Lawn-Mover with BS2! Project page
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Hi there!
Welcome to take a look at my lawn-mover "RoboCut"
It´s all written in Swedish, but you will most likeky get some
ideas
from all the schematics and images.
The machine is a small design, more like a trimmer, but i'ts supposed
to work hour after hour, and recharge itself when necessary. It
really works so the "minimalistic" strategy seems to be good, (in
fact, HUSQVARNAS commercial (approx $2000) works similar...
We are planning to translate the page to english in a near future.
Does anyone have some experience in a "buried cable fence" to keep the
mover away from the neighbours?
Check it out at http://www.robotshop.nu
Greetings
Hans Forsberg
mux@l...
Welcome to take a look at my lawn-mover "RoboCut"
It´s all written in Swedish, but you will most likeky get some
ideas
from all the schematics and images.
The machine is a small design, more like a trimmer, but i'ts supposed
to work hour after hour, and recharge itself when necessary. It
really works so the "minimalistic" strategy seems to be good, (in
fact, HUSQVARNAS commercial (approx $2000) works similar...
We are planning to translate the page to english in a near future.
Does anyone have some experience in a "buried cable fence" to keep the
mover away from the neighbours?
Check it out at http://www.robotshop.nu
Greetings
Hans Forsberg
mux@l...
Comments
buried cable electric dog fence.Use the collar on your lawn mower. These
output a beep tone when dog is close to fence and a shock when they get to
close. You can also set the range of activation easily with the fence/base
unit (5 ft to 25 ft away from fence). Your robot could then have 2 safety
signals, getting close, and outside its limits. It should be possible to get
at the circuitry of the dog collar and have the beep and shock circuits trip
a relay somehow.
These systems run $99 for the least expensive(radiofence) and around $200
for the real fancy ones(inotek). I use the radiofence for my dog and it
certainly keeps him inside.
Power wise the collar battery lasts 6 months, should not be a drain on your
robots batteries at all.They come with 500ft of wire as well,Or you can use
any 22-26 gauge wire.You can also kill the signal in places by twisting the
cable back on itself.You could make zones that the robot could cross over
this way.
I firmly believe dogs are less intelligent then robots at times HE HEE
Good luck
Kerry
At 12:16 PM 8/7/2000 -0000, you wrote:
>Hi there!
>
>Welcome to take a look at my lawn-mover "RoboCut"
>
>It´s all written in Swedish, but you will most likeky get some
>ideas
>from all the schematics and images.
>
>The machine is a small design, more like a trimmer, but i'ts supposed
>to work hour after hour, and recharge itself when necessary. It
>really works so the "minimalistic" strategy seems to be good, (in
>fact, HUSQVARNAS commercial (approx $2000) works similar...
>
>We are planning to translate the page to english in a near future.
>
>Does anyone have some experience in a "buried cable fence" to keep the
>mover away from the neighbours?
>
>Check it out at http://www.robotshop.nu
>
>Greetings
>
>Hans Forsberg
>
>mux@l...
>
>
>
>
>
>
>
Sincerely
Kerry
Admin@M...
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system using the IR sensor. I look forward to your english translation I
hope that will have some further information. I also wonder how well your
obstacle avoidance works? I built an indoor robot using IR obstacle
avoidance and it still has problems getting caught behind chair legs,rolling
under a rocker,things like that. Normal walls and large chairs are easily
avoided of course. I am curious about outdoors with tree branchs and strange
situations such as that,how you handled things. I am a begginer so any help
is always appreciated.
You may email me directly if you wish Admin@m...
Thankyou
Sincerely
Kerry
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Original Message
From: mux@l... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=DmITq_Pgw_E1pP3nLzhSG2YskKjQ4f9oOinaX4Doaay0yD27LJH-b9wfOe6YiuQ7ja4]mux@l...[/url
Sent: Tuesday, August 08, 2000 2:04 AM
To: 'basicstamps@egroups.com'
Subject: SV: [noparse][[/noparse]basicstamps] Lawn-Mover with BS2!
Project page
Hi Kerry
Many thanx for your tips...have read about radio-fences
before, but never hear of real-life experience of them...
Sounds like the perfect solution for me BUT! Since i'm kind
of a nerd, and also has a large number of peaople following my RoboCut
project AND a really would like to know HOW such a fence works...
I hold a masters degree in electronics and Computer science
so i think i should be able to build a simple circuitry on my own, but of
great help would be a good starting point regarding the frequency, voltage
etc on the commonly used Radio fences.
Is the cable an ordinary cable, is there an coil OR some
sort of antenna in the dog-collar, What is the Voltage and frequency of the
signal in the buried cable etc...
Now your questions about my project!
Regarding the IR-navigation, there is another project on my
site describing an IR-navigtion/self-charging system for a small bot, the
GROWBOT have a look at
http://www.lls.se/~mux/micro/take_home.html
However, the arrangement with the lens will not be used on
the lawnmover. Instead, the mover will rotate in small steps while looking
for the IR signal, when signal is detected it will continu to rotate until
the signal is lost...Now the mover knows the "detecting angle" and rotate
half the angle in reverse direction which ends up with surprisingly
precision! Pretty smart or...
The IR-navigation for the mover is right now under
development.
Obstacle avoidance with two IROD-modules works well,
overall, my feeling is that this is an easier task outdoors than
indoors...and one more thing, i always program my bots with some form of
random/unexpected manouvers...this seems to be the best way to get out of
trouble...suddenly backing in Zick Zack patterns or similar, and make sure
you use a random trigger!
Ursprungligt meddelande
Fr