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<blockquote data-quote="clbarclay" data-source="post: 7985045" data-attributes="member: 6671"><p>Anything maintaining sub 30cm accuracy all day is going to need some form of auto steering rather than just guidance. With some practice i'm sure some people can steer a tractor manually to within that following a light bar or screen, but for how long? I found following lightbars very hard work and they only came into their own when there really wasn't an visible mark to follow.</p><p></p><p>Sub 30cm accuracy is going to need a correction signal of some sort as well. Without a suitable correction signal, basic gps is <10m accuracy. For manual guidance, the free egnos correction is okay, but once you have the guidance system directly controlling the steering then it's limitations will become evident, particularly long term accuracy.</p><p></p><p></p><p>I have one fairly expensive trimble system with wheel motor, which has proven the worth of autosteer to me but am now moving to AgOpenGPS, which is an open sourced project. You can download the program for free and run it on an old laptop or tablet with a windows operating system. It still needs a decent GPS reciever to be accurate though and as it is not a commercial product, it is not plug and play. There is however a good online forum for it which is very helpful. The Ublox F9P is about the most common receiver used for AgOpenGPS and at for about £500 you can get a pair of them and sundry parts, to have one on a tractor and another setup as your own RTK base station, giving you sub inch accuracy without a subscription to anyone else's correction signal. If you just want basic guidance, then old laptop running AgOpenGPS and a cheap receiver that used egnos can be one of the cheapest solutions.</p></blockquote><p></p>
[QUOTE="clbarclay, post: 7985045, member: 6671"] Anything maintaining sub 30cm accuracy all day is going to need some form of auto steering rather than just guidance. With some practice i'm sure some people can steer a tractor manually to within that following a light bar or screen, but for how long? I found following lightbars very hard work and they only came into their own when there really wasn't an visible mark to follow. Sub 30cm accuracy is going to need a correction signal of some sort as well. Without a suitable correction signal, basic gps is <10m accuracy. For manual guidance, the free egnos correction is okay, but once you have the guidance system directly controlling the steering then it's limitations will become evident, particularly long term accuracy. I have one fairly expensive trimble system with wheel motor, which has proven the worth of autosteer to me but am now moving to AgOpenGPS, which is an open sourced project. You can download the program for free and run it on an old laptop or tablet with a windows operating system. It still needs a decent GPS reciever to be accurate though and as it is not a commercial product, it is not plug and play. There is however a good online forum for it which is very helpful. The Ublox F9P is about the most common receiver used for AgOpenGPS and at for about £500 you can get a pair of them and sundry parts, to have one on a tractor and another setup as your own RTK base station, giving you sub inch accuracy without a subscription to anyone else's correction signal. If you just want basic guidance, then old laptop running AgOpenGPS and a cheap receiver that used egnos can be one of the cheapest solutions. [/QUOTE]
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