i used this.. no subscription, you can link it to NAVIT for free but i just used it for MPH since my speedometer is off and elevation. it just uses existing satellites, so no one has to work harder for you having the service. https://www.amazon.com/dp/B008200LHW/ref=cm_sw_em_r_mt_dp_U_0iIQCbEE448N6
I will be using this GPS Receiver and am still trying to figure out exactly what to use for the GSM modem. I'm hoping to find a GSM shield that people are getting good results here in the US with.
The pi will be powered by the 12V coming to the radio, which means that it will always have power. This is something I need to really worry about. Assuming I disable certain peripherals (e.g., wifi and hdmi) and drop the power consumption to like 2 W, considering my linked converter is only 70% efficient, I'd be drawing about .25A from my car's battery, which is rated at about 65 Ah. Theoretically, that gives me like 10 days of run time, but it's not a good idea to be doing that to my car's battery.
I use this USB GPS receiver with a pi, and I do pull time from it but haven't compared the accuracy, the pi can't reach the internet anyways. https://www.amazon.com/GlobalSat-BU-353-S4-USB-Receiver-Black/dp/B008200LHW%3FSubscriptionId%3DAKIAILSHYYTFIVPWUY6Q%26tag%3Dduckduckgo-d-20%26linkCode%3Dxm2%26camp%3D2025%26creative%3D165953%26creativeASIN%3DB008200LHW
I use one of these, if your open to USB. Works great, good signal even in buildings http://www.amazon.com/GlobalSat-BU-353-S4-USB-Receiver-Black/dp/B008200LHW%3FSubscriptionId%3DAKIAILSHYYTFIVPWUY6Q%26tag%3Dduckduckgo-d-20%26linkCode%3Dxm2%26camp%3D2025%26creative%3D165953%26creativeASIN%3DB008200LHW
I am using the GlobalSat BU-353-S4 USB as well. Although I had to make a couple of code changes to v0.5b5 which I flight tested last week and it worked great. I am planning to update to the latest releases and see what else needs to be done to make it a simple auto-detected and auto-configured device.
I didn't find it difficult at all, but disclaimer: I've worked in IT for the last 10+ years so what I find difficult with PCs may be different than what others find difficult.
However, I know lots of people build them who aren't techies.
Step 1. Buy/find an old Laptop
Step 2. Buy an SSD, almost any will work but should be 200GB or more. You're not buying for performance so dont get upsold by the nerd at the store. You're buying an SSD because a standard hard drive cant take the shocks of offroad travel.
Step 3. Clean windows install. (Youtube it, its easy)
Step 4. Pick your GPS Software. I like OziExplorer but its a little technical to use, I know lots of guys like ArcGIS.
Step 5. Download actual map images; You can buy images from backroad mapbooks companies or simply use google earth to save the images at different heights to a folder on your laptop which Ozi will use. There are lots of guides online for this
Step 6. Purchase your GPS receiver. This is similar to mine: http://www.amazon.ca/USGlobalsat-BU-353-S4-USB-Receiver-Black/dp/B008200LHW/ref=sr_1_1?ie=UTF8&qid=1433542640&sr=8-1&keywords=gps+receiver
Step 7. GO TESTING. OziExplorer was off by about 4km when I first set it up, I had to tweak the alignment of the GPS points to the road. Once you do that it'll be spot on.
Step 8. Go get lost. and come home safe.
Personally I love it, I have a Garmin GPS too which is fine for city/country road travel but as soon as you leave the road its useless. With my setup I can view satellite imagery as close as google has, and a few areas as close as the government has.(Helps having friends with access to satellite imagery) Its helpful for me because I can see with ridiculous detail how close I am to water sources, I can see splits in trees that might indicate an unmarked trail, and clearings for camping. Its BEYOND helpful for overlanding.
GPS does not require an internet connection; GPS is a constellation of satellites in orbit containing cesium-rubidium clocks who transmit a steady stream of highly precise time data. Terestrial receivers...whether the navigation GPS in your car, in your cell phone, or USB/serial receiver plugged into a computer...decode that stream of time data from 3 or more satellites to triangulate your position. GPS receivers do not require an internet connection (cellular via SIM card or otherwise), however in most current production vehicles, several of the other services that utilize GPS data DO require internet for proper operation, such as traffic updates and maps for the navigation systems.
GNSS is the Global Navigation Satellite System, and is encompasses several positioning systems....GPS from the US, Galileo from the EU, Beidou-2 from China, and GLONASS from Russia. There are GPS receivers that can receive data from one or more of these services. GNSS-SDR is simply a software defined receiver designed to decode position data from one or more of these systems; take a look at https://gnss-sdr.org/quick-start-guide/ for details on what it is and how it works.
GPS can be incorporated into your cyberdeck by using a USB or serial GPS receiver; for example, I'm using a GlobalSat BU-353-S4 USB GPS receiver on a Raspberry Pi 4 to use with ham radio applications (including Xastir for APRS). The Ublox USB GPS is also pretty popular. If you're looking for information on ham radio applications for the Raspberry Pi, check out Build-A-Pi by KM4ACK, which is a nice application which bundles and automates a variety of scripts to install and partially configure a variety of popular ham applications.
Using SDR can be a great way to listen in and decode a variety of RF signals....GNSS as seen above (with proper antenna/accessories), as well as broadcast AM/FM radio, amateur radio, public safety radio, air band, and more. Check out https://www.rtl-sdr.com/rtl-sdr-quick-start-guide/ for information on getting started with the inexpensive but versatile RTL-SDR dongles.
Hope this helps!
I used this with a raspberry pi
https://www.amazon.com/dp/B008200LHW/ref=cm_sw_r_sms_apip_aELFZY9nbnQDn
All,
I successfully installed Android-x86 to a partition on my laptop so that I can select Android or Windows at startup. Doing so allows me to access the USB ports on the laptop and well as perform much faster than an Android emulator.
Going with this workaround is not without its nuances of course. I had issues with "Bluetooth keeps stopping", so I disabled BT in the bios to prevent further messages. I would not suggest using a partition for those who are less technologically inclined, could be easy to mess up your computer if you're not careful.
Here are some screenshots of Android and Gaia GPS at work.
Gaia GPS actively showing my location while I was on the train without an internet connection.
System info showing Android running on a Dell Inspiron device.
I used the GlobalSat BU353-S4 and currently use the app USB-GPS to parse the GPS data for Android to read. I had to enable developer mode and select the above app for location data for Android to recognize the data as my location.
All,
I successfully installed Android-x86 to a partition on my laptop so that I can select Android or Windows at startup. Doing so allows me to access the USB ports on the laptop and well as perform much faster than an Android emulator.
Going with this workaround is not without its nuances of course. I had issues with "Bluetooth keeps stopping", so I disabled BT in the bios to prevent further messages. I would not suggest using a partition for those who are less technologically inclined, could be easy to mess up your computer if you're not careful.
Here are some screenshots of Android and Gaia GPS at work.
Gaia GPS actively showing my location while I was on the train without an internet connection.
System info showing Android running on a Dell Inspiron device.
I used the GlobalSat BU353-S4 and currently use the app USB-GPS to parse the GPS data for Android to read. I had to enable developer mode and select the above app for location data for Android to recognize the data as my location.
u/Chips_gpx
Your questions is sorta confusing. But anyway yes you can do this. Take a generic laptop, with, say, windows 7.
I would just get a USB one so it's re-usable with other computers.
http://www.amazon.com/GlobalSat-BU-353-S4-USB-Receiver-Black/dp/B008200LHW/