Air purifier for resin printer

thingiverse

A simple, battery powered, filter-based air purifier for resin printers to eliminate odors. Inspired by the Anycubic AirPure and Elegoo Mini Air Purifier.Dimensions: 53x53x118mmOther parts:1 pc activated carbon filter 48x48x15mm cut to fit from a sheet1 pc 5010 fan (Gembird D50SM-12AS)1 pc 18650 li-ion battery cell1 pc 18650 battery holder1 pc li-ion charger module with cell protection (TP4056 + DW01)1 pc boost converter module (with 2108A ic)1 pc switch1 pc USB Type-C receptacle1 pc LED1 pc LED holder+wires,connectors,optionally self adhesive rubber pads,M3 screws of different length - at least 2 for the fan and 4 for the bottom part. Holes have threads.Originally I did not designed a LED into the device, but fixed that mistake by drilling a hole for it as a satisfying stage of post-processing. By aiming at minimal power consumption, quality of step-up converter is key. Tried several different combinations of fans and switching regulator modules. Finally the 12V fan driven by 5V with some cheap boost converter only stresses the battery with less than 100 milliampers of current and only adding 10 more with the LED. So with a decent capacity battery it will last 10s of hours. The step-up converter has the 2108A ic, the silkscreen says "canton-power" and surprisingly, from the ones I tried that was the cheapest by far.