Controller 2.2 Assembled 3D Printer Diy Kit RepRap Extruder

Quick Detail:

RepRap Extruder Controller 2.2 assembled
1.High quality
2.100% brand new
3.Competetive price

Description:

This board is a combination of the PWM Driver Board, DC Motor Driver Board, Temperature Sensor Board, RS485 comms, and an Arduino! All on one board. It has screw terminals for easy hookup, as well as a power jack for power and an IDC header for the rotary encoder. Its an all-in-one solution for controlling an extruder. The RepRap configuration is shown at the top, the MakerBot one underneath.

Features:

1. Onboard atmega168 - program it just like an Arduino because it is an Arduino.

2. 3 x MOSFET drivers for controlling up to 14A @ 12V. Perfect for heaters, fans, solenoids, etc.

3. 2 x H-Bridges capable of up to 2A each. Control 2 motors, or control one stepper motor.

4. A temperature sensor circuit for reading the standard 100K thermistor.

5. RS485 connection for noise-free communications with the motherboard.

6. IDC header for connecting a Magnetic Rotary Encoder.

7. Polarized ICSP header for simple, easy programming.

8. It mounts directly to the Pinch Wheel Extruder!

9. It is plug and play with the RepRap Motherboard.

WARNING!! This board produces an awfull whine in the extruder motor if you use a stepper-motor due to the fact that it has been designed for DC motors and a hack is applied to use it as a stepper controller .First off, running the extruder stepper of the extruder board is a horrible hack. It works if tuned right, but you'll get a lot less grief if you get a pololu stepper controller and use that to drive the extruder stepper instead. The "extruder board" is actually designed to control a DC motor, and though you CAN use that to control a stepper motor instead, it doesn't work all that well (among other things there's the audible whine you've noticed, that'll go away if you use a proper stepper driver instead) Anyhow, there is on the atmel a agnd that is separate from dgrnd. (though the datasheet does specify that it cannot be more than Hrm.. Something.. from the dgnd) Do you have a link to the schematic for the extruder board that you're using? I'd expect that the schematic shows that they're already linked. Suggestions:

Check the datasheet for your processor (atmel168 on the extruder board, I believe) This'll give you the pin numbers. Check the silkscreen (white numbers printed on the board itself) The pins might be labeled or even broken out. Check the schematic for the board (possibly they are already connected, probably have to refer to the datasheet to be sure of what all those pin numbers mean) This'll show if these pins are connected already, and give you a hint as to what they're connected to if not eachother, make it easier to do something about it.