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1  Development / Suggestions for the Arduino Project / Re: Arduino with BlueGiga WF121 Wi-Fi module on: November 13, 2013, 10:29:28 am
Has anyone made any progress with this?  I'd love to see a UART or SPI library for using this module.  In quantity the price of this module is not much higher then the CC3000 (especially once you figure in the cost of board design and antenna design of the CC3000) and it appears to have a larger feature set then the CC3000.  Wireless N and built in antenna are some of then that jump out at me immediately.

 

2  Using Arduino / Networking, Protocols, and Devices / Re: Software Serial on Leonardo question on: December 12, 2012, 04:33:44 pm
Pylon you are correct there was a typo in my original post.  forgot the word input is there.  

The intent of my question was to verifying that software serial on the Leonardo can use any pin.  I have been using a board for many years that I had made with a ATMEGA328p-pu on it and I recently just had the board re-spun using an ATMEGA32U4 and reduced the overall size of the board.  Since they are 6 layer boards that are very expensive I do not want to re-spin the boards.  On my old board i was using 0,1 as a hardware serial port 2,3 as a software serial port 4,5 as a software serial port and 6,7 as a software serial port.  Since re-spinig my 6 layer boards cost over $1500 between the boards and parts, I'd rather white wire the boards. This should correct my over sight and I plan on switching the software serial pins to (14,3):(16,5):(15,7) respectively from their previous situation.  Just trying to cut down on the reprogramming and white wiring to 3 wires verse and 6.
3  Using Arduino / Networking, Protocols, and Devices / Software Serial on Leonardo question on: December 11, 2012, 10:00:11 pm
I see that software serial pins can only be used for RX pins on pins 8,9,10,11,14,15,16 on the Leonardo. My questions is can any pin be a TX pin though?  I'm primarily interested in using pins 2,3,4,5 as input TX pins is that possible?  I have a design that I'm porting over from an older Arduino and the boards are already made so the minimal bond wires I need to change in traces the better.

4  Using Arduino / Networking, Protocols, and Devices / Re: serial over ethernet? on: October 17, 2012, 03:34:32 pm
Thanks for the link.  I'll take a look.  Telnet is actually how I'm doing it now.  Looking for something simpler. 
5  Using Arduino / Networking, Protocols, and Devices / serial over ethernet? on: October 17, 2012, 02:29:54 pm
OK I"m trying to find a simple way to transmit information sensor data back and forth over ethernet without creating a web page.  I've looking into TCP, UPD, & Telnetting.  Right now telnet works great for what I'm trying to do.  With the Arduino running a Telnet server the libraries takes up a lot of program space and I don't have enough room then do everything with the sensors I want to control with the arduino.  Is there an easier way to get 2 way communication preferably with feedback over ethernet on the Arduino that doesn't take up a large portion of the Arduino program space?  Basically I'm trying to do 2 way secure socketing. 
6  Using Arduino / Programming Questions / Re: Software Serial issues after update to arduino 1.0 on: August 21, 2012, 07:30:26 pm
I found it finally.  For anyone else that wants to modify the core libraries for the Arduino they are in the package contents of the app so right click on the arduino app in the Applications Folder and show package contents.  you can drill down in there.  Every time you update your Arduino program though you'll have to re-modify the files because they will be over written.
7  Using Arduino / Programming Questions / Re: Software Serial issues after update to arduino 1.0 on: August 21, 2012, 07:18:04 pm
Riva you don't know where that .h file is do you.  I've been looking for it on my Mac and I can't seam to find it anywhere.
8  Using Arduino / Programming Questions / Software Serial issues after update to arduino 1.0 on: August 20, 2012, 08:40:12 pm
Ok with out getting into my other frustrations of switching from the beta version of arduino to version 1.0.1  I'm having a big issue I believe.  Before the upgrade I was using NewSoftSerial and I had to modify the .h file of the NewSoftwareSerial library  specifically this line of code:
Code:
#define _NewSS_MAX_RX_BUFF 256 // RX buffer size

as you can see I had to increase the NewSoftware Serial RX buffer considerably to 256bytes.  Now that I can't use new software serial anymore is there a way to increase the buffer on the SoftwareSerial in the Arduino 1.x.x environment?

I need it to be at least 256 bytes to handle all the data coming in from the serial port.

Thank you.
9  Using Arduino / Project Guidance / Re: Variation of an inertial navigation system on: May 03, 2012, 09:01:08 am
Yeah I do have some concerns about erroneous readings do to finite material around me but that concern needs to wait until.  Like any project this won't be an one product fits all solution.    For those interested Analog Devices sells some very nice high precision MEMS Gyros as COTS parts.  The specs are similar to optical gyro's but still use MEMS technology.

Press Release
 http://www.analog.com/en/press-release/11_08_11_Tactical_Grade_MEMS_Gyroscope_Rivals/press.html

Data Sheet
http://www.analog.com/static/imported-files/data_sheets/ADIS16136.pdf

10  Using Arduino / Project Guidance / Re: Variation of an inertial navigation system on: May 02, 2012, 12:58:27 pm
your right AWOL. 

as an update for everyone too we are also using an absolute pressure sensor + 9 DOF IMU.  currently we are using mems but will be switching out to more accurate sensors shortly.  we are not looking to spend millions to do this and we are not looking to spend 100 bucks to do this either.  I think one mind set with arduino is to do everything on the cheap.  Where I use it as a prototyping platform as a quick processor to use.  In the end I rarely use it as my final choice in processors.   I figured I'd post here initially because I figured a bunch of arduino guys are using cheap IMU's in there RC projects and would have been able to give me a jump start on some of my research. 
11  Using Arduino / Project Guidance / Re: Power saving in code for extended battery life. on: May 02, 2012, 12:49:58 pm
I've based projects on the nightingale code as well.  I really want to dissect the enerlib library and figure it out.  the enerlib seams to be a lot cleaner way of doing it. 
12  Using Arduino / Project Guidance / Re: Power saving in code for extended battery life. on: May 02, 2012, 12:40:55 pm
I'd love to see some example code for putting the unit to sleep using the the watchdog timer and to wake it up every 8 seconds.  I saw the enerlib library but it's very poorly documented.    I'd love to set the watch dog timer to actually go for 15 minutes but it looks like this isn't possible on the atmega chips.  it appears 8 seconds is the longest. 
13  Using Arduino / Project Guidance / Re: Variation of an inertial navigation system on: May 02, 2012, 12:34:39 pm
I figured out the math using good old fashioned Projectile motion back from college physics.  I'm having some success with calculating the distance over time.  What I've found out is the 8 MHZ sampling that I'm doing on the arudino pro 3.3 isn't enough I've stepped up to a 32-bit ARM Cortex M3 microprocessor running at 3.3V and 72Mhz.  The propagation of error sampling at the Arduino rate of speed is really the problem.  we have also come to the conclusion that after 1 hour 100ft of error is very feasible based on our initial test results.

I've been in correspondence with a team of engineers in Europe working on a PHD in IMU's that have had great success doing exactly what I'm doing.  They are using slightly better 9 degree of freedom then I am using but my results should be sufficient for my needs.  I am trying to extract knowledge from them on how they are doing this so nicely.

As to comment on the whole NASA thing actually the Space shuttle did use and INU/IMU unit.  I work with an ex-nasa engineer and he confirmed that. also apollo crafts and moon landers had mechanical IMU's.  I also work with an ex underwater ROV engineer and he has confirmed they use INU/IMU's as well for autonomous underwater vehicles so I believe that I have a team of engineers put together to solve the problem I've set out to solve.

being an engineer for over 10 years has taught me that anyone saying it can't be done just isn't trying.
14  Using Arduino / Networking, Protocols, and Devices / A-GPS using ublox LEON-G100 GSM module on: April 22, 2012, 05:48:00 pm
Has anyone used the ublox LEON-G100 before?  From my understanding it has A-GPS that can give you long/lat positions form the GSM module as a built in feature derived from triangulation of the 3 cell towers.  I'm using an AT&T Sim card in it and I can get everything else working  but I can't figure out the AT commands to get long/lat of the module from the cell towers.  I understand it's not as accurate as using a GPS chip and my project also uses a GPS module but for times when GPS can't get a fix and during startup while the GPS can takes 30+ seconds to get a fix it would be nice to use the Assisted GPS feature of the GSM module.  Any help would be great.  If anyone knows the AT commands that would really help our a lot.
15  Using Arduino / Project Guidance / Re: Variation of an inertial navigation system on: March 29, 2012, 01:26:30 pm
thanks DC42 for the link.  it looks like a good read. 
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