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andy j's Discussions

Use the DNT900 in place of an XBee -- open source adapter board

Started this discussion. Last reply by andy j Jan 31, 2013. 23 Replies

Hello All!I am working on a interface board that will allow the DNT900 radio to plug in to XBee sockets (specifically the XBee900 pro, and those of the same pinout). The DNT900 is cheap, ($70 per…Continue

Arduino Dreamshield 16 - open source flight shield for arduino mega - interfaces DNT900 radio, USB, 16 servo connections, and more!

Started this discussion. Last reply by andy j Jan 30, 2013. 110 Replies

// -- -- -- -- --A Very Special thanks to the company RFM (the maker of the amazing DNT900 radio) for their support of my project!!!// -- -- -- -- -- …Continue

Tags: shield, remote, usb, dnt900P, dnt900C

40+ Mile range!!! Arduino Mega Piggy-back all-in-one solution (sensors, control, telemetry, video)

Started this discussion. Last reply by andy j Nov 7, 2011. 29 Replies

I MIGRATED THIS DISCUSSION FROM WIRELESS - THIS EXPLAINS THE FOCUS OF THE FIRST PAGE     THIS IS the BEST (imo) Telemetry module out there currently !!!…Continue

Tags: chrobotics, xtend, chr-6dm, remzibi, OSD

 

andy j's Page

Latest Activity

Joe DeMeyer left a comment for andy j
"For the base radio, I communication with the radio through a C# program.  I was able to request the radios MAC address and it responded correctly.  I wanted to run the same test on the remote radio. I started with the SoftwareSerial…"
Feb 1, 2013
andy j left a comment for Joe DeMeyer
"I can sure try - why dont you tell me a little more about what you have done initially... What pins have you hooked up on the DNT900, and do you attempt any configuration (via UART) on the radio?"
Feb 1, 2013
Joe DeMeyer left a comment for andy j
"Thanks for the offer!  I'm attempting to connect to the DNT900 with an Arduino Pro Mini.  I thought I had the program correct to communicate with the radio through the UART.  However, when I view the TX line on my scope, I…"
Jan 31, 2013
andy j replied to andy j's discussion Use the DNT900 in place of an XBee -- open source adapter board
"Sorry for the delay - I have disbanded all projects due to my school load. I am in the second half of a senior design class that alone has me quite busy! thanks for your interest though -  These DNT900 modems are fantastic little pieces! once…"
Jan 31, 2013
David C. Allen replied to andy j's discussion Use the DNT900 in place of an XBee -- open source adapter board
"Any update on the status of this project? Thanks,   David"
Jan 31, 2013
andy j replied to andy j's discussion Arduino Dreamshield 16 - open source flight shield for arduino mega - interfaces DNT900 radio, USB, 16 servo connections, and more!
"Sorry folks - Project is disbanded. But if everything goes smoothly, I may release a much much more capable version! It's my groups senior design project! stand-alone, multivehicle, single-board, opensource goodness.   Now, I will…"
Jan 30, 2013
andy j replied to David Hughes's discussion Motor speeds up with constant throttle ??
"I have a similar issue with two Jeti 77 opto's....  seemed like i would keep throttling up until all of a sudden they both kicked in real sudden, and then kept speeding up.....   in any case the Jeti guys told me to add capacitors…"
Jan 30, 2013
andy j left a comment for Joe DeMeyer
"Hey Joe! curious what specific sorts of questions you had regarding the dnt900. thanks!"
Jan 29, 2013
andy j posted a discussion

FLIR Camera's for sale !!!! Thermal Vision !!!!!!!!!!!!! LCD screens, Wireless video transmitters and more

make me some offers? --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Small LCD screens, 3-5", embedable (ie lcd panel with driver board, just mount in box, and give them power and video!! very neat) …See More
Nov 4, 2012
David C. Allen replied to andy j's discussion Arduino Dreamshield 16 - open source flight shield for arduino mega - interfaces DNT900 radio, USB, 16 servo connections, and more!
"Andy What is the status of your project? Thanks,   David  "
Oct 23, 2012
David C. Allen replied to andy j's discussion Use the DNT900 in place of an XBee -- open source adapter board
"What is the status of this project? Thanks,   David    "
Oct 23, 2012
SaadTiwana replied to andy j's discussion Use the DNT900 in place of an XBee -- open source adapter board
"By the way, i'm also planning to include an on-board power supply (to convert LiPo voltages to regulated 5V and 3.3 V supplies) for the DNT900 and IC's. Do you think it's a good idea? If yes, what, in your opinion, should be…"
Aug 21, 2012
SaadTiwana replied to andy j's discussion Use the DNT900 in place of an XBee -- open source adapter board
"Hey guys. I'm designing a carrier board for the DNT900. USB, RS232, UART5V, UART3.3V interfaces. Let me know if you're interested and i'll let you know once i've completed the boards. Nice to see other people using the DNT900…"
Aug 21, 2012
John Lundberg replied to andy j's discussion Use the DNT900 in place of an XBee -- open source adapter board
"Does anyone have a progress report on this?"
Jun 18, 2012
Simon Bull replied to andy j's discussion Use the DNT900 in place of an XBee -- open source adapter board
"Any progress with this project?   I had spotted these modules too and was about to order some from Digikey.com when I came across your thread.   Are you still going to make some adaptors to fit into an xbee carrier board?   Why not…"
Jun 1, 2012
Brad Smith left a comment for andy j
"i,m sorry Andy just realized i have a inbox ! only code i have any experience with is basic stamp and html and most of what Ive done was twisting others code to suit my needs ,what i would do is find an open source community that has done something…"
May 29, 2012

Profile Information

About Me:
college college college
oh, and UAV's !!
Please tell us a bit about your UAV interest
recreational

I am the creator of the Dreamshield project. No telling if it will "take off" (hehe) but i wanted to share the info with people!

Comment Wall (4 comments)

At 11:51am on March 13, 2012, John Lundberg said…

Andy,

Do you have any C/C++ code for the DNT900 that I could look at? 

At 10:00am on May 29, 2012, Brad Smith said…

i,m sorry Andy just realized i have a inbox ! only code i have any experience with is basic stamp and html and most of what Ive done was twisting others code to suit my needs ,what i would do is find an open source community that has done something similar and join them and ask for help , at least you could see some of the problems and solutions they have found and build upon that  for the xbee adapter this shouldn't be to hard that's why i suggested it. this site has some info open source xbee adapter with this all you should have to do is replace the the power supply with a more powerful one and rearrange the pin outs to suit your module  . about the tx/rx project that sounds like a grand idea but has a lot of competition and pitfalls and will require a lot through testing and knowledge which i don't have

At 6:06pm on January 31, 2013, Joe DeMeyer said…

Thanks for the offer!  I'm attempting to connect to the DNT900 with an Arduino Pro Mini.  I thought I had the program correct to communicate with the radio through the UART.  However, when I view the TX line on my scope, I don't see an indication of a data stream.

I can't tell if it's a pin definition, or because the USB cable is still attached, even the program.  Can provide some direction on the set up for using the UART?

Thanks,

Joe

At 6:58pm on February 1, 2013, Joe DeMeyer said…

For the base radio, I communication with the radio through a C# program.  I was able to request the radios MAC address and it responded correctly.  I wanted to run the same test on the remote radio.

I started with the SoftwareSerial library.  I was able to write to an LCD display with this library and thought I could use the LDC display to verify my communication with the radio.

I was using different baud rates for the LCD and the radio and thought that might not work (thinking I should start simple and convservative).  I move to using just Serial for the radio and connect the radio to pins one and zero.  I have commented out most of the code to concentrate on verifying I am sending bytes to the radio.  This was when I used an oscilloscope to watch the transmit line.  It appears the data is not sent.

I am attempting to request the MAC Address.  I have not attempted any configuration.  I have the remote radio wired the same way as the base radio so I believe the pins are wired correctly.  Your thoughts?

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