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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 Rana Oct 5, 2016. 111 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


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


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

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…


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?



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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