## Parts / BOM ##

- all the printed parts
- some M4 screws and nuts
- some M3 screws and nuts
- some compression springs
- 4 LM8UU (you can take those from your x-carriage)
- EGZM-04-75 joint from igus
- 1 standard sized servo (take a strong one, digital servo is preferred)
- 1 long servo arm
- the hotend from arcol.hu, version 4.2 for bowden extruder
- the PCB
- 1 ATMega88 (48, 168 or 328 should also work fine)
- 1 FDC8884 (MOSFET only needed if you want to use the PCB to heat the hotend)
- 1 78L05 (you don't need that if you supply your board via I2C +5V)
- 2 and 3 pin screw terminals
- 2 and 4 pin headers (1 row, tth)
- 2 6 pin headers (2 row, smd, like the ISP header)
- 20 MHz resonator
- 2 smd LEDs (red and green)
- resistors size 1206
	1x10k
	3x4k7
	2x125R (or less)
	2x500R (or more)
	1x10R
- capacitors size 1206
	2x100nF
	1x330nF
	1x1µF
	1x10µF
- one large capacitor with 10.000uF (backs the power supply of the servos, can be skipped)



## Assembly Instruction ## 

1. Print all the parts (you will need two times the BeltClamp.stl, 2_LM8UU_Holder.stl, TiltingRing_Guide.stl and TiltingRing.stl). I used a 0.9 mm nozzle, 0.5mm layer height and 0.25 infill.
2. Drill up all the holes to fit the needs
3. Assemble the tilting parts (2 tilting rings, the igus joints and hotend mountplate)
4. Mount one tilting guide to the frame
5. Attach the other guide with compression springs (placed on the screws between the guide and the frame) to the other side of the frame
6. Insert the tilting part into the tilting guides
7. Mount the servo and connect the servo arm with the tilting part
8. Solder the PCB
9. Program the PCB (burn the arduino bootloader first, than upload the program from the arduino IDE)
	For more help on this visit: 
		http://academy.cba.mit.edu/content/tutorials/09_Embedded_Programming/Programming_ATtiny_with_Arduino_IDE.html
	or	http://fab.cba.mit.edu/content/projects/fabkit/
	or	http://academy.cba.mit.edu/content/tutorials/09_Embedded_Programming/Hello_Arduino.html
10. Connect the Servo to the PCB and the PCB to the I2C of the RAMPS
11. Attach the hotend to the tilting part, fine tune everything (e.g. adjust the compression of the springs) so that it runs smooth
12. Update your printer firmware to interpret G code for the new axis
