After all that work on the Heat Sinks I wanted a way to monitor the temperature of each axis motor and the spindle itself.

I found these in my PC parts spare pile…

Very simple to use. Just supply 5V. There is a switch on the back for Celsius or Fahrenheit. If you happen to get ones with out the switch and don’t like Celsius just open the back and look for the pads on the board. Solder them together and it will change to Fahrenheit.

There are two varieties on eBay. One has the sensor encased in Kapton tape and the other has it epoxied into a small steel pill. This is the one I used. Since these were meant for use with PC’s and the heat sinks are also PC parts the sensor snapped right into the channel without any effort.

Now I just have to mill a fancy panel to hold them……

CNC Temperature Gauges