diff --git a/docs/Assignments/extra_research/FR-1-traces.md b/docs/Assignments/extra_research/FR-1-traces.md index 118f1a0..60c0b83 100644 --- a/docs/Assignments/extra_research/FR-1-traces.md +++ b/docs/Assignments/extra_research/FR-1-traces.md @@ -19,6 +19,12 @@ the power. So I grabbed an old robot with 4 stepper motors attached but I could | 1mm | 1,85Ω | ?? | ?? | | | | | | + + * The 0,4 mm trace was the first one I tested. I started with 15 watts and it was stable at 23.8 degrees. 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 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. + ## Recommendations for next time Make bigger pads to hookup the power easier to the pcb. ![alt text](image.jpg)