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Hi. Building a tracked robot as your first robot is probably not going to be an easy task. There is a reason our kits cost so much, there is a lot that goes into it. The first thing you have to do is build a track system with drive wheels. There is some help for this on this blog post.
http://www.www.superdroidrobots.com/blog-a/forums/topic/make-you-own-robot-trackstreads/
Sizing the motors is difficult too. Tracks take a lot more torque to drive and to turn. There is a post for sizing motors here
http://www.www.superdroidrobots.com/blog-a/forums/topic/how-to-size-a-motor/
Then you have to build the entire chassis and support the wheels, drive them, etc. It takes a lot of design and experience to do this. Usually trial and error too. when you are all said and done, you will have probably spent more money building it yourself to get it right than just buying the kit outright.
http://www.superdroidrobots.com/shop/category.aspx/robot-kits-treaded/73/
Of course there designing and building one from scratch does provide a more rewarding experience. If you go this route, please share your results with us. Thank you
Glad this method worked out for you. Did you leave it as direct drive? Technically, its an over-restrained design when doing it like this, but it sounds like you were able to get everything lined up and working. We sell the bearings on our site (a little more expensive than ebay) http://www.superdroidrobots.com/shop/item.aspx/steel-ball-bearing-flanged-double-sealed-for-1-2-shaft-dia-1-1-8-od/1464/
of course for a truly HD duty dual bearing design, we have our HD ATR design that has the axle supported by two bearings and is chain driven. Of course your method is more cost effective. http://www.superdroidrobots.com/shop/item.aspx/heavy-duty-4wd-all-terrain-mobile-robot-platform-with-42mm-motors/1477/
Really appreciate you sharing your ideas. Thanks
Post some pics! We would love to see them. thanks for sharing…
We do not have any AA packs that can handle that kind of discharge rate. our 4500mAhr NiMH packs will handle 5A discharge no problem at all. We only have 10 and 20 cell packs though
http://www.superdroidrobots.com/shop/category.aspx/nimh-and-nicad-batteries-and-packs/98/
The maximum discharge rate of these batteries is about an amp. They are intended to power controllers, etc. they are not intended to power large motors, etc.
Hi. This will work fine for transmitting video. Any standard composite output camera will work.
Any of these cameras will work
http://www.superdroidrobots.com/shop/category.aspx/cameras/82/
Pictures would be great. Thanks.
Hi. Lets start by saying making a good set of tracks if very difficult. There are a lot of things to worry about bedsides slipping. Derailment is a much larger issue. Any time you do a privet turn with tracks there is a huge about of side load. uneven terrain, debris, and pivot turns even worse. There is a reason our tracks cost a lot of money…
http://www.superdroidrobots.com/shop/category.aspx/sdr-manufactured-tracks-and-wheels/161/
We can customize the length of our tracks and provide matched wheels too.
If you want to take it on yourself. Take a look at our tracks and see what we do. There is no easy way. The tracks have to have timing cleats or holes in them that match the timing of the drive wheel(s). Generally you need side guides too to keep the tracks on the wheels and avoid derailments. There are a lot of robot vendors out there that do not do side guides. There is absolutely no way their tracks stay on in any aggressive terrain or maneuvering. We have gone head to head with them in many demonstrations and have seen it first hand. Our tracks have been through rigorous NIST testing and qualifications. We thought we had a good design until we went to the test and did the step fields. We enhanced our design and when back and tested again with no issues.
We are now getting our tracks made via a mold, so no splice. The tracks are made to our exact specification and the length can be modified. Obviously, if doing it yourself, this is not a cost effective way of doing it with mold charges, etc. So you can purchase track by the foot here. We also have the splices.
http://www.superdroidrobots.com/shop/category.aspx/other-manufactured-wheels-tracks-and-treads/162/
Internal cleats can be added by just screwing in pieces of plastic or rubber on the other side. It is important to keep the timing consistent. We make a entire jig that holds all the pieces together and keeps the timing. Then you have to make wheels that match the internal cleats. This entire process takes a lot of time! Getting it right the first time is highly unlikely. It can be done and no doubt tracks are cool. Of course if all this scares you, we sell tracked robots that are ready to go. Build one set of tracks yourself and you will understand why our prices are what they are…
http://www.superdroidrobots.com/shop/category.aspx/robot-kits-treaded/73/
Good luck and let us know if you any questions or post your suggestions or designs.
Hi. The IG42 WiFi robot can be found here
http://www.superdroidrobots.com/shop/item.aspx/4wd-wifi-controlled-mobile-robot-ig42/1222/
There are a lot of different battery options at the bottom of the page. The fun time will really depend on how its driven. If you are racing all over the place and spinning around in circles in deep grass you will be drawing a lot more current than just sitting there. So its really hard to give a number. If just sitting there with light driving you should get 4+ hours with the standard batteries. You can upgrade the batteries if you want to do heavier driving or want more run time.
The range of operation is just standard WiFi. depending where you mount your router, etc. will depend if it can make a 1200ft drive. You can also install repeaters and access points. A easy way of testing is if your smart phone or laptop can get a wifi signal at the end of the drive, the robot will too.
For additional WiFi Robots please visit:
http://www.superdroidrobots.com/shop/category.aspx/wifi-robots/90/
For our WiFi support page please visit:
http://www.superdroidrobots.com/shop/custom.aspx/wifi-robots-overview/14/
