update journal

eng_journal.md

@@ -6,13 +6,14 @@
 - Export `paperbot` dxf file : `graph-silhouette.dxf` to `OnShape`
   - Record of Tips:
     - Onshape does not read dxf file as its own saved unit. Manual settings needed when import.
-    - [!onshape_dxf_unit]()
+    - ![onshape_dxf_unit.png](https://git.uclalemur.com/roco_elec/roco_electrical/blob/ling/journal_media/onshape_dxf_unit.png)
 - Draw circuit diagram as CAD on `Onshape`
   - Multiple connection approaches:
     - `Cross` shape of `0.039 in`
     - `Cross` shape of `0.049 in`
     - `Octangular` shape of `0.049 in`
-    - [!connection_approaches]()
+    - ![connection_approaches.png](https://git.uclalemur.com/roco_elec/roco_electrical/blob/ling/journal_media/connection_approaches.png)
+    - ![actual_connection_cuts.JPG](https://git.uclalemur.com/roco_elec/roco_electrical/blob/ling/journal_media/actual_connection_cut.JPG)
   - Note and issue:
    - `Octangular` shape is the best connection approach so far, but none of approach has stable conductivity. More research is needed.
     - Scratches can be made easily when attaching microcontroller to the sheet. Potential disconnection may occur due to such scratches on metal layer.