From 2a585ff318b6c586b639cd1392d1d443c344c89a Mon Sep 17 00:00:00 2001 From: Sam Hos Date: Mon, 23 Jun 2025 09:56:40 +0200 Subject: [PATCH] fix wrong information in research --- .../Assignments/extra_research/FR-1-traces.md | 26 +++++++++---------- docs/final_project/final_project.md | 2 +- 2 files changed, 14 insertions(+), 14 deletions(-) diff --git a/docs/Assignments/extra_research/FR-1-traces.md b/docs/Assignments/extra_research/FR-1-traces.md index fda7cf6..c66ebd6 100644 --- a/docs/Assignments/extra_research/FR-1-traces.md +++ b/docs/Assignments/extra_research/FR-1-traces.md @@ -1,7 +1,7 @@ # FR-1 Trace lengths ## The experiment -For the experiment, I used FR-1 that has a thickness of 35µm. On there I will mill 4 trace sizes (0.4 mm, 0,6 mm, 0,8 mm and 1 mm) and they all have the same length of 7.5 cm’s. The traces are seperated by 1 Cm. +For the experiment, I used FR-1 that has a thickness of 35µm. On there I will mill 4 trace sizes (0.4 mm, 0,6 mm, 0,8 mm and 1 mm) and they all have the same length of 7.5 cm’s. The traces are separated by 1 Cm. ![alt text](FR-1-Traces.jpg) @@ -28,24 +28,24 @@ But when working with higher speed frequencies the capacitance can actually mess ## Results -the power. So I grabbed an old robot with 4 stepper motors attached but I could not get them to draw more than 30 watts. So that is why the maximum in this test is 30 watts. I also had a hard time finding a way to measure the temperature of the traces because we only had a heat gun here and the laser was not the place it was actually measuring. So 0,4 mm is not measured properly. +the power. So I grabbed an old robot with 4 stepper motors attached but I could not get them to draw more than 1.6 Amperage. So that is why the maximum in this test is 1.6 Amperage. I also had a hard time finding a way to measure the temperature of the traces because we only had a heat gun here and the laser was not the place it was actually measuring. So 0,4 mm is not measured properly. -| Trace Width Trace | Resistance | Maximum safe wattage | Burn out wattage | -| :---------------- | ---------- | -------------------- | ---------------- | -| 0,4mm | 3,1Ω | 15 | 20 | -| 0,6mm 2 | 2Ω | 22 | 26 | -| 0,8mm | 2Ω | 27 | ?? | -| 1mm | 1,85Ω | ?? | ?? | -| | | | | +| Trace Width Trace | Resistance | Maximum safe Current in Ampere | Burn out Ampere | +| :---------------- | ---------- | ------------------------------ | --------------- | +| 0,4mm | 3.1Ω | 0.7 | 0.85 | +| 0,6mm | 2.7Ω | 0.9 | 1.05 | +| 0,8mm | 2Ω | 1.6 | ?? | +| 1mm | 1.85Ω | ?? | ?? | +| | | | | - * 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 0,4 mm trace was the first one I tested. I started with 0.7 amps for a few seconds. After that I increased the wattage to 0.85 amps 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. + * The 0,6 mm trace it held up well up to 0.9 amps where it started getting burn marks within a 5-10 seconds. The temperature rose to 50 degrees celsius. At 1.05 amps 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. + * 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 1.6 amps 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. - * 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. + * I could not get to the 1mm trace because the robot could not draw more than 1.6 Amperage. So thats why these are not filled in the table. ## Extra notes on temperature diff --git a/docs/final_project/final_project.md b/docs/final_project/final_project.md index e2960de..399b154 100644 --- a/docs/final_project/final_project.md +++ b/docs/final_project/final_project.md @@ -174,7 +174,7 @@ Now that I am in week 15 this has changed. The change is on the drone are going ![alt text](image-30.jpg) -I've already gotten the motors to spin in [week 10](../Assignments/week_10_output_devices/output_devices.md) using the script in there. Now I also need to modify the original VTOL driver so my ESC's can properly understand it's instructions. +I have already gotten the motors to spin in [week 10](../Assignments/week_10_output_devices/output_devices.md) using the script in there. Now I also need to modify the original VTOL driver so my ESC's can properly understand it's instructions. There's one specific function I need to change. ??? Old code