Wanhao i3 Filament Runout Sensor and Guide
cults3d
I needed a simple filament runout sensor for my Wanhao i3(Maker Select v2.1) printer that would be easy to install and take up minimal space, so I could mount it snugly between the spool holder on the top gantry and use it as a filament guide too. I combined and customized barrettdent's End of Filament Sensor (Switch) REMIX with cyul's Wanhao i3 Duplicator Filament Guide v2 to create a basic mounting system. I'm using these micro switches from Amazon, but any others should work just fine: https://www.amazon.com/gp/product/B00MFRMFS6/. For more information on switch fitment, check out this thing on Thingiverse: https://www.thingiverse.com/thing:2204729.
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