bill of materials for v0.3

hardware/Hardware.md

@@ -1,14 +1,20 @@
 # Hardware
 
+### sfy-v3.0
+
+Not ready yet, all components on PCB.
+
 ### sfy-v2.0
 
 Version based on Notecarrier A and with built-in IMU.
 
-### sfy-v0.3 and sfy-v0.1
-
-The first version of the SFY. Also with a PCB which can be imported into
-EasyEDA.
+### sfy-v0.3 (with PCB)
 
 Instructions for building with PCB: [SFY Tutorial v0.3](https://docs.google.com/document/d/1EXDII7zj-Mx41jhLi-a5mA7CSWCcb-kMaHQw_yury68/edit?usp=sharing)
+
+Bill of materials: [spreadsheet](https://docs.google.com/spreadsheets/d/1sBdWiWR-qt-WOEdiuh2wcE22aZ7sVvrVJG4wyxyPVqI/edit?usp=sharing).
+
+## sfy-v0.1 (no PCB)
+
 Instructions for building and assembling without PCB:
 [Ocean Buoy to Measure Waves and Drift using Low-Power Cellular](https://www.hackster.io/gaute-hope/ocean-buoy-to-measure-waves-drift-using-low-power-cellular-16ad09). Bill-of-material is available as a [spreadsheet](https://docs.google.com/spreadsheets/d/e/2PACX-1vRE62P6-pCVzig-hSsqVcr2DABZ5LlB4lt1ZFfrct_tdcxoljO3zjmq7vGT1-jjqNiVCXLdns6XSkHF/pubhtml?gid=0&single=true).