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<\/p>\nWelcome to my newest adventure, the design, construction, and testing of a robot that can go beyond my house and explore the great outdoors!<\/p>\n
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This is a collection of documents, some of them short, some of them long, where I will describe every phase of the construction of the robot.<\/p>\n
“Design Requirements” is an official-sounding way of phrasing the simple question “why am I building this robot?”.\u00a0 No matter how it is phrased, the response is the same.<\/p>\n
The robots that I usually work with are great at moving around on carpets.\u00a0 Or at least some of them are. Those 15-dollar “robot car” bases that I’m apt to use have difficulty with high-pile carpeting or throw rugs.<\/p>\n
None of these designs could make it very far outside. While they might be able to maneuver reasonably well on a sidewalk or paved surface, they would be hopeless on the grass or on a dirt or gravel path.<\/p>\n
So they wouldn’t be very useful in prototyping any outdoor robotics designs. And there are a lot of uses for outdoor robots.<\/p>\n
While I have to confess that my needs probably fall into the last category, it’s not all about making something to give the pooch next door a shock. It’s also about getting over some of the design requirements that are unique to making an outdoor robot.<\/p>\n
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An outdoor robot, no matter what your reason for building it, has some design requirements that are indeed unique:<\/p>\n
Many of those requirements, such as surviving rainfall and not overheating, will be a challenge to pull off simultaneously.<\/p>\n
But that’s where the fun of it is!<\/p>\n
I’m building the robot around a 6-wheel chassis, mostly because I can buy one premade and I would rather concentrate on the electronics and programming and keep the mechanics simple.<\/p>\n
Having said that, I somewhat regret it.<\/p>\n
If I had the mechanical aptitude then I would definitely gather together six motors and put together a chassis with a suspension.\u00a0 But as I’m rather inept mechanically I decided t purchase one, and in my price range, there were not a lot of options.<\/p>\n
While the chassis I chose does have a number of merits, it also has a few severe deficiencies. I’ll explain those in detail in another article.<\/p>\n
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But it isn’t all doom and gloom, and I’ve managed to construct my robot around this chassis despite its shortcomings.\u00a0 And the chassis does have a nice suspension and big fat wheels, so it should be good for outdoor use.<\/p>\n
And just to get it out of the way at the start of the project, when I say “six-wheels” I mean six powered wheels, powered in two sets of three. So I’m not controlling the individual wheels, at least not right now.\u00a0 Six motors, two groups of three in parallel.<\/p>\n
One other reason for building its robot is the number of technologies that will be required to complete the task. Many of these technologies are ones that we haven’t, as yet, covered here in the DroneBot Workshop.<\/p>\n
So now we have an excuse to do exactly that!<\/p>\n
You’ll be seeing many of my videos and articles gravitating to technologies used in this project. We have already seen this, with the introduction to RC remote controls done earlier this year, as well as the episodes on using GPS and using waterproof ultrasonic sensors.<\/p>\n
Here are a few other topics you can expect to see soon:<\/p>\n
As well as all that, you’ll also see some of the construction techniques I employed to put it all together.<\/p>\n
In order to assist those of you whole are foolhardy enough to want to build your own rovers, I’ll be providing complete parts lists with every section. And I’ll try and make as many videos and take as many pictures as required so that you can see how all the fiddly bits go together.<\/p>\n
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I’ll provide wiring diagrams and code samples as we progress.<\/p>\n
As the project gets moving, I’ll release more articles and videos. Be on the lookout here, as I’ll likely release many articles without videos.<\/p>\n
I’ll also be assembling some more “formal” documentation, details on that will be released when it is ready.<\/p>\n
And I’m going to post a number of updates, including video clips, on the DroneBot Workshop Forums.<\/p>\n
If you want to keep up to date, the best way is to subscribe to the newsletter. When I released new content, I’ll always mention it in the newsletter.<\/p>\n
So, with all that said, let’s get to work and build a 6-wheel rover to scare the neighbors’ dog!<\/p>\n
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