add BOM to README

README.md

@@ -20,7 +20,7 @@ configured amount of minutes (`PAUSE_MIN`), and eventually restart the cycles. T
 * When pressing the button while the winder is in standby, it will start winding.
 * When long-pressing the button while it is winding, it will return to the home position and stop winding.
 * When long-pressing the button while it is waiting for the next cycle, it will stop winding.
-* When pressing the buttong while it is waiting for the next cycle, it will start winding.
+* When pressing the buttong while it is waiting for the next cycle, it will start winding again immediately.
 
 ## LED Status
 * **Solid**: Standby
@@ -32,6 +32,28 @@ configured amount of minutes (`PAUSE_MIN`), and eventually restart the cycles. T
 
 <a href="https://git.faked.org/jan/openwatchwinder/raw/master/wiring.png"><img src="https://git.faked.org/jan/openwatchwinder/raw/master/wiring.png" alt="Wiring Diagram"  width="500"/></a>
 
+## Bill of Materials
+* [Arduino Nano v3.0](https://www.ebay.de/itm/252742123829)
+* [28BYJ-48 Stepper Motor + ULN2003A Driver](https://www.ebay.de/itm/123500100035)
+* [16mm Momentary Switch Button with LED](https://www.ebay.de/itm/331807353292)
+* [4 Neodymium Magnets (5mm x 1mm)](https://www.amazon.de/dp/B00TACKN4M/)
+* [4mm Brass Tube](https://www.ebay.de/itm/312565968067) (cut into 5 pieces of 9mm each)
+* [5 Self-Tapping Screws (2.5mm x 9.5mm)](https://www.ebay.de/itm/253942744597)
+* [5 Miniature Ball Bearings 684 (9x4x2.5)](https://www.kugellager-express.de/miniature-deep-groove-ball-bearing-684-w2-5-open-4x9x2-5-mm)
+* [Terminal Block to DC Jack Adapter (5.5x2.5)](https://www.ebay.de/itm/201994405254)
+* [5V 2A Power Supply with 5.5x2.5 plug](https://www.amazon.de/dp/B01I1LRCXW/)
+* Bolts and Nuts (**Socket Head Cap**, unless noted otherwise)
+  * 3x M3x6
+  * 1x M3x8
+  * 2x M3x10
+  * 3x M3x12
+  * 2x M3x8 (**Countersunk Head**)
+  * 12x M3 Nuts
+* 3 pieces of 4-stranded Wire (to keep things neat)
+  * Arduino -> Driver board 
+  * Arduino -> Button + LED
+  * Terminal Block -> Arduino & Driver board (split strands into 2x 5V/GND)
+
 ## Credits
 * Philipp Klimek for his [Gyrocope Watch Winder](https://www.thingiverse.com/thing:3520031)
 * [Peter D.](https://www.thingiverse.com/Dilbert0815/about) for the [initial version](https://www.thingiverse.com/thing:2763503/comments/#comment-2067423) of the code
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