FilamentFuser

Arduino Shield and Sketch for a 3D Printer Filament Fuser

The shield is stacked between an Arduino UNO R3 and the Adafruit LCD Shield Kit w/ 16x2 Character Display (https://www.adafruit.com/product/772)

Shield Hardware

Parts List:

• Arduino Prototype Shield
• MP1584EN Step-Down Power Regulator Board
• N-MOSFET IRLZ34N
• LED 3mm, red
• Resistor 100kOhm / 1% (2*)
• Resistor 680Ohm / 1%
• Resistor 10Ohm / 1%
• Power connector, matching the 12V power supply
• Pinheader 1x2 and jumper
• Pinheader 1x2, 90°, (3*), for fan, heater and temp sensor
• Power supply, 12V, 7.5A

Design

Requirements:

• Control temperature [R1]
• Show set and current temperature [R2]
• Provide power to the cooling fan [R3]
• Secure operation [R4]

Features:

• Display [F1] -> [R2]
• PID controller [F2] -> [R1]
• Arduino based [F3] -> [F2]
• Input Voltage 12V DC [F4] -> [R3]
• 5V DC Voltage Regulator [F5] -> [R1], [R2], [F3]
• Auto cooldown after configured time [F6] -> [R4]
• Cooling fan is hard-wired, no software control [F7] -> [R4]
• MOSFET driver for heater [F8] -> [R1]

Software Functions:

• Show set and current temperature
• Set temperature
• Start fusing procedure (heat up)
• Stop fusing procedure after given time (cool down)
• Select from presets (Temperature and Fusing time)