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RepRap Sanguinololu Electronics - Plug&Play Set

This is a brand new set of RepRap Sanguinololu electronics (revision 1.2), which works with RepRap Mendel type machine (Classic, Prusa, Huxley and similar). It can also be used in other hardware configurations if needed.

This set is one of the most advanced designs available today (!). It provides very quiet operation (barely noticeable), as it uses microstepping (set to 1/16 by default). It has integrated 2 thermistor support, and 2 power mosfets for driving extruder heater and heated bed (even up to 10A!). Set is driven by ATmega644P chipset, which is programmed with standard Arduino bootloader and latest Sprinter firmware (with ramping acceleration).

All SMT elements on those boards were placed and soldered in a factory. Through hole components were soldered manually, then firmware was uploaded and each board was fully tested (via RepSnapper software). 

Parts included:

1x Sanguinololu Motherboard rev 1.2
4x A4983 stepper controller (Stepstick)
3x mechanical WLK-2MINI switches, for use as endstops (as shown on second picture)
3x endstop cable + 3 pin plug
6x 4 pin plugs for connecting stepper motors and heaters
2x 100K glass-beaded thermistor for extuder and heated bed temperature readout
2x thermistor cable+2 pin plug
12x shunts for StepStick motor driver configuration (by default all are placed on pins, so 1/16 microstepping is used)
as a free bonus I am adding 3x opto endstop PCB, in case you want to use opto endstops instead of mechanical ones

Everything is packaged in anti-static plastic bags.

Testing procedure :
- Serial communication check
- stepper drivers check, driving motors under different loads (regulated via potentiometer)
- thermistors check
- heaters check (heating extruder barrel + heating 4 power resistors for heated bed [10 amps] )

This is fully functioning set, that will enable you to 3D print with high quality and high speed - regardless of which machine configuration you're using. It is recommended to use Skeinforge to get good results.
 
If you have any questions feel free to ask me! Enjoy the shopping! :-)

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F.A.Q.

PS. If you don't know how to start, you can read some sketchy basic steps below, to save you some time finding it yourself :

- first, go to http://reprap.org/wiki/Sanguinololu and familiarize yourself with usage notes (bottom of the page)
- prepare power supply - if you're using ATX one, you have to hack it before you start (push U-shaped wire to large ATX connector, connect green and black wires). Make sure fan rotates and measure output voltage on any on yellow/black wires - should be 12V.
note : for heated bed support make sure it can output at least 300W. If you channel lots of current via heated bed mosfet (say 10A), make sure you attach radiator to it, otherwise it will get very hot!
- connect your stepper motors to stepper controllers - first coil to 1A and 1B, second to 2A and 2B (more about wiring steppers here: http://reprap.org/wiki/StepperMotor). Use cable housings provided.
- plug small square 4 pin ATX connector and USB cable (A-B). Do not plug rectangular 4 pin Molex connector unless you're printing from SD card.
- start the power, small LED should light up
- run your host software (RepRap host, RepSnapper, ReplicatorG, Pronterface etc), type your COM port and connect. Make sure connection speed is 115200 (Sprinter firmware operates on that speed)
- go to the tab that controls the axis (XYZ), and try to jog them
- connect endstops and test them as described in Sanguinololu wiki (http://reprap.org/wiki/Sanguinololu).
- connect thermistors to E-THERM and B-THERM pins (use cables provided), after that you should see temperature being read from extruder controller every 1-2 seconds.
- connect heaters to 4-pin pin headers on the left - make sure you use 2 wires per + and 2 wires per GND connection (otherwise they might melt).
- if your machine differs from standard one described on http://reprap.org/wiki/Prusa_Mendel wiki page, you  need to reupload the firmware with different steps per mm settings. Basically you need to change configuration.h file, replacing values in following line :
float axis_steps_per_unit[] = {10*16, 10*16, 200*16/1.25,1.8*16};
with your steps per mm values. 16 multiplier is a microstepping factor - you can change it according to your jumper settings too (however 16 is a recommended value)

If something doesn't work, check the cables, or cable plugs and make sure they are well connected and there are no shorts.

After that, you can start enjoying fast and quiet 3D printing ! :-)