Build your own simple Air Quality Sensor using a Plantower PMS5003 and a Wemos D1 Mini, as shown in Episode 38. Download the STLs and print the case yourself, or buy it ready-made in a variety of colour options.
Printed on a Prusa i3 Mk3S using PETG, at 0.2mm layer height with a 0.4mm nozzle.
Note: This is a 3D-printed product, so the finish isn’t perfect and the colour may not be exactly as shown on screen. My printer is well tuned and I clean up any strands of filament, but it’s not the same as an injection-moulded case.