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      <page pageid="892" ns="0" title="RepRap Arduino Mega Pololu Shield">
        <revisions>
          <rev contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">==Overview==
[[File:im130624002_1.jpg|400px|right|thumb]]
This is the bare PCB of RepRap Arduino Mega Pololu [[Shield]].
 
According to [http://reprap.org/wiki/Arduino_Mega_Pololu_Shield RepRap wiki about this shield]. RepRap Arduino Mega Pololu [[Shield]], or RAMPS for short. It is designed to fit the entire electronics needed for a RepRap in one small package for low cost. RAMPS interfaces an Arduino Mega with the powerful Arduino MEGA platform and has plenty room for expansion. The modular design includes plug in stepper drivers and extruder control electronics on an Arduino MEGA [[shield]] for easy service, part replacement, upgrade-ability and expansion. Additionally, a number of Arduino expansion boards can be added to the system as long as the main RAMPS board is kept to the top of the stack.

Go shopping [http://imall.iteadstudio.com/im130624002.html RepRap Arduino Mega Pololu Shield]
==Open Source Files==
*Reference: http://reprap.org/wiki/Arduino_Mega_Pololu_Shield

===Eagle Files===
*[[Download]] it from here: http://reprap.org/wiki/File:ArduinoMegaPololuShield.zip

===Eagle Libraries===
*[[Download]] it from here: http://reprap.org/wiki/File:RepRapjr.lbr

===Schematic===
Current schematic shown. For older versions click the image. Click again for full resolution. 
[[File:Arduinomegapololushieldschematic.png|800px]]</rev>
        </revisions>
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      <page pageid="889" ns="0" title="Reprap StepStick">
        <revisions>
          <rev contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">==Overview==
[[File:im130622001_1.jpg|400px|thumb|right]]
This is an Allegro A4983 / A4988 x4 breakout board for Sanguinololu. It can be snapped apart at the score in case of Allegro failure, and replaced with another or a Pololu. Snap all 4 apart and get a pin-compatible clones for use on boards like RAMPS or Gen7.

Now this is not for the iron wielding solderer. All parts are SMT, and somewhat small - there are some 0402 sized packages. Not to mention the Allegro's thermal pad - a solder pad on the bottom of the chip - can't be soldered without an iron of magic.

Go shopping[http://imall.iteadstudio.com/im130622001.html Reprap StepStick]

==Open Source Files==
*Reference: http://reprap.org/wiki/StepStick
===Gerber file===
*Eagle files here: https://github.com/mosfet/StepStick
*[http://blog.iteadstudio.com/how-to-export-gerber-files-from-eagle/ How to Export Gerber files from Eagle]

===Schematic===
[[File:IM130622001_schematic.png|500px]]
===BOM===
{| class=&quot;wikitable&quot;
| align=&quot;center&quot; style=&quot;background:#f0f0f0;&quot;|'''Item'''
| align=&quot;center&quot; style=&quot;background:#f0f0f0;&quot;|'''Package'''
| align=&quot;center&quot; style=&quot;background:#f0f0f0;&quot;|'''Value'''
| align=&quot;center&quot; style=&quot;background:#f0f0f0;&quot;|'''Value'''
| align=&quot;center&quot; style=&quot;background:#f0f0f0;&quot;|'''Tolerance'''
| align=&quot;center&quot; style=&quot;background:#f0f0f0;&quot;|'''Voltage'''
| align=&quot;center&quot; style=&quot;background:#f0f0f0;&quot;|'''Position'''
| align=&quot;center&quot; style=&quot;background:#f0f0f0;&quot;|'''Note'''
|-
| Capacitor||402||0.1uf||||10%||16V||C1, C2, C5, C6||16V capacitor for 12V maximum voltage; use higher voltage capacitors for higher voltage applications, max 35V
|-
| Capacitor||402||0.22uf||||10%||16V||C4, C7||16V capacitor for 12V maximum voltage; use higher voltage capacitors for higher voltage applications, max 35V
|-
| Capacitor||1206||4.7uf||||10%||16V||C3||16V capacitor for 12V maximum voltage; use higher voltage capacitors for higher voltage applications, max 35V
|-
| Motor driver chip||QNF||||||||||IC1||Allegro A4988
|-
| Resistor||805||0.2ohm||0.25W||1%||||S1,S2||
|-
| Resistor||402||10k||||10%||||R4||
|-
| Resistor||402||20k||||10%||||R1||
|-
| Resistor||402||100k||||10%||||R2, R3||
|-
| Trimpot||3mm||10k||||||||T1||
|}</rev>
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