AA Battery base for glowing moon

thingiverse

This is a custom base with battery holder designed specifically for the "Glowing Moon". This isn't actually a remix, so there should be a connection linking this object to the two others it belongs to. Credits go to Brandon Zhun for his great moon: https://www.thingiverse.com/thing:2531838 and to enif for his very versatile flexing battery holders: https://www.thingiverse.com/thing:456900. I wanted a simple base that can hold 2 AA cells as power supply for 2 low-current LEDs for the illumination, so I designed a simple two-piece base which holds the battery case, has a 6mm hole for a standard mini rocker switch, and a snap-fit cover for easy access to the battery compartment. ***IMPORTANT*** I scaled the moon down to 75% which results in a diameter about 10cm=4" so the battery base has a diameter of 80 mm which might be a bit small for the original size of the "glowing moon" which is 140mm diameter. You can scale the base up of course but: There is a writing on top, following the circle shape of the cover, which says "The moon 1:34.740.000" which - if I did my maths correctly- is the scale factor for the 10cm-version. **If someone wants to print this and needs a different cover lettering, just drop me a line...** The illumination is made with 2 low-current LEDs in warm white colour. All clear LEDs with standard housing produce a sharp, focussed beam. This is not what we want to make the moon glow but it's easy to fix: just use a file or sandpaper and file the dome flat, you can also sand the side parts of the LEDs to make them dull. Et voila, the LED now gives diffused light. I soldered two of them in parallel (facing each other) and simply hung that wire construct inside the moon globe. Sorry I forgot to take pictures and I glued everything together meanwhile :-( I checked power consumption; the two LEDs only consume about 6mA. With two standard alkaline cells with a typical capacity of 3000mA this moon would glow for about 500hours, which is about 20 days. Note: Of course you have to print the battery holder for 2 AA cells separately: https://www.thingiverse.com/download:763280. (At first I thought it might be a good idea to integrate this into the base bottom but I think the wiring is more difficult and inconvenient then.)