If you need a third extruder with thermocouple sensor for Megatronics v2, a second for Megatronics v1 or one for your RAMPS, you can use this board. Actually, it can be hooked up with any electronics, as long as you have a free analog input.
- Easy to install
- Very small design (24x28mm)
- Compatible with Megatronics and RAMPS.
For more information on installing and configuration, see the wiki http://reprap.org/wiki/ExtThermoCouple_1.0