Reply to this post!

markqvist · 2016-01-26 09:46:20

Hi there!
To introduce yourself, just make a reply to this post

If I'm not around to activate your user, you can just make two replies to this post (they have to be seperated by some amount of time), and you will automatically be approved. I apologise for the hassle, but there is so many spambots trying to fill the forum with garbage, that something like this is needed.

KJ4HDR/I8 · 2016-02-09 18:36:20

Hi!

My name is Alfonso.
I use Micromodem to log APRS traffic 24/7, it worked both with Linux AX25 setup and in normal serial KISS mode with Xastir.

markqvist · 2016-02-14 14:06:15

Hi Alfonso! Welcome here You can now post anywhere on the forum!

mik4el · 2016-02-26 20:06:18

Hi! Mikael, SA0MIK, here! Thanks for a great Libaprs and MicroAPRS! I'd like to contribute about getting a LibAPRS based tracker to work and ask some questions.

markqvist · 2016-02-29 12:09:15

Hi mik4el
Your account is now active There is a trick by the way to activate your own account without waiting for me, just write two replies in this post, and you will automatically be activated to post anywhere

WarHawk-AVG · 2016-03-05 04:40:47

Hi!

My name is Brian

KF5CIF (amateur radio callsign)

I am a tinkerer, I am trying to tweak Mark's micromodem to fit the footprint of a arduino nano...first attempts were off, the daggum A0 pin is on the wrong pin of the nano, and I left out a connection on the Digital pins (but with a simple jumper it's working...aka the LED is flashing on input from the radio, but NO TX serial packets going out) either way this is my intro...I really like Mark's build but I am way too broke (7 kids) to buy a TNC so I am stuck with a cheaper DIY version.

I do have a Baofeng UV-5R sending packets using a simple TRRS module design I got from OSHPark, also modified it and tweaked it for thruhole...but it is working with VOX on the radio and a magmount on my truck.
Check out APRS.FI to see my hits when I am tooling around in my truck...the Rx only iGate is what I was trying to use this modem for...running APRX on a RPi...but can't get the hex to send traffic out on the nano's port...receives just fine...but won't TX out.

Last edited by WarHawk-AVG (2016-03-05 04:54:32)

WarHawk-AVG · 2016-03-08 06:26:36

2nd reply : )

jremington · 2016-03-09 20:02:57

Hi,
I'm Jim Remington, interested in learning about techniques for data transmission and encoding.

sv1iw · 2016-03-20 01:15:21

Hi here is Manos Sv1IW. Interested in digital modes (among others) and lately playing with all kinds of Arduinos and Raspberry Pis

73 SV1IW

sv1iw · 2016-03-20 12:04:29

Trying the short cut way...

ipwnatlyfe · 2016-03-23 23:28:23

Hi! I'm trying to test to get this modem working with another microcontroller that will control what to send.

K6BAT · 2016-04-15 16:41:18

Hi there, I am Bret, K6BAT, in Irvine, CA. I am very interested in a DB1NTO (or whatever is in the works) kit. Looking forward to seeing a kickstartr!

Bret

SV8GXC · 2016-04-27 23:26:02

this is george sv8gxc, i hope to get access soon. I registered to this forum in order to have more chances for a quick reply since the method of sending questions on Marks personal email is slow and not the best option. thanks.

regards

sv8gxc

markqvist · 2016-04-28 12:51:12

Hi SV8GXC
Your profile is activated Yeah, I know I'm not always the fastest to answering mails, but I do get through them eventually. So sorry for any delays in that department!

kk6oos · 2016-05-17 21:12:31

Hi!

My name is Lito from Anaheim, CA.. Thanks for the add.

73,

Lito de KK6OOS

Snowman · 2016-11-16 22:29:17

Howdy !

Snowman here, more official LB4NH but thats kinda recent, long time electronics geek, new HAM and facinated by APRS. already built a working tnc, connected to pc or android device by bluetooth. wishing to be of assistance and inspiration

whemming · 2016-12-04 20:43:55

Hi my name is Lee. I'm currently building an APRS Track and plan to use LibAPRS. Would like to be added to get help on my project.

Thanks
w4whl
73

whemming · 2016-12-05 01:53:17

Second post

KC1AT · 2017-01-05 12:46:34

Hi All

Name is Don....I was into APRS years ago but dropped it when I got into the HAM digital modes. Just getting into Arduino stuff now...I'm a total hacker and novice at this but love to play around with code and hardware...Looking forward to building a system similar to Stanley Seow ( 9W2SVT / KG7OOY ) SVTrackR. Just found this site and am seeing a lot of extras added to the original hardware architecture and code....YIKES....

Plugging through it trying to understand it all......hahahaha

73 de KC1AT

don

whemming · 2017-01-06 20:22:01

KC1AT wrote:

Hi All
Name is Don....I was into APRS years ago but dropped it when I got into the HAM digital modes. Just getting into Arduino stuff now...I'm a total hacker and novice at this but love to play around with code and hardware...Looking forward to building a system similar to Stanley Seow ( 9W2SVT / KG7OOY ) SVTrackR. Just found this site and am seeing a lot of extras added to the original hardware architecture and code....YIKES....
Plugging through it trying to understand it all......hahahaha
73 de KC1AT
don

Hello Don,

This board seems to not be very active at the moment. I like you was into APRS many years ago before getting heavy into HF. I got bored with CQ, CQ, 59 59. Returning to my original joy of hardware/programming. I will be monitoring board and will be glad to help where I can.

tcarwash · 2017-01-07 23:26:24

Hi Everyone,

My name is Tyler, I'm pretty new to APRS and ham radio in general, callsign is KI7IQE, located in Vancouver, Washington.

KC1AT · 2017-01-08 15:15:29

Hi Whemming

yeah that's exactly my HF experience....totally bored by the HF gang. I find the higher the frequency the better the crowd and contacts .... My last programming experience was Fortran IV in the late 60's...so I'm VERY stale.

Thanks for the offer of help...maybe one question you can answer...My APRS set up is a pair of Nanos one running the GPS and the other the modem....is that adequate ??? Not looking for the latest set up....just something that'll work...I can fancy it up later after I understand some of the software...

thanks again
don

whemming · 2017-01-08 16:42:34

KC1AT wrote:

Hi Whemming
yeah that's exactly my HF experience....totally bored by the HF gang. I find the higher the frequency the better the crowd and contacts .... My last programming experience was Fortran IV in the late 60's...so I'm VERY stale.
Thanks for the offer of help...maybe one question you can answer...My APRS set up is a pair of Nanos one running the GPS and the other the modem....is that adequate ??? Not looking for the latest set up....just something that'll work...I can fancy it up later after I understand some of the software...
thanks again
don

Yes two Nano's will work. My first setup was exactly that. It all depends on what you want to do. My issue was the nano was just too slow for what I wanted to do. I'm making a DIY HT with both voice, touchscreen, GPS, and APRS. I needed a bunch of serial UART's. I tried the nano using software serial, but just didn't work well. So I upgraded to a Mega. I still have a Nano hooked up to my base as an APRS receive only igate. I found the nano couldn't handle much more that decode and encode APRS. If your goal is to make a simple tracker, 2 nano's will be fine. If you are doing nothing more than LibAPRS on one and handling GPS on the other, you should be fine. If doing just a simple tracker with 2 nano's I would just use the simplemodem precompliled hex file vs libaprs. It will save you tons of programing. Just remember APRS uses DDMM.MM format, not NEMA DD.DDDD for GPS.

There is an off the top of my head sketch for the second nano. This will setup modem/GPS, do the conversion, and send a location packet every 20 min.

#include <SimpleTimer.h>
#include <TinyGPS++.h>
TinyGPSPlus gps;

void setup() {

// Set up serial port
Serial.begin(9600); //GPS Serial
Serial1.begin(9600); //Modem Serial
timer.setInterval(1200000, sendlocation);
//Setup Modem. Send all the software serial configuration commands.
Serial1.println("cW4WHL"); //Send Callsign to modem
etc.
etc.
etc.
}

void loop() {

processgps();
timer.run();
}

void processgps() {

while (Serial.available())
{
gps.encode(Serial.read());

}

float convertDegMin(float decDeg) {

float DegMin;

int intDeg = decDeg;
decDeg -= intDeg;
decDeg *= 60;
DegMin = ( intDeg * 100 ) + decDeg;

return DegMin;
}

void sendlocation() {
if (gps.location.isUpdated())
{
String adddigitlat, adddigitlon, latdir, londir;
float latitude = convertDegMin(gps.location.lat());
float longitude = convertDegMin(gps.location.lng());

if (latitude < 0) {
latitude = -latitude;
latdir = "S";
} else {
latdir = "N";
}
if (longitude < 0) {
longitude = -longitude;
londir = "W";
} else {
londir = "E";
}
if (longitude <= 9999.99) {
adddigitlon = "0";
} else {
adddigitlon = "";
}
if (latitude <= 999.99) {
adddigitlat = "0";
} else {
adddigitlat = "";
}
String clat = adddigitlat + (String)latitude + latdir;
String clon = adddigitlon + (String)longitude + londir;
//
//Send lat/lon to modem
//
Serial1.println("lla"+clat);
Serial1.println("llo"+clon);
Serial1.println("@Dons Tracker"); //Tell modem to send location packet
}

whemming · 2017-01-08 17:15:32

Start new thread if you want to discuss further, we probably shouldn't clog up introduction thread.

William W4WHL

mumrah · 2017-01-18 15:13:50

Hello!

My name is David, KM4NKU. Been a Ham for about a year and recently been playing around with APRS on my RaspberryPi. Inspired by Mobilinkd's post on an Arduino KISS TNC, I sought to put one together for use with Xastir. Well, I kind of got it working, but then yesterday @WarHawk-AVG pointed me to this project. Let's just say I'm terribly impressed! I'm also interested in a Arduino Nano build.

Here are some packets from the TNC I had working on the breadboard yesterday:

2017-01-17 21:41:52 CST: KM4NKU>APX204,KD4PBS-3*,WIDE2-1,qAR,WB4P-10:=3554.6 N/07830.9 W-PHG2000XASTIR on Raspberry Pi
2017-01-17 21:45:20 CST: KM4NKU>APX204,W4UNC-3,WIDE1*,WIDE2-1,qAR,WB4P-10:=3554.6 N/07830.9 W-PHG2000XASTIR on Raspberry Pi
2017-01-17 21:47:12 CST: KM4NKU>APX204,W4UNC-3,WIDE1*,WIDE2-1,qAR,WB4P-10:=3554.6 N/07830.9 W-PHG2000XASTIR on Raspberry Pi

and for a while I was decoding packets, but that stopped working.

Hopefully I'll be trying the MicroModem firmware tonight

Unsigned.IO Forum

#1 2016-01-26 09:46:20

Reply to this post!

#2 2016-02-09 18:36:20

Re: Reply to this post!

#3 2016-02-14 14:06:15

Re: Reply to this post!

#4 2016-02-26 20:06:18

Re: Reply to this post!

#5 2016-02-29 12:09:15

Re: Reply to this post!

#6 2016-03-05 04:40:47

Re: Reply to this post!

#7 2016-03-08 06:26:36

Re: Reply to this post!

#8 2016-03-09 20:02:57

Re: Reply to this post!

#9 2016-03-20 01:15:21

Re: Reply to this post!

#10 2016-03-20 12:04:29

Re: Reply to this post!

#11 2016-03-23 23:28:23

Re: Reply to this post!

#12 2016-04-15 16:41:18

Re: Reply to this post!

#13 2016-04-27 23:26:02

Re: Reply to this post!

#14 2016-04-28 12:51:12

Re: Reply to this post!

#15 2016-05-17 21:12:31

Re: Reply to this post!

#16 2016-11-16 22:29:17

Re: Reply to this post!

#17 2016-12-04 20:43:55

Re: Reply to this post!

#18 2016-12-05 01:53:17

Re: Reply to this post!

#19 2017-01-05 12:46:34

Re: Reply to this post!

#20 2017-01-06 20:22:01

Re: Reply to this post!

#21 2017-01-07 23:26:24

Re: Reply to this post!

#22 2017-01-08 15:15:29

Re: Reply to this post!

#23 2017-01-08 16:42:34

Re: Reply to this post!

#24 2017-01-08 17:15:32

Re: Reply to this post!

#25 2017-01-18 15:13:50

Re: Reply to this post!

Board footer