Dear Mr. Hart,

When I read about your reverse geocaching puzzle I was amazed. Not only by the articles on it and you by many websites that I follow, but by the amount of thought you put into the project. I would very much like to continue a conversation about the project and the use I may have for it in my future plans. If you would be willing to discuss this further, please email me at either timothy.j.engler08@business.colostate.edu or at noodlengler@hotmail.com. Thank you for your time and consideration. Good luck with any future projects!

Sincerely,

Tim Engler

Some GPS modules seem to have the option of a wire antenna, typically just a couple of inches, I think. It seems to me that this would give a nicer appearance especially if the antenna were glued into a small slot routed into the box at a corner or something. On the original box with the elephant I suppose it could go in the carved depression above or below the elephant.

Very intriguing project and story! Thank you for the great libraries, as well.

recently i started trying to make my own. i have a gps module and am able to get a signal and my coordinates. i was wondering what calculation you used to determine the distance. my basic code is from this website http://www.arduino.cc/playground/Tutorials/GPS which i have modified to store the lat and lon as floats. any help would be greatly appreciated.

Mikal,
Could you possibly email me some further details for the construction of the reverse geocache please. I want to construct one for use in expedition and orienteering exercises with a cadet unit i work with.
Thanks
Ian

Mikal
I would love to build one of these as well. Could you please email me some info on what to do with the parts you have listed on The Reverse Geocache™ Puzzle Box page? I would like to know just how complicated this is before I commit to buying the hardware.

Thanks
Paul S

Is there anywhere/one in Australia making these boxes that we could purchase
We really only need the electronics as we could fit it to our own box

hı mikal My name is halil ibrahim köklü
I make magic box 15 step magic box I want to sale magic box I want to help
for me your help please help me

Hi Mikal I plan on building one of your puzzle boxes as a gift for my friends wedding. I would very much like to buy one of your custom shields

Mikal,

Thanks for the several great libraries. I made some mods to TinyGPS to enable fix notifications.

I needed this for consistant GPS time syncing.

The mods are published here:
http://code.google.com/p/clockthree/downloads/list

or directly from the source:
http://code.google.com/p/clockthree/source/browse/#svn%2Ftrunk%2Flibraries

Thanks again,
Justin

WOW, your reverse geocache puzzle is such a dazzling idea, AND you had the brains to build it. I think your mind is the biggest “gem” of this page!!!!

Thanks for the great work you develop, I was wondering if you have not thinking about developing the library TinyGPS for a Chipkit, would appreciate it fully.

Thank you.

This is really fantastic stuff! I would love to see you put your work in Github so that I can stay up to date with changes.

Hi Mikal, I’m using your excellent SoftSerial library. I need to read multiple ports at the same time. Bandwidth is not an issue as I might not even send the data to the PC. I only need to proccess some 400bps on each port. Is it possible to remove the multiple instances limitation? I’m not afraid of getting into the source code and try it for myself, I just want to know if it is doable…

Can I buy a reverse geocache from you or somewhere? Building something like this isn’t my cup of tea.

Hi Mikal,

I’d like to buy a reverse geocache. How can I do that? :-)

Good day Mikal, I am looking to get one of your reverse boxes. I sent you an email as well as this note. Let me know

Thanks

~rodger

Good Day My friend and I are designing an marine autopilot and need to parse magnetic variation out of the GPRMC sentence. It appears that you are not parsing that when I look at the library. Is it possible to rewrite the libraries to include it without upsetting you!

Mikal –

I was playing around on Creative mornings and saw that you were going to speak this month there in Austin. Congratulations and its exciting to see my old neighbor be a part of such a great event. I hope all is well in the neighborhood and the family is great. Feel free to reach out any time. Nashville is going strong and Dakota is happy as she can be. Take care and keep being creative.

Rob

Hello,

I am Nagesh, newbie in Arduino world. You can say more of hobbyist person.

I am from India. I bought the UNO compatible board and GSM shield from Entesla (http://entesla.com/microcontroller-development-boards/arduino).

I am using GSM shield now and able to make/receive calls and also send/receive SMS. So far the kit is working perfectly fine.

I need some help to do:

1. I want to make use of the same kit (UNO board + GSM shield) as answering machine. I mean, when someone calls, GSM Shield should pick up the call after certain rings/time, and play some predefined audio like “Welcome to House of Arduino. Press 1 to switch on lights. Press 2 to switch of lights. Press 3 for status.”

2. Detect whether call has pressed button “1”, “2” or “3” etc. so that i can take action accordingly.

On some of forum post I read that, you can convert audio file to numeric array and play it, but not sure how to do that. I would appreciate if you send me sample code or direct me to location. I googled a lot for above need but no succss so far.

THanks in advance.

Regards,
Nagesh

Hi! Im trying to send coordinates via SMS to my mobile using SIM900D with the tinyGPSPlus library. I’m totally lost.All my codes are not working

Hi Mikal! I cant change update rate to GPS shield. it use 1Hz always. I try to use line GPS.println(“$PMTK220,100*2F”); for change it and it’s nothing (( what’s wrong ?

Hello, I’m hoping that you can help me with the sketch for a high altitude balloon project I’ve been struggling with. I’m trying to read several sensors (BMP Pressure sensor, additional external thermometers, and Ada Fruit GPS), with the ultimate goal of logging and sending the data back down to a base station via XBee Pro XSC S3B radios. I’ve been struggling with this for the past few weeks and am unable to figure out how to fix the issues I’m having.

Copied below is the sample code, followed by sample output (when GPS data does show up I’ve replaced the first few numbers with & signs…

Could you please help me? Seems like an issue with softwareserial buffer overflows?

Thank you,
– SJ

Hello,

I’m using your lib in my tracking project, when I look at HDOP value, it never go below 9X after a long time outsite.

I’m using NEO6-M GPS (pedestrian mode, nema only)

Could you enlight me on the relation between HDOP and the accuracy comming from your lib ?

Thanks for the lib !

Best regards

hello mikal, i wanna ask you about TinyGPS arduino code,
what is the bool feedGPS used for? is it essential in the code? woudnt i still get the location without returning values from feedgps?
here is the code:

void loop()
{ bool newdata = false;
unsigned long start = millis();
while (millis() – start < 5000)
{if (feedgps())
newdata = true;
}
float flat, flon;
gps.f_get_position(&flat, &flon);
Serial.print(flat);
Serial.println(flon);
}

static bool feedgps()
{
while (Serial.available())
{if (gps.encode(Serial.read()))
return true; }
return false;
}

Hi
I would like to know why setTimeout() has been excluded from this library?

Mikal,

Do all of your projects (including globalBeacon.ino) fall under the GNU General Public License?

I have rather aggressively modified your Sat_Elev_Tracker to capture GPGSV and GLGSV statements to track GPS and GLONASS and update any time any change (as per your original). Makes a quite wide printout on the Serial monitor but it works. And, now, I better understand TinyGPSPlus as a side benefit.

Thanks for the original. I would never have gotten there without it!

Mike

Dear Mikal,
I copied and run your project KitchenSink.ino but I get all zeroes.
Can you please tell me what may be wrong?
KitchenSink.ino
Demonstrating nearly every feature of TinyGPS++
Testing TinyGPS++ library v. 1.0.2
by Mikal Hart

DATE Fix Age=3ms Raw=0 Year=2000 Month=0 Day=0
TIME Fix Age=25ms Raw=0 Hour=0 Minute=0 Second=0 Hundredths=0
TIME Fix Age=13ms Raw=0 Hour=0 Minute=0 Second=0 Hundredths=0
SATELLITES Fix Age=79ms Value=0
HDOP Fix Age=113ms raw=9999 hdop=99.99
DATE Fix Age=2ms Raw=0 Year=2000 Month=0 Day=0
TIME Fix Age=23ms Raw=0 Hour=0 Minute=0 Second=0 Hundredths=0