This is a base with battery holder for the "Glowing moon".
This isn't actually a remix, but there should be a linking to the two objects this thing belongs to, to make sense:
Credits go to Brandon Zhun for his wonderful 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 for the moon which 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.
*IMORTANT** 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 correct- 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 the standard housing with the dome shape however produce a sharp, focussed beam. This is not what we want to make the moon glow, but its 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 (faceing 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 AAcells 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 unconvenient then.)
With a well calibrated printer, the cover snaps snuggly into the grove on the base part.
Solder your LEDs, pull the wire trough the hole in the small part of the moon. Fix that wire with hot glue, then stick the wire through the hole in the base cover piece. Glue the moon with hot glue on top of the cover piece. Then wire your battery holder, the switch and press the cover gently on the base!