A Thermometer to view the ambient temperature for your Prusa I3 Mk3.

thingiverse

To keep tabs on the ambient temperature surrounding your Prusa I3 Mk3, it's essential to have a reliable thermometer on hand. Get yourself this nifty temperature display from Adafruit - it clicks right into place in the mount and the mount securely clips onto the left Z-Axis motor. You can find more details here: https://www.adafruit.com/product/576 Connect the black wire to the negative power input and the red wire to the positive power input. The length of these wires is just perfect for this setup. To support the probe at the end, you'll need a 10-inch long piece of stiff wire. Heat one end of the wire and carefully push it into the plastic mount near the top left rear corner. Secure the probe and wire to the support wire with a few pieces of heat shrink tube.