also that parallax design is like the IROBOT ROOMBA ,i think he based it off that design

also i look at the other ling i did see before abnd i see he design is also using roomba design using beacon ,just like in the parallax link

some others may not know this but using a beacon design like the roomba or other circuits using something close to it,IT needs a clear line of sight for it to work

no tables or chairs,wall or anything that can block the IR,but i am thinking and might very easy to add is a software using IR and SONARS AND WITH A SCRIPT can make the robot go around a object in the path

ON roomba they kinda fix that problem with a omnicone that does 360 deg line of sight and they use a second beacon,,2 beaons sends out 2 signals and as the robot see one of them he turn left or right till it see's the 3 beacon and go fowardm,something like a tractor beam

@robotmaker, for the last time I have not said it will see through walls. Re-read my posts, the QR Code idea was to tell the robot where it is and which direction it's facing without using any expensive GPS or compass modules. If it cannot see one it will roam until it does, thus giving it a bearing on where it is. I will not be repeating that again and until you understand that please refrain from your sarcastic comments, they help nobody.

And your sarcastic remarks too, ,please read my posts too you dont really need a compass but it does help and they are pretty cheap

AND there is a interface for the compass in EZB

ON THE GPS there is no indoor GPS yet that can be bought and GPS CANT BE USED INDOORS

my ideas might not as cheap as yours,since it cost $0 FOR your design , but it still idea i post for others who want to use it

Just like you post your idea on your idea too

i will find the post you didnt say 100 % to see though walls said it read from another room,that is why i bought up about seeing though walls

it seems on every post on any comment i make you dont like it,

on my design it may may not cost $0.00 ,but it does work better,maybe you dont think so that you

you have your point of view and i have mine and work on autocharging ock system for a very long time and a lot longer then you so i way more a expert at then you

on your design you need many QR codes for each room of the house

on my design YOU DO not need it,plus at the same time it does auto connect and auto disconnect of the charging system besides setting the outputs and current for different types of batteries

i will be posting my design very soon

You just don't get it do you. It's not about finding a single solution, it's never been about finding a single solution, and I've not fixated on a single solution (in fact I've suggested more than a couple of ideas/solutions)

If you don't understand my posts (and you will know when you have to ask questions about it's content) then re-read them a few times. I make my posts as clear as possible and easy to understand yet you still get confused.

And, again, the QR code idea was not the only idea I've had on this subject so stop focusing on it, we all know it's not ideal but it's an option.

Point out the ideas in this topic that I've not liked of yours. I've flagged up that $4000 is too much for some for a guidance system, other than that justified remark what else? Don't answer that, I really don't care. Your hostility is of no help to anyone, you can't accept my constructive criticism and end up having these discussions full of me explaining everything a hundred times and you bitching about my comments... How does that help anyone?

never ever said to spend $4000 or even $1000 or even $500,to it a lot of money to pay for a navigation system ,unless you are like me,i love to testing and making very good professional robot designs

So many designs out there that others made using $1200 LIDAR and using other sensors cost a lot more.

i looking to make my designs just like thiers,i know most in this group we are in dont have the much money to spend on sensor of that high cost,but with me i like very high accuracy sensors.

big reason why i like high precision sensors is because i make very high precision testors for work.

so down to this topic ,if you have a cheap idea you like then post it,just pointing out some bad things about as there are some good things about it too,for me not going to put QR photos all over my nice walls. just like you dont want to spend money or $0 amount

my design cost a little more,but has a longer range all over the house and in any room or any part of my house

RGORDON brought up a good design he found too ,it works good ,since i tested it and ROOMBA uses a design like it,and had ideas for a few changes to make it a little better,since i know sensor s really well. and it low cost.

Only sensor i dont like that great that a lot ofrobot builders use is the KINECT its a great for NAVIGATION and so many robot schools are using it

couple of items why i dont like it and other agree ,first its a big sensor that takes up a lot of room so doesnt work well on smaller robots or look great on most of the designs here ,except roomba

second it really draw a lot of current 1.25 amps on 12 volt side and another 350 ma on 5 volt side

better and lower cost is neato xv-11 lidar about $100 and uses only 300ma

ALSO there is software for both of them too

An idea for GPS for generalized positional awareness.... All of my Android devices, becaue they use Assisted GPS (combine cell tower triangulation with GPS radio for faster fix, and fix in non-ideal conditions, like inside) work inside my house. They are not too precise inside the house, and in fact a GPS won't be precise enough outside without an expensive DGPS and long sample times, but it can at least tell which end of the house it is in, which narrows it down to just a couple possible places. There are apps that will let you share the GPS signal over Bluetooth with the computer. Combine that with a compass to know direction, and glyphs, and it can know which direction to face to find the glyph which confirms the room, and then have some way (maybe color markers) to find the door-way and start navigating to the room with the power source.

Just throwing stuff out there to see what sticks.

Alan