JDat
/ maidenhead.cpp
Created
April 9, 2021 06:19
Calculate Maidenhed locator from lat lon. Arduino compatible.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| /* | |
| * Maps for test/validation | |
| * http://rk1at.ru/wwwloc/qthloc.html | |
| * https://dxcluster.ha8tks.hu/hamgeocoding/ | |
| * | |
| * compile: g++ -o maidenhead maidenhead.cpp | |
| * execute: ./maidenhead 56.123 17.4553 | |
| */ | |
| #include <stdio.h> // for printf() |
JDat
/ geostat_sat_calc.ino
Last active
March 2, 2023 16:31
Calculate geostationary satellite azimuth, elevation and tilt angles with arduino.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| /* | |
| * Calculate gostationary satellite | |
| * azimuth, elevation and tilt angles | |
| * with arduino. | |
| * Input data: | |
| * Geostationary satellite orbital position 25.8 degrees East (negative for West) | |
| * Your GPS coordinates as decimal degrees and fraction. | |
| * Longitude: 22.42 degrees East (negative for West) | |
| * Latitde: 58.39 degrees North (negative for South) | |
| * Result: Your azimuth, elevation and tilt (skew) angles. |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| #include <stdio.h> | |
| #include <math.h> | |
| /* | |
| * Based on https://en.wikipedia.org/wiki/Standing_wave_ratio#Relationship_to_the_reflection_coefficient | |
| * and http://rfcalculator.mobi/vswr-forward-reverse-power.html | |
| */ | |
| /* | |
| * vswr calculation from input power |
JDat
/ fix-null.diff
Created
December 31, 2018 12:53
— forked from spotlightishere/fix-null.diff
pilot-link patch
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| diff -Naur pilot-link.orig/src/pilot-read-notepad.c pilot-link-0.12.5/src/pilot-read-notepad.c | |
| --- pilot-link.orig/src/pilot-read-notepad.c 2009-06-04 08:26:19.000000000 -0500 | |
| +++ pilot-link-0.12.5/src/pilot-read-notepad.c 2017-05-07 15:12:02.000000000 -0500 | |
| @@ -166,8 +166,8 @@ | |
| width = n->body.width + 8; | |
| png_ptr = png_create_write_struct | |
| - ( PNG_LIBPNG_VER_STRING, png_voidp_NULL, | |
| - png_error_ptr_NULL, png_error_ptr_NULL); | |
| + ( PNG_LIBPNG_VER_STRING, NULL, |
JDat
/ macos-patch.diff
Created
December 31, 2018 12:52
— forked from spotlightishere/macos-patch.diff
Romeo patches
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| --- romeo-orig/types.h 2001-03-16 19:28:08.000000000 -0600 | |
| +++ romeo-0.5.0/types.h 2017-05-07 14:33:18.000000000 -0500 | |
| @@ -4,7 +4,7 @@ | |
| /******************************************************************** | |
| * Elementary data types | |
| ********************************************************************/ | |
| -#include <endian.h> | |
| +#include <machine/endian.h> | |
| #define CPU_ENDIAN_LITTLE __LITTLE_ENDIAN |