FintasticMan · January 1, 2023 22:52 · Jan 1, 2023 · Jan 1, 2023 · Jan 1, 2023 · Jan 1, 2023
diff --git a/batt_optimisation.md b/batt_optimisation.md
@@ -7,8 +7,13 @@ I then used the `itctl watch batt` command to monitor when the battery percentag
 
 I used the following formula to convert the percentages back to the voltage: `3200 + (reported_charge * 10 + 5) * (4180 - 3200) / 1000`.
 This is just a linear interpolation of `reported_charge + 0.5` between 3200 mV and 4180 mV (min. and max. voltages respectively).
-The reason for the + 0.5 is because the new percentage gets updated when it changes, so the actual voltage will be in the upper range of the possible voltages for that charge level.
+The reason for the + 0.5 is that the Bluetooth characteristic gets updated when the percentage changes, so the actual voltage will be in the upper range of the possible voltages for that percentage.
 I also normalised the time between 0 and 100, and inverted that to get the "best theoretical charge level".
 
 I then used some code to go through all possible values in a linear approximation using 6 points.
 I calculated the loss between the linear approximation and the best theoretical charge from all the tests, and chose the linear approximation with the lowest loss.
+
+# Results
+
+The results are shown in the CSV files below.
+The values where the watch reported 100% charge have been removed, as it is not possible to accurately calculate the voltage for those.
diff --git a/batt_optimisation.md b/batt_optimisation.md
@@ -6,6 +6,8 @@ I then set up a constant load on the PineTime, either with the heart rate monito
 I then used the `itctl watch batt` command to monitor when the battery percentage advertised by the watch changed.
 
 I used the following formula to convert the percentages back to the voltage: `3200 + (reported_charge * 10 + 5) * (4180 - 3200) / 1000`.
+This is just a linear interpolation of `reported_charge + 0.5` between 3200 mV and 4180 mV (min. and max. voltages respectively).
+The reason for the + 0.5 is because the new percentage gets updated when it changes, so the actual voltage will be in the upper range of the possible voltages for that charge level.
 I also normalised the time between 0 and 100, and inverted that to get the "best theoretical charge level".
 
 I then used some code to go through all possible values in a linear approximation using 6 points.

diff --git a/batt_optimisation.md b/batt_optimisation.md
@@ -3,10 +3,10 @@
 To gather the battery data, I ran the 3 PineTimes running stock InfiniTime 1.11.
 I connected them to a Linux device with [ITD](https://gitea.arsenm.dev/Arsen6331/itd).
 I then set up a constant load on the PineTime, either with the heart rate monitor on and the torch on max, or with the heart rate monitor and screen both off.
-I then used the `itctl watch batt` command to watch when the battery percentage advertised by the watch changed.
+I then used the `itctl watch batt` command to monitor when the battery percentage advertised by the watch changed.
 
 I used the following formula to convert the percentages back to the voltage: `3200 + (reported_charge * 10 + 5) * (4180 - 3200) / 1000`.
-I also normalised the time between 0 and 100, and inverted that to get the best theoretical charge.
+I also normalised the time between 0 and 100, and inverted that to get the "best theoretical charge level".
 
 I then used some code to go through all possible values in a linear approximation using 6 points.
 I calculated the loss between the linear approximation and the best theoretical charge from all the tests, and chose the linear approximation with the lowest loss.
diff --git a/batt_optimisation.md b/batt_optimisation.md
@@ -0,0 +1,12 @@
+# Methodology
+
+To gather the battery data, I ran the 3 PineTimes running stock InfiniTime 1.11.
+I connected them to a Linux device with [ITD](https://gitea.arsenm.dev/Arsen6331/itd).
+I then set up a constant load on the PineTime, either with the heart rate monitor on and the torch on max, or with the heart rate monitor and screen both off.
+I then used the `itctl watch batt` command to watch when the battery percentage advertised by the watch changed.
+
+I used the following formula to convert the percentages back to the voltage: `3200 + (reported_charge * 10 + 5) * (4180 - 3200) / 1000`.
+I also normalised the time between 0 and 100, and inverted that to get the best theoretical charge.
+
+I then used some code to go through all possible values in a linear approximation using 6 points.
+I calculated the loss between the linear approximation and the best theoretical charge from all the tests, and chose the linear approximation with the lowest loss.
diff --git a/pt1_intensive_load.csv b/pt1_intensive_load.csv
@@ -0,0 +1,27 @@
+"time (s)","voltage (mV)","theoretical best charge (%)","original reported charge (%)","AlexXZero reported charge (%)","my reported charge (%)"
+82.315383,4135,99,95,95,95
+682.227791,4096,96,91,92,91
+1282.139351,4067,92,88,89,88
+1882.299515,4028,88,84,86,84
+2482.211231,3998,85,81,83,80
+3082.122718,3979,81,79,82,79
+3682.283310,3949,77,76,79,74
+4282.195255,3910,74,72,75,68
+4882.106557,3890,70,70,73,65
+5482.267185,3861,66,67,68,60
+6082.181445,3841,63,65,65,57
+6682.091274,3812,59,62,60,53
+7282.251875,3792,55,60,57,50
+7882.163279,3773,52,58,53,46
+8482.074691,3763,48,57,52,41
+9082.235630,3734,44,54,42,27
+10282.307539,3724,37,53,37,22
+11482.131390,3694,29,50,24,16
+12682.203492,3675,22,48,21,13
+14482.187406,3655,11,46,18,9
+15082.098751,3636,7,44,15,6
+15682.259415,3587,4,39,8,2
+16282.171473,3557,0,36,5,1
+16882.082599,3479,0,28,0,0
+17482.243498,3312,0,11,0,0
+18082.155006,3204,0,0,0,0
diff --git a/pt1_light_load.csv b/pt1_light_load.csv
@@ -0,0 +1,92 @@
+"time (s)","voltage (mV)","theoretical best charge (%)","original reported charge (%)","AlexXZero reported charge (%)","my reported charge (%)"
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diff --git a/pt2_intensive_load.csv b/pt2_intensive_load.csv
@@ -0,0 +1,28 @@
+"time (s)","voltage (mV)","theoretical best charge (%)","original reported charge (%)","AlexXZero reported charge (%)","my reported charge (%)"
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diff --git a/pt2_light_load.csv b/pt2_light_load.csv
@@ -0,0 +1,95 @@
+"time (s)","voltage (mV)","theoretical best charge (%)","original reported charge (%)","AlexXZero reported charge (%)","my reported charge (%)"
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diff --git a/pt3_intensive_load.csv b/pt3_intensive_load.csv
@@ -0,0 +1,25 @@
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