mojoB

4 ms·

1.
by mojoB 8y ago
> As an aside, I have been unable to get my hands on any modern multi-frequency GPS receivers. If someone has a link to one that I can buy with a credit card, I would love it! Try SwiftNav or Tersus. I have not used either of them so I c
2.
by mojoB 10y ago
I'd suggest Yocto is the de facto standard for this kind of embedded device. It's a bit complex behind the scenes but general building and updating packages is fairly straightforward. Bringing up the edison is very easy. The bootl
3.
by mojoB 10y ago
The Pandora [1] is a few years old at this point. I had one for a short while and wasn't too impressed. There will be an update called the Pyra [2] coming later this year. [1] https://www.openpandora.org/index.html [2]
4.
by mojoB 10y ago
The original batteries were supplied by Samsung SDI [1], so I doubt there would be any firing. I haven’t seen the who the second supplier was. [1] http://www.gsmarena.com/galaxy_note7_will_longer_come_with_s...
5.
by mojoB 10y ago
Certainly, though the output power is quite a bit less (20dBm for WiFi vs 4 dBm for typical bluetooth). http://www.tomsguide.com/us/how-to-bluesniper-pt1,review-408...
6.
by mojoB 10y ago
http://eachvideo.com/watch?v=q5EcyUaZQrU
7.
by mojoB 10y ago
As mentioned in the sibling, media codec is the nominal case. They are included in the SOC, not something specific to this project. Being ARM Cortex processors, they are 32 bit. Allocate them a chunk of RAM, upload a program and set them ru
8.
by mojoB 11y ago
Dam monitoring systems use DGPS, one receiver on the wall, the other nearby. Without a local reference station, atmospheric and ionospheric disturbances would totally overwhelm the effect they are trying to measure. This [1] covers it quite
9.
by mojoB 11y ago
They are referring to integer ambiguity resolution, which is the final step in getting a dual-frequency differential GPS position down to centimeter accuracy. This [1] is a good explanation. It does require a GPS receiver capable of carrier
10.
by mojoB 11y ago
Do you have any references for the ground-satellite abilities for 5G? I couldn't turn up anything on Google. Locata [1] has been in the high-end space for a while. I had heard of a lower-end approach too, though the name escapes me, an
11.
by mojoB 11y ago
I think this is a little misleading. The IEEE paper is about a reducing the computational effort for a filtering technique (Contemplative Real-Time) developed by one of the authors, which seems to be published here [1]. The original paper i
12.
by mojoB 11y ago
Isn't the car calling their service center / 911 one of the major selling points of the service? The root problem is that they were able to flash an ECU with custom code. From there they are 'trusted' on the vehicle netw
13.
by mojoB 11y ago
I don't have any inside knowledge of the Deere system, but I'd be very surprised if it was. My guess is that most of the Deere stuff comes NavCom. That is certainly the case for their GPS system. > "NavCom's involveme
14.
by mojoB 11y ago
These systems have no sensors beyond GPS and IMU, and typically only control the steering. Typically they are following a predefined path, not even having the concept of where the end of the row is, relying on the operator for turning and a
15.
by mojoB 11y ago
ASI were hardly the first, and Deere had their AutoTrac system before they started working with ASI. > The Beeline Navigator was developed in 1993 by Australian engineer, Rob Mailer. [1] [1] http://www.queenslandcountrylife.co
16.
by mojoB 11y ago
There are a bunch of factors. There are both correlated and uncorrelated errors that you need to correct. The main source of correlated error is ionospheric distortion, which will affect the two units mostly equally. At the low end (cheap c
17.
by mojoB 11y ago
RTK GPS is quite common for levelling applications. It's closer to 25mm in the vertical when a local (~10km) base station is used. Lasers are used but have line-of-sight and atmospheric distortion issues. This [1] is a good overview of
18.
by mojoB 12y ago
Not right now, but from 2018 manufacturers selling in Europe will have to provide information and tools to independent mechanics. http://cema-agri.org/publication/access-vehicle-repair-maint...