Hi folks
I'm leaving soon for an 18 month trip around Africa and will have a laptop mounted in the cab, which I will use for music, navigation etc.

I'm looking for help in deciding which GPS receiver to use? My assumption is that USB is the way to go, with an external antenna. Anyone have some advice for me please?

Also, what software should I use for realtime navigation?

I'm thinking I'll use the Tracks4Africa and Wanderlust GPS waypoints, which use mapsource (from Garmin).

Therefore it will be necessary to interface with mapsource.

Thanks
Steve
OverAfrica - overland, over Africa

Steve,
I have been using GPS commercially in Africa in my work for the last 13 years, and have used/owned quite a few, from numerous Garmins through to survey grade Trimble and Thales units. My own take on the use of GPS with a laptop is as follows:
1) To be honest I really don't trust systems that are as complex as lap-tops and usb/bluetooth connections or PDAs as navigational solutions... Why, well over the years I have had several laptops fail me, but a stand alone gps (i.e. recreational garmin type or similar) is generally designed to be put through a fair bit of punishment that a laptop cannot put up with. Most are at least dust and waterproof to a good degree. I have seen GPS units fail, but only after a minimum of one years DAILY use by a forest survey team... This is very demanding use.
2) A stand alone GPS is more flexible - car, foot, bike, boat you can take it along...
3) It is easier... Jump in, switch on gps, switch on car and go. As opposed to booting up, connecting cables and waiting for everything to be up and running. When you stop it is also easier to stuff gps in bag and leave vehicle. Esp if you are already the center of attention! I don't really want people seeing laptops etc in my car in built up areas for obvious reasons.

I do use a laptop connected to a gps for mapping use, and for that I have an old panasonic toughbook I bought 2nd hand. Tracks for Africa is fine, but (and this is just me) I am not a fan of all their "eco" statements and community GIS for Africa stuff on their site. No doubt their stuff is usefull, but on the other hand I dont want to only follow other peoples tracks and waypoints, and I certainly don't want to pay for it. I also have found that in the past I have over prepared, getting anal about maps and waypoints, and found out that a simple gps and map was enough.

But, in short I would say if connecting to a laptop then a simple GPS is enough, while still more than good enough on it's own - I have been quite impressed with the bottom of the range Garmin GPS 72: rugged, not too small, even floats!

If not connecting to a laptop then you might want a bit more features i.e. colour, better internal base map etc. If you don't mind trading portability out of the vehicle for a nice large screen then a 176 or similar would be ace!

For more of a compromise between portability and size the 60cs is good.

If you want small size then the vista is very good. I recently got a Vista Hcx and was VERY impressed with accuracy and ability to maintain gps position under heavy, wet tree cover. The high sensitivity chips now in use are a real step forward for gps! We were so impressed that we bought 14 to use for various purposes under thick rainforest canopy.

I have used all those and to be honest the vista is my current favourite - yes a tiny screen, but so portable and with a pretty decent base map. And anyway if I am lost I just pull over and try to figure it out, so the small screen is not that big a deal.

As for real time mapping software, I actually think the basic garmin world map for mapsource is not that bad. I have also used fugawi but more for it's ability to take scanned maps than any thing else. I am not anti-laptop, for sure on a trip like yours I would take one, but it would be tucked away somewhere safe, and the navigation would be on a stand alone gps and the music on the ipod.

So my final choice would be probably a 60 as a decent compromise between screen and portability, and if you want to hook it up, then you will have the cable, laptop and mapsource anyway. And some decent paper maps. I just think this is a more flexible, tougher option. All just my 2p.
Gil

You can get a USB or bluetooth mouse GPS for under £20 that will work perfectly with your laptop. In terms of software I like Oziexplorer, but try a few out and see what you like.

Like Gil says, laptop systems are inherently unstable. Cables come out, software freezes, hard drives crash - its good to have a nice simple Garmin or similar unit as a mainstay.

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Pictures, Mauritania 2011

Hi Steve, i was in a similar predicament to yourself, however I am by trade a computer engineer working in a "rough environment" & know the ins and out very well.

first off if you dont have a laptop yet then either buy a cheap one you dont mind throwing away or buy a top quality ruggedised one ..eg one of the Panasonic toughbook range.. these are excellent but very expensive.

as for software why just use one.. the best bet is to use Ozi-explorer and then scan maps of the countries you are visiting and plot your waypoints directly onto the scanned maps you can also use M for A, autoroute, memory map etc.

as for GPS receiver i would use a "wired in" usb or serial reciever that is if the cables will reach via door seals etc.. no problem there with landrover door seals as bluetooth can be problematic in very hot climates and even come off the vehicle when driving rough pistes at least mine was left hanging by its wire.
A friend had a long walk back along the track to pick his bluetooth reciever up..(he used his mobile to find it )

as an aside, how will you power the gps? dont use a 12V/240 mains inverter to power a laptop mains adaptor that then powers the laptop.

As the efficency will be in the 30% range buy a good quality 12v laptop power supply.

in 2007 I was in mauri running on wayponts from a friend when the inverter powering the laptop boiled and died 1 hr later the laptop battery died, however i had backed up my waypoints on an old garmin gps2 8ch receiver and thank christ i did as i was 70 miles off the piste to atar.

I am currently building a navigation/ music pc for my landrover.. sad git.

take a laptop by all means but... take maps etc

have fun

Gren

For Morocco last year I bought a cheap Dell laptop and then fitted a bigger and slower drive to it and used Touratech software.

I looked at things like Memory Map (which I use in the UK), Ozi Explorer, etc, but Touratech seemed to be the most flexible and logical.

I am sure Ozi can do some great things, but the interface is a mess and not particularly intuitive.

What ever laptop you use, try to minimise the hard disk activity - if you look on the web about Car PCs there is plenty of info about stripping down Win 98 or Win XP to minimise disk writes and then try to put the maps you are using onto a solid state memory card (may only hold a few days worth) becuase the main problems with the laptops is vibration damaging the hard disk.

Another area to keep an eye on is dust - if you have compressor regularly blow the dust out of the cooling slots.

As for GPS mice - you should be able to pickup a USB one for about £20 on ebay - if mounted externally, you may want to run some silicone sealant around the seams to keep the water out.

My laptop failed me only once on the trip, typically the one day that we needed it trying to retrace our route of the morning at night - our friends had a Garmin of some sort, but because it was only plotting waypoints it wasn't accurate enough for us to find the exact track we had driven that morning. I find the maps on the laptop were able to provide far more detail and it was great being able to see what was around us in detail.

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Cheers,

Julian Voelcker
Overland Cruisers - Specialising in Land Cruiser preparation and servicing.

Good morning all

I'm looking into building an 'in car' nav system using the components listed at this web address.

LinITX.com - Car PC Components

A cheaper option might be to use the new MSI wind or Advent 4211.

As for the nav software - I only have experience with the Garmin sourcemap

coments from any of you experts out there would be most welcome

cheers

John

If maps are available.
Perhaps this might be of interest.
Hema Navigator, On & Off Road GPS

You can now buy solid state hard drives 40Gb, very expensive! maybe you could take a spare drive with operating system already loaded so if you do break one you can just swap it over

no moving parts is the way to go so maybe just buy a map!.....call me old fashioned

Graeme

I've been waiting for the solid state drives to get bigger and cheaper - it is the ideal route to go down.

As for computer based mapping over paper, I like it because I don't have to stop to study the map to see where we are or get my wife to tell me because she has no sense of direction.

Paper maps are easier for planning routes, but I guess a decent tablet PC with mapping software would provide the same benefits. For the best of both worlds I would have a CarPC and Tablet linked together via wireless so that I can plan the route, prepare emails, etc round the camp fire on the Tablet and then track our route, listen to music, etc using the CarPC.

I guess the other option is to just have the Tablet for everything, although they do take up a fair bit of space to mount on the dash when on the move - something like the Panasonic Toughbook CF-18 would be a good start.

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Cheers,

Julian Voelcker
Overland Cruisers - Specialising in Land Cruiser preparation and servicing.

Think that will mean it (mapsource) only responds with Garmin GPSes ..

The maps you mention are all vector based maps. (and I'd add umm Island oafs -MorrcoTopo map to your list .. it is very good and free)

In addition to those you can have raster maps (free old russian ones are avalible - madmappers sa have them with ozeixplorer calibration files ready to go). You can run both mapsource and oziexplorer on your pc thingy .. and thus have both types of maps avalible for your use. And yes oziexplorer will use the garmin gps too.

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Regards Frank Warner
motorcycles BMW R80 G/S 1981, BMW K11LT 1993, BMW K75 G/S

Yes Julian, Touratech is good, but it really seems to struggle with larger self scanned maps - calibration is also quite tricky. Memory Map seem to have this sorted, indeed I have my self scanned Michelin Maps working a treat with the non OS edition .

I don't think it will be too long before all the manufacturers will end up using solid state memory as has been pioneered with the ASUS eee PCs and the MacBook Air

Which brings me on to tablets and touch screen interfaces.

I have been experimenting with pocket PCs; an ASUS R2H Ultra Mobile PC and until recently a lovely HP TX2500 tablet PC (until I left it on a train).

The problem I have been finding however, is that most touch screens are very poor in daylight and general outdoor situations to the point of being virtually useless in sunlight. This is being been resolved in small form factor devices such as the iPhone, but remains a technical challenge for larger screens. Yes sunlight viewable touch screens are about, but not at the affordable end of the market. All of my devices cost over £700 each and none of them are really up to the job. Even Apple are rumoured to be working on a Mac tablet but have yet to resolve the issues.

Another side to the navigation problem is that operating systems and application interfaces have yet to catch up with touch. At least in the overland sector. There as been much development put in to main stream SatNav devices but virtually no progress in PC field. Having tried most of the mapping software out there I have to say that they are all pretty difficult to operate with any less than a mouse or 'two hands needed' laptop touchpad.

Overland Navigator, appears to be barking up the right trees with it's touch screen friendly approach, but it is at an early stage in development and currently only available with a limited number of US topo maps and seemingly no option for other map formats or even self scanned images.

Moreover, the more capable the application, it seems the more difficult to use with touch. OzyExplorer for example is great software but seems to try too hard, with a great many on-screen controls and even half size multifunction button icons. Heaven knows how our biker friends wearing thick gloves get by.

Wouldn't it be great if all the mapping developers had a rethink about their interfaces. Surely it would not be hard to come up with an optional touch friendly skin for in-car use.

Such an interface (with the necessary safety warnings of course) would provide simple controls for zooming and panning, adding waypoints, chosing and recording tracks. An additional menu button would take the user to all the other stuff which would be presented in a TomTom kind of way. A preferences option would also allow user to control the placement of buttons on the screen (top-bottom-left-right) to allow for left hand drive, right hand drive as well different mounting locations.

I really do think it's time the mapping software developers caught up (or rather took a step back).

Paul Driver

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Paul Driver
www.guesswhereweare.co.uk

I know it is no real achievement, but I've used the same laptop, GPS and mapping system for three trips to Tunisia, and it has not let me down once.
The laptop ia a simple Dell cheepo, the GPS is Garmin, Etrex (£100) and the mapping software Fugawi with maps from Daerr, these are the Russian and French maps fron the '70's, the latest available.
K

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www.4x4-travel.co.uk

I don't operate the PDA when I'm moving. Set up the zoom level etc before starting off. That runs Oziexplorer.

I link that to the GPS - a Garmin 60Cx .. that I can just operate using the seam on the glove to press the small buttons - usually just zooming in and out. I try to stop for anything else. Usuall have to stop anyway to think about the navigation - rather than think of trying to stay uprite on the bike and avoid being run down and follow the route and then figure out a new route. Best to stop doing most of those things -ie stop riding and do the other thing.

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On the raster side - I'd not use any software that does not take in self scaned images .. no I don't take a scanner with me .. but I do have a digital camera and that will do the job .. not as well but good enough. And sometimes the maps you get on the trip are much better than the ones you have .. so it has to be able to take these new maps in.

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For screens washing out - yes the PDA washes out .. the GPS is fine. Here the light intensity is about twice that of the northern hemishpere .. ask any photograhper. So if the screen is going to wash out it will do it here. At night though the PDA screen is easier than the GPS to read .. not that I ride much at night .. but that is what happens.

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Regards Frank Warner
motorcycles BMW R80 G/S 1981, BMW K11LT 1993, BMW K75 G/S

I use an ASUS Eee running Windows 2000 and Fugawi.

See SatNav for the SilkRoute.

For lots more information.

An in-vehicle PC running Fugawi Global navigator works for me - there are good maps available for Fugawi from Reisebedarf und Expeditionsausrüstung bei Därr Expeditionsservice in München I used Car-PC Shop (Touchscreen TFT, Mini-ITX, Mobile PC, GPS) for the bits including a ruggedised USB GPS receiver although I also have all the waypoints loaded onto a Garmin 76s as a backup
The latest version of Fugawi GN can also use Garmin img files as overlays