Ozone generator case with 120mm fan

thingiverse

Ozone generator case ================ for versions 12V or 110/220V with countdown timer ozone generator like https://www.aliexpress.com/item/4000093113502.html Include two versions VERSION 1 - box only ----------------------------- V1_and_V2_bottom.STL or you can use "V1_top_without_holes.STL" as bottom V1_and_V2_wall.STL V1_top_without_holes.STL V1_and_V2_foot_4parts.STL (print four parts) VERSION 2 - box with timer ------------------------------------- V1_and_V2_bottom.STL or you can use "V1_top_without_holes.STL" as bottom V1_and_V2_wall.STL V2_top_with_holes_for_display_cables.STL V1_and_V2_foot_4parts.STL (print four parts) case for display and keys --------------------------------- (TM1638 LED&KEY) Display case is remix from: https://www.thingiverse.com/thing:3252459 https://www.aliexpress.com/item/1005002311295227.html V2_display_holder_on_top.STL V2_button.STL (print severparts) V2_button_reset.STL (little button for reset on switch no.8) timer with display and Arduino --------------------------------------- 1× Arduino Nano or other MCU 1× SSR module of relay module for control ozone generator (https://www.aliexpress.com/item/1005002317643550.html) and it needs solve how to control fan by arduino pin I used simply transistor switch with 1× NPN transistor like MPSA56 or BC337 or 2N3904 etc 1× resistor 2k2 1× diode like 1N4001 you can see circuit scheme is possibly use another switching module with mosfet or SSR or relay Simply code for Arduino and how to use timer and how to connect pins: .ino file in google documents: https://docs.google.com/document/d/1FDfFgGlN-zXwUUKzNtRdd0T4UtOV9XKttxlDFIfs49k/edit?usp=sharing download .ino file directly: https://drive.google.com/file/d/1eRtqkNJtIODWJzky61gHxZn5xQIp8lIh/view?usp=sharing