Mod to decrease temperature on the UP! mini (or Plus) printer.

For every increase in number on the wheel I get 5C less on the print head. 0 = no change, 9 = about -45C

Needed:

• printed STL for mod case
• Cherry PAAA3000 decimal switch (Farnell SKU 1180017)
• JST BXH-001T-P0.6 crimp terminal, 1 pc. (Farnell SKU 1516301)
• 1.8ohm resistors (0805 or 0603)
• some cable

Wire the resistors in series on the push wheel, one wire gets from thermistor to 0 pin and one goes from common to printer.
Depending on the number selected, the common lead picks up on the respective number.

Wiring diagram and other details from the forum where I got inspired.
http://www.pp3dp.com/forum/viewtopic.php?f=28&t=23922

I took out one terminal from the connector then put in the wire (soldered the end before) and slid over a heat shrink tube. Electrical tape would also work but it can come off due to heat and movement of the head.

The JST BXH-001T-P0.6 crimp terminal was used inside the connector crimped to the returning wire from the mod.

Remember to test the device with a multimeter before installing.

On the side of the casing are two holes (3mm dia, 2mm deep). I used 2 pcs. 3mm dia 2mm height magnets to fix the mod to the outside of the UP! enclosure.