Home Assistant NFC Tag Holder

prusaprinters

<p>This is a decorative holder for NTAG215 coin-style NFC tags (<a href="https://www.amazon.ca/Ntag215-Compatible-Memory-Enabled-Devices/dp/B07PFC2FH5">Specifically sized for these tags I purchased from amazon.ca</a>).</p><p>The design allows for an appropriately-sized NFC coin tag to be embedded into the <strong>holder</strong> part during the print. &nbsp;The <strong>frame</strong> part was specifically sized to cover the screw holes and discolouration left behind by the keypad from an old Chamberlain garage door opener.</p><p>These tags are easily integrated into a <a href="https://www.home-assistant.io/">Home Assistant</a>-based automation system, and can be read from/written to using the <a href="https://companion.home-assistant.io/download/">Home Assistant Companion App</a>, assuming your phone/tablet fully supports NFC.</p><p><i>Note that metal surfaces can interfere with the reading/writing of tags. &nbsp;If you intend to mount the tag holder on a metal surface you will either need to purchase tags specifically designed to function close to metal surfaces, or space the holder far enough off of the surface to prevent interference. &nbsp;I have included an optional <strong>spacer</strong> .3mf file that can be used for this purpose. &nbsp;You may need to increase the thickness of the <strong>spacer</strong> in order to make a difference - it depends on the tags you use and the metal surface you're mounting it to.</i></p><h4><strong>Print Instructions</strong></h4><p>Gcode files are sliced for Prusament PLA on an MK3/S using the <i>0.20mm QUALITY MK3</i> setting. I used the default 15% infill for the <strong>frame</strong> piece, and 20% infill for the <strong>holder</strong> piece. &nbsp;The <strong>holder</strong> Gcode includes two pauses for filament changes and to allow embedding of the NFC tag - one at 1.4mm and the other at 2.8mm. &nbsp;The NFC tag should be inserted into the hole in the print during the first colour change pause.</p><p>3mf files have been provided for those who want to do the slicing themselves. &nbsp;Note that the <strong>frame</strong> part should be printed face-down, and you will need to insert pauses for the colour changes in the <strong>holder</strong> piece.</p><p>The Fusion 360 source file is also available in the files section for those who want to make changes, incorporate a different logo, etc.</p>