"Have you used it?"
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Raymundo Magana
- Male
- Monterrey, Nuevo Leon
- Mexico
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Latest Activity
Raymundo Magana commented on Bart's blog post Has anyone seen this?"It is expensive... but it's really good...
it's used on the UAV research projects @ my university..."
Troy commented on Raymundo Magana's blog post New 65 Channel 10Hz GPS Receiver with Smart Antenna @ Sparkfun"I am working on SUP500 with AdruPilot (not mega). Haven't had any free time lately to work on it.
Not sure what latency on the SUP500 is but otherwise it looks OK in the compassion SparkFun did (thanks SparkFun).
I will post to this thread…"
Raymundo Magana commented on Raymundo Magana's blog post New 65 Channel 10Hz GPS Receiver with Smart Antenna @ Sparkfun"ups, here's the link... MediaTek GPS"
Raymundo Magana commented on Raymundo Magana's blog post New 65 Channel 10Hz GPS Receiver with Smart Antenna @ Sparkfun"Hi daniel,
I think the new GPS to be supported by DIY drones is this MediaTek with adapter...
it's really cheap and you only need the cable sold in the DIY drones store to connect it to your board"
Daniel Gru commented on Raymundo Magana's blog post New 65 Channel 10Hz GPS Receiver with Smart Antenna @ Sparkfun"Sorry to get this Post up again, but i am ready to buy my ArduMEGA soon, has anyone successfully tried running the SUP500 with Ardupilot, preferably ArduMEGA? If so, is it doable for a noob like me?
Daniel"
Raymundo Magana commented on CrashingDutchman's blog post 3 new camera systems and a new camera"Does anyone recommend the combo "2. 900 MHz 200mW Tx/Rx & 1/3-inch CCD Camera" for a UGV? I use 2.4 GHz Xbee's and I don't need more than 1 Km range... In fact I probably only need 500 m."
Lew Payne commented on Raymundo Magana's blog post New 65 Channel 10Hz GPS Receiver with Smart Antenna @ Sparkfun"@C Moss - Thanks... I'm really trying to get a grasp on how consumer-grade GPS chips currently process the signals. One thing that I've noticed is that consumer-grade chips never talk about latency... how much the "current"…"
NomDePlums commented on Raymundo Magana's blog post New 65 Channel 10Hz GPS Receiver with Smart Antenna @ Sparkfun"Hi Lew,
No I can't give you an example I'm affraid, I'm just going by what I know about spread spectrum and my own software radio programming experiences. I've not looked at the actual methods they use in GPS chip…"
Lew Payne commented on Raymundo Magana's blog post New 65 Channel 10Hz GPS Receiver with Smart Antenna @ Sparkfun"@C Moss - Can you give us an example, from manufacturer literature, confirming what you just said? It's easy to speculate, but I'd rather have the facts."
NomDePlums commented on Raymundo Magana's blog post New 65 Channel 10Hz GPS Receiver with Smart Antenna @ Sparkfun"I expect extra channels are also useful for when reflected signals are also being received - a new channel could be assigned to each individual reflection prior to calculating which is the most direct/shortest path (the first to arrive)."
Raymundo Magana commented on Pete Hollands's blog post Demonstration of Adaptive Control"Matt,
I don't think simulink is the way to go to run it on embedded, probably the embedded code generation option is the best... I have the module, but I don't know how to use it... a coworker here uses it for HVAC control, so I can ask…"
Raymundo Magana commented on Melih Karakelle's blog post Flytron FC-422 Indoor & Outdoor Submicro Camera"Hi Melih,
On the page I saw a recommended video transmitter, but what about the receiver?"
Raymundo Magana commented on Pete Hollands's blog post Demonstration of Adaptive Control"Matt,
I'm glad you're getting good results with matlab! Keep me posted about your results...
Ray,"
Raymundo Magana commented on Pete Hollands's blog post Demonstration of Adaptive Control"Matt,
Thanks for the explanation, I truly misunderstood what you meant on the first post.
Of course the parameter estimation has to be obtained from a Dynamic Response, I failed to specify what I was asking. What kind of test do you plan on…"
Raymundo Magana commented on Pete Hollands's blog post Demonstration of Adaptive Control"Matthew,
It is a one time only calculation process since it's based on a long test. Normally a 1 or 2 hour test is used to feed the system and calculate the parameters. This aproach reduces drastically the impact of individual…"
Profile Information
- About Me:
- M. Sc. in Automation and Control from Monterrey's Institute of Technology and Superior Studies.
Bachelor's degree in Mechatronics from Monterrey's Institute of Technology and Superior Studies.
Unmanned Vehicle enthusiast.
- Hometown:
- Monterrey
Raymundo Magana's Blog
New 65 Channel 10Hz GPS Receiver with Smart Antenna @ Sparkfun
Posted on April 6, 2010 at 10:15pm 33 Comments 0 Likes
A new 10Hz GPS is available on SF and it looks a lot more sturdy than the Venus module... Does anyone has it?
http://www.sparkfun.com/commerce/product_info.php?products_id=9758
Comment Wall (1 comment)
- At 3:23pm on April 30, 2010,
DeveloperWilliam Premerlani said… - Hi Raymundo,
Regarding your questions about A/D conversion in the UAV DevBoard (UDB), relating to your plans for using a dsPIC30F40XX.
1. We tie the digital and analog power supplies together on the UDB. We have not seen any noise problem as a result. I think that is because the board is small, with very short connections. There are many low ESR, 0.1 uF caps distributed around the board, at least 13 of them, and a couple of 10 uF caps, I think that helps.
2. With regard to the requirements for supplying the A/D inputs, you should read the Microchip documents to make sure you understand what is needed. In the case of the accelerometer connections in the UDB, there is a 0.1 uF capacitor for each accelerometer input, connected from the dsPIC A/D input to ground. Take a look at the accelerometer section of the UDB schematic, you will see it. It is part of an anti-aliasing, low pass filter, but it also plays an important role in supporting the signal while it is being sampled. You will need to do something similar.
Best regards,
Bill
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