$5.00 Wanhao i3 Filament Alarm
thingiverse
I was thinking to reflash the firmware on my i3 to support a filament switch but realized that it is more work than it's worth. Instead I designed this is a filament alarm for my Wanhao i3. It is designed specifically to use this filament guide. All you need is a 9v battery, a microswitch, 6-9v buzzer, switch and some wire and 9v lead. You can source all of the parts on aliexpress for under $5. Filament guide - Wanhao i3 by DasMani01_MANIfaktur https://www.thingiverse.com/thing:2512381 Parts: 9v battery microswitch 6-9v buzzer switch some wire and 9v lead. You can source all of the parts on aliexpress for under $5.
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