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Handheld Capacitive Wall Scanner With Raspberry Pi & Touchscreen |
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by saveitforparts |
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This is a handheld capacitive 2D imager that can "see" |
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into surfaces like walls, floors, furniture, etc! It's |
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kind of like a high-tech stud finder for identifying |
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what's inside your wall! |
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The original creator of this technique is @optisimon, his |
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video can be found here: |
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https://www.youtube.com/watch?v=j5DztX6e-d8 and more info |
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is on his website here: |
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http://optisimon.com/raspberrypi/t |
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ouch/ft5406/2016/07/13/raspberry-pi-7-inch-touchscreen- |
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hacking/ |
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I made some modifications to the code so it would work |
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better as a standalone handheld unit. My write-up and |
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code can be found here: |
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https://saveitforparts.wordpress.com/2021/12/02/handheld- |
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capacitive-scanner-wall-x-ray/ |
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Please note that you need a Raspberry Pi official 7" |
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touchscreen with an FT5406 chip. The newer FT5426 and |
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other chips won't work! I had a very difficult time |
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tracking down this somewhat older model screen! |
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As a quick overview of some of the steps I took to get |
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this working: |
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-Installed Rasbian Stretch (newer Rasbian versions didn't |
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work) |
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-Enabled Full KMS for external HDMI screen |
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-Followed the Readme files on Optisimon's page for |
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configs etc. |
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-Changed SDLWindow.hpp column iteration |
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-Changed zoom level from 40 to 50 in SDLEventHandler.hpp |
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-Made a shell launch script with xdotool calls for |
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keystrokes |
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-Added a startup .desktop entry. |
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(Full writeup is on saveitforparts.com). |
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Source: https://www.youtube.com/watch?v=8ASxPRd8jXo[1] |
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Uploader: saveitforparts[2] |
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References |
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1. https://www.youtube.com/watch?v=8ASxPRd8jXo (link) |
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2. http://www.youtube.com/user/saveitforparts (link) |
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Date Published: 2022-04-26 17:19:10 |
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Identifier: youtube-8ASxPRd8jXo |
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Item Size: 367027179 |
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Media Type: movies |
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# Topics |
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Youtube;video;Science & Technology;Ra... |
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# Collections |
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mirrortube |
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additional_collections |
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deemphasize |
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# Uploaded by |
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@corentin_barreau |
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