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Documents Building an Open-Source Tool for Cave Surveying -- Episode-647
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  • Author Author: tariq.ahmad
  • Date Created: 21 Mar 2024 3:09 PM Date Created
  • Last Updated Last Updated: 21 Mar 2024 3:43 PM
  • Views 2258 views
  • Likes 8 likes
  • Comments 4 comments

Building an Open-Source Tool for Cave Surveying -- Episode-647

Join Phil, an avid caver as he recounts his journey of creating a cutting-edge cave surveying tool. Reflecting on his experiences in the 1990s, where primitive equipment like mechanical compasses and cumbersome tape measures hindered exploration efforts, Phil recognized the need for a more effective solution. 

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The initial challenges Phil faced with traditional equipment included the inconvenience of low visibility, magnetic interference from lighting sources, and the impracticality of taking measurements in precarious cave conditions. Determined to streamline the process, he delved into research and development, exploring the potential of magnetic sensors, accelerometers, and laser technology. 

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Over the years, Phil's designs evolved, culminating in the creation of "The Shetland Attack Pony," a compact yet robust cave surveying tool. Initially featuring a basic alphanumeric display and rudimentary laser pointer, subsequent iterations integrated advanced components like transparent cases, ruggedized displays, and high-range laser rangefinders. 

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The journey wasn't without its challenges, as sourcing compatible components and optimizing circuitry proved to be formidable tasks. Phil's meticulous approach to circuit design, including the strategic placement of sensors to minimize interference, underscores his commitment to functionality and reliability. 

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Embracing open-source principles, Phil's latest iteration incorporates user-friendly microprocessors and circuit Python, empowering fellow enthusiasts to customize and enhance the device according to their needs. The modular design facilitates easy component replacement, ensuring adaptability and longevity in a dynamic exploration environment. 

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As Phil concludes his demonstration, he emphasizes the importance of collaboration and community engagement in advancing cave exploration technology. With his innovative tool in hand, he hopes to inspire fellow cavers to embrace the spirit of innovation and join in with iterating on new versions of the tool and its software or creating your own! 

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Downloads & Links:

  • Download Code & CAD Files!
  • GitHub:   https://github.com/furbrain/STIC
  • Egismos website
  • App

Bill of Material:

Product Name Manufacturer Quantity Buy Kit
Picoblade 3-way right angle connector Molex 1 Buy Now
Tactile switch Alcoswitch 2 Buy Now
Lipo Battery 523450 950mAh Bak Technology 1 Buy Now
1.0uF Ceramic capacitor TDK 2 Buy Now
4.7uF Ceramic capacitor TDK 1 Buy Now
Lipo Battery Charger IC Torex 1 Buy Now
SPOX 3-way connector Molex 1 Buy Now
Picoblade 5-way connector Molex 1 Buy Now
Picoblade 3-way connector Molex 1 Buy Now
Piezo Speaker Multicomp 1 Buy Now
2k resistor Multicomp 3 Buy Now
3.3V linear regulator Diodes Inc 1 Buy Now
XIAO nRF52840 Sense Seeed 1 Buy Now
 

Additional Parts:

RM 3100 magnetometer module
Egismos Laser Module 2
OLED display screen

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element14 presents  |  About Phil Underwood |  Project Videos

  • Magnetic sensor compass
  • Customizable cave exploration gadget
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  • DAB
    DAB over 1 year ago

    Very nice tool.

    You did a good job of putting off the shelf components together with an easy way to expand the basic tool for other uses.

    Well done.

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  • beacon_dave
    beacon_dave over 1 year ago

    Very nice project and looks like the perseverance over the years has paid off.

    Interesting laser distance module. I think the link needs updating though as I'm getting an error. Looks like this is the one.
    https://www.egismos.com/laser-distance-module-2M&ovs=80

    ( Looks like it might be possible to make a low cost entry level 3D-Disto/total station for indoor surveying with one of these modules.)   

    I like the chunky buttons. I was using my laser Disto yesterday and one of the problems I was having was to keep an eye on the laser target whilst at the same time trying to press the right button to take the measurement !

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  • furbrain
    furbrain over 1 year ago in reply to kmikemoo

    I went to a meeting with a bunch of cave surveyors - some of them said they found aiming the smaller case tricky, which is why I made it longer.

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  • kmikemoo
    kmikemoo over 1 year ago

    Nice tool.  Nice build.  Really like that you upsized the case.  Not everything need to be ultra tiny. Thumbsup

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