https://w.electrodragon.com/w/index.php?action=history&feed=atom&title=A4988_Arduino_CNC_shieldA4988 Arduino CNC shield - Revision history2026-07-21T23:43:46ZRevision history for this page on the wikiMediaWiki 1.37.2https://w.electrodragon.com/w/index.php?title=A4988_Arduino_CNC_shield&diff=30984&oldid=prevChao at 10:09, 12 May 20212021-05-12T10:09:38Z<p></p>
<p><b>New page</b></p><div>== BOM ==<br />
* Arduino CNC Shield PCB <br />
* 100uF 50v 8mm High Capacitors (493-3289-ND)<br />
* Jumpers (A26228-ND)<br />
* 8-Pin Female Headers(S7006-ND)<br />
* Male Headers(A26514-40-ND)<br />
* Tactile Switch (450-1650-ND)<br />
* Screw Terminal 5mm (A97996-ND)<br />
* Pololu Stepper Drivers . (Please note that the shield was designed to work with A4988 compatable polulu drivers)<br />
* 10K pull-up resistors<br />
== Schematic ==<br />
<gallery><br />
File:Arduino-CNC-Shield-Scematics-V3.XX .jpg|schematic <br />
File:Grbl Pin Layout.png | Board Layout<br />
File:Arduino-CNC-Shield-V3-Layout.jpg | Board Layout 2<br />
</gallery><br />
== GRBL Software/Firmware ==<br />
GRBL is opensource software that runs on an Arduino Uno that takes G-Code commands via Serial and turns the commands into motor signals.<br /><br />
<br />
[https://github.com/grbl/grbl The GRBL source Code is located here.]<br />
<br />
== Assembly ==<br />
<gallery><br />
File:Arduino-CNC-Shield-V3-Assemble-Step4B.jpg<br />
File:Arduino-CNC-Shield-Assemble-009.jpg<br />
File:Arduino-CNC-Shield-V3-Assemble-Step6.jpg<br />
File:Full-Micro-Stepping.jpg|How it looks finally<br />
</gallery><br />
* For the M0-M2 configuration, set is low when no jumper connected and high when jumper connected, check on A4988 board configuration for this.<br />
* A.STP and A.DIR is to copy/clone the motor setting from X, Y or Z axis to the fourth motor if you have.<br />
<br />
== First Run Debugging ==<br />
* Check all the solderings to make sure all soldered well<br />
* Adjust A4988 breakout board when necessary, and carefully install the A4988 driver board<br />
* Connect external power to power up<br />
* upload arduino firmware and test communication via serial port for gbrl, send demo G-code for testing all four axis.<br />
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[[category:Stepper Drive]]</div>Chao