from the ground due to
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but you cannot judje the precise distance from the ground due to
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optics distortion.
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optics distortion.
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For programming example see the SRF08 module code.
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For programming example see the SRF08 module code.
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CAUTION: THIS IS A TEST PROGRAM. DO NOT USE IT FOR PARACHUTE LANDING!!!
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CAUTION: THIS IS A TEST PROGRAM. DO NOT USE IT FOR PARACHUTE LANDING!!!
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There are too many thing missing from the code like
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There are too many thing missing from the code like
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audio and visual alerts, height averaging, variable gain,
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audio and visual alerts, height averaging, variable gain,
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variable range settings and many other safety features
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variable range settings and many other safety features
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needed to make it suitable for this task!
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needed to make it suitable for this task!
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I can experiment because it is my life!
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I can experiment because it is my life!
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Its only purpose is to give an idea of how to use the driver code.
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Its only purpose is to give an idea of how to use the driver code.
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I hope it can help someone.
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I hope it can help someone.
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Chris.
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Chris.
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