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Johnny Five's Content
There have been 29 items by Johnny Five (Search limited from 30-March 23)
#2634 Example GPS Code
Posted by Johnny Five on 22 September 2010 - 10:58 PM in Project Showcase
#2628 SoftSerial?
Posted by Johnny Five on 22 September 2010 - 09:24 PM in Netduino 2 (and Netduino 1)
#2625 SoftSerial?
Posted by Johnny Five on 22 September 2010 - 08:58 PM in Netduino 2 (and Netduino 1)
#2622 SoftSerial?
Posted by Johnny Five on 22 September 2010 - 08:53 PM in Netduino 2 (and Netduino 1)
#2409 Power LED flashes and off?
Posted by Johnny Five on 17 September 2010 - 11:46 PM in Netduino 2 (and Netduino 1)
#2312 Multiple Devices with USB Shield?
Posted by Johnny Five on 14 September 2010 - 08:20 PM in Netduino 2 (and Netduino 1)
#2310 Multiple Devices with USB Shield?
Posted by Johnny Five on 14 September 2010 - 07:54 PM in Netduino 2 (and Netduino 1)
#2302 Multiple Devices with USB Shield?
Posted by Johnny Five on 14 September 2010 - 07:06 PM in Netduino 2 (and Netduino 1)
#2281 First hardware! (Attaching GPS module)
Posted by Johnny Five on 14 September 2010 - 04:51 AM in Netduino 2 (and Netduino 1)
I wish I was able to get to this point! Maybe next Netduino.The PPS is a signal that indicates that the GPS is locked, correct? Are you wanting to get this signal on the Netduino (so your software will know when it has a lock)? I think that the data stream from the TX/RX lines of the GPS will also give you this data...
[You can hook up digital inputs to the digital pins and read them via InputPorts...just be careful with voltages, etc.]
Oh, very nice. Any plan to take photos from the balloon (or of the balloon while it's launching)?
If you need to reset the GPS via a reset line, just plug that reset pin into one of the digital pins on your Netduino. Then you can use OutputPort.Write(false) to reset it for a moment and then OutputPort.Write(true) to bring it back from reset (or vice-versa if it resets when high).
But for most GPS receivers, just power and RX/TX will do nicely.
Chris
The GPS I ordered works up to 50,000 meters. Thanks though!Johnny - just remember that civilian GPS receivers have a hard limit - 18k feet and ~515m/s -- they can exceed either of those thresholds but not both. Most limit on both those.
#2275 Power LED flashes and off?
Posted by Johnny Five on 14 September 2010 - 03:56 AM in Netduino 2 (and Netduino 1)
#2272 Power LED flashes and off?
Posted by Johnny Five on 14 September 2010 - 03:49 AM in Netduino 2 (and Netduino 1)
#2270 Power LED flashes and off?
Posted by Johnny Five on 14 September 2010 - 03:42 AM in Netduino 2 (and Netduino 1)
#2267 Power LED flashes and off?
Posted by Johnny Five on 14 September 2010 - 03:33 AM in Netduino 2 (and Netduino 1)
#2265 Power LED flashes and off?
Posted by Johnny Five on 14 September 2010 - 03:29 AM in Netduino 2 (and Netduino 1)
#2263 Power LED flashes and off?
Posted by Johnny Five on 14 September 2010 - 03:17 AM in Netduino 2 (and Netduino 1)
#2261 Power LED flashes and off?
Posted by Johnny Five on 14 September 2010 - 03:08 AM in Netduino 2 (and Netduino 1)
#2257 Power LED flashes and off?
Posted by Johnny Five on 14 September 2010 - 03:01 AM in Netduino 2 (and Netduino 1)
#2255 Netduino Firmware v4.1.1 ALPHA 1
Posted by Johnny Five on 14 September 2010 - 02:59 AM in Beta Firmware and Drivers
#2254 Power LED flashes and off?
Posted by Johnny Five on 14 September 2010 - 02:47 AM in Netduino 2 (and Netduino 1)
#2248 First hardware! (Attaching GPS module)
Posted by Johnny Five on 13 September 2010 - 10:25 PM in Netduino 2 (and Netduino 1)
And ignore the PPS?Hi Johnny Five, nice...
The 3.3V pin goes to the 3.3V pin on the Netduino. The Ground pin goes to any of the three GND pins on the Netduino. The TX/RX go to pins D0/D1 respectively. That's COM1 on your Netduino.
The communication/peripheral features for the Netduino pins are also listed in the right column on the tech specs page. Here's the link for your convenience:
http://www.netduino....duino/specs.htm
Any plans for projects to build with the GPS module? Maybe match it up with an Ethernet shield?
Chris
The plans are for a High-Altitude Balloon project. Lots of hardware coming in.. and lots of learning to do! Is there any way to attach the reset to the netduino as well?
And thanks!
#2246 First hardware! (Attaching GPS module)
Posted by Johnny Five on 13 September 2010 - 10:13 PM in Netduino 2 (and Netduino 1)
#1991 Netduino 3D Model is Done!!
Posted by Johnny Five on 09 September 2010 - 06:00 AM in Netduino 2 (and Netduino 1)
#1973 Cellular Shield?
Posted by Johnny Five on 09 September 2010 - 12:05 AM in Netduino 2 (and Netduino 1)
#1952 Cellular Shield?
Posted by Johnny Five on 08 September 2010 - 06:04 PM in Netduino 2 (and Netduino 1)
Hah, no I didn't mean I needed TCP/IP for the module, I was using the analogy the SparkFun article was using. He said that the XBee module was transmitting in a fashion that filled the airspace and corrected mistakes it saw, meaning it took longer to send data, instead of just sending out the data and not fixing errors. I'd rather use the latter.RF is black magic voodoo. I work for AT&T Mobility (not the radio piece though) and I see all the RF engineers with chicken blood on their hands and feathers flying by their desks. I don't intrude in their rituals because I'm too scared.
However, with the XBee modules you don't need TCP/IP -- it can be a straight serial connection.
Depending on how high your HAB goes chances are you are going to lose communication with it at some point - hobby-grade electronics generally aren't built for what we do to them <grin>. However, remember you're not going to have LOS issues with a HAB (hopefully!), so it'll be more of a range thing. What altitude are you aiming for?
I'm hoping for an altitude of about 10 feet. Anything beyond that will be beyond my expectations I may just use the XBee, but i'm OCD and want things to be as best as I can make it the first time, instead of just getting it to work. I'm sure you know how it is!
#1950 Cellular Shield?
Posted by Johnny Five on 08 September 2010 - 05:46 PM in Netduino 2 (and Netduino 1)
Greg, thanks, this is one of the devices i've seen already that is mentioned in the SparkFun article, but it looks like he didn't have a good experience with it. I don't know enough about RF, but I do know networking, and understand the TCP/IP vs UDP analogy that he gave. So now i'm trying to find a long range RF transmitter that uses UDP and not TCP/IP, except... in RF terms.XBee: http://www.sparkfun....roducts_id=9411
They are out of stock but it's got a 40 mile LOS range. You might look at this instead though with a high gain antenna -- it should be sufficient for your needs. Please note that these transmitters require a lot more power (the first one is around 800mA when transmitting) so you might need a separate power source just for your transmitter.
I was looking at this: http://www.radiotele... Data Sheet.pdf
Know anything about RF?
And thanks for your replies, they are greatly appreciated!
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