This controller board has:
One Thermocouple input
One power mosfet output
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This board is one channel PID temperature controller for 3D printers. This board uses thermocouple sensor in order to measure the temperature. Now the board uses the MAX31855K instead of the MAX6675, so it can measure a wider temperature measurement range. Works with any K type thermocoupl and capable of reading temperatures between -200°C to +1350°C output in 0.25 degree increments – note that K thermocouples have about ±2°C to ±6°C accuracy
If you have a desktop CNC machine you can easily convert your CNC to a 3D printer with this controller board. You can also handle your temperature related tasks of your 3D printer with this board without the need of a computer. You can set the extruder temperature or the heated bed temperature with on board trimpot. You can read digitally your setting temp and sensor values from the Seven Segment Display. You can directly connect your heating element to the board. High Power MOSFET can handle your current requirements. Please note that this board has one channel PID temperature controller. You can use it for extruder or heated bed. If you need to control both you need to buy two of this boards.
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How to use:
After making proper connections by using the picture above you can set the temperature by pressing the on board set temp button. Press and hold the button and adjust the temp setting trimpot. You will see the seven-segment display change accordingly. Turning trimpot in clock wise while pressing the button will increase the set temperature. Turning it the other way will decrease the set temperature. After you see your desired value on seven segment display just release the button. The controller will try to keep the temperature as close as possible to the set temp value.
Suitable Heating Element:
12V 40W Ceramic Cartridge Wire Heater
Suitable therocouple Sensor