docs

docs/Assignments/extra_research/FR-1-traces.md

@@ -20,12 +20,18 @@ the power. So I grabbed an old robot with 4 stepper motors attached but I could
 |                   |            |                      |                  |
 
 
- * The 0,4 mm trace was the first one I tested. I started with 15 watts. After that I increased the wattage to 20 watts and the trace instantly exploded and burned so I could not get temperature readings there. 
+ * The 0,4 mm trace was the first one I tested. I started with 15 watts for a few seconds. After that I increased the wattage to 20 watts and the trace instantly exploded and burned so I could not get temperature readings there. 
+
+ * The 0,6 mm trace it held up well up to 27 watts where it started getting burn marks within a 5-10 seconds. The temperature rose to 50 degrees celsius. At 29 watts the pcb burned out at 68 degrees celsius.
+
+ *  When testing the 0,8 mm trace I hit a roof with how much power I could consume with the robot. I could only get up to 30 watts and I did not manage to break the trace after powering it for a few minutes. The maximum I found before it started discoloring was 24 watts at 54 degrees celsius. This was measured after it was left on for 2 minutes.  
 
- * The 0,6 mm trace it held up well up to 27 watts where it started getting burn marks within a 5-10 seconds. The temperature rose to 45 degrees celsius. At 29 watts the pcb burned out at 68 degrees celsius.
- *  When testing the 0,8 mm trace I hit a roof with how much power I could consume with the robot. I could only get up to 30 watts and I did not manage to break the trace. The maximum I found before it started discoloring was 24 watts at 54 degrees celsius. This was measured after it was left on for 2 minutes.  
  * I could not get to the 1mm trace because the robot could not draw more than 30 watts. So thats why these are not filled in the table.
 
+
+## Extra notes on temperature
+When something keeps fluctuating in heat it will increase in size and shrink again. This can make it so your board deteriorate faster and make traces break faster. So it isn't recommended to use high wattages in pcb traces. 
+
 ## Recommendations for next time
 Make bigger pads to hookup the power easier to the pcb and maybe remove all the excess copper but that takes a super long time.
 

docs/Assignments/week_13_molding_and_casting/molding_and_casting.md

@@ -80,6 +80,7 @@ This was my second attempt which has gone a lot better.
 ![alt text](image-17.jpg)
 This is the `Mold Star 16 Fast`
 
+
 ## Making our own moulds
 To create our own moulds we first need to create a block where we can cut in.
 
@@ -129,8 +130,14 @@ Here is the fixed design with 5mm thick walls.
 ## Milling the moulds
 Milling the moulds didn't go that straight forward for me. Henk thought us how to mill the moulds and it was a bit different than milling wood. For example the residu of the milling we where going to use to melt into a new block.
 
+After we have fastened the block using the wood we need to turn down the spindle speed for 18000 RPM to 6000 RPM
+
+![alt text](image-30.jpg)
+We also needed to change this in Vcarve otherwise the toolpaths won't 't get calculated properly.
+
 To mill a wax block it first needs to be fastened. We did that using 4 pieces of wood.
 
+### Small accident
 ![alt text](image-24.jpg)
 While fastening the wood push it into the wax block. Otherwise it may get loose during milling and this can happen.
 

docs/final_project/final_project.md

@@ -171,7 +171,7 @@ I've already gotten the motors to spin in [week 10](../Assignments/week_10_outpu
 
 
 
-
+https://grabcad.com/library/readytosky-rs2205-1
 
 
 ## BOM (bill of materials)