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Archive for December, 2009
Posted by Xpress.. | Dec 05, 2009 @ 09:06 PM | 138,647 Views
Ok, made another battle bot today, using more HS55s. They still have the stupid wandering problem, so it's impossible to center them. But it works good

The flipper arm I have can easily flip a 75g box, which is good because the max weight is 75 grams for bots.

Here's some pics. I'll make another entry with a video.

Also, here's a video of a saw i'm working on to chomp through bots and flip them all around

Micro Battle Bot chomping saw (0 min 23 sec)

Posted by Xpress.. | Dec 04, 2009 @ 11:14 PM | 139,117 Views
Okay, so i made this little guy today for battle at an upcomming show.

They're pretty easy to make, and only require a few simple things a lot of people might have lying around.

Materials list:

Pieces of 3mm and 6mm dperon (or cardboard)
2, 7-9 gram high speed servos
Scraps of carbon fiber flats, or balsa wood (for strength)
Hot Glue
Micro receiver
2s 200-400 mah lipo
Small BEC
Small motor with Rx connector wired up (for a simple saw)
Elevon mixing

Now, you can build pretty much any shape robot you want- I myself am going for a small design under 75 grams, and smaller than a 4" square box (for the competition).

First step is to modify your servos, so that they will drive continuously, and not stop when you push the sticks to the full (they will stop moving once at center).

Follow this link for step by step instructions to modify your servos:

http://letsmakerobots.com/node/4873

Once you have done that, you can now either make some wheels out of foam or cardboard, and glue them to a servo arm, or cut some pushrods the same diameter as the hole in the servos output head, and use some wheels that have the same diameter hole as the axle, and glue them into place (carefully! you don't want to freeze the output head in place!).

Now, assemble everything onto the chassis, and then begin to build foam around everything. First, make the sides of the bot, so nothing gets in the way of the wheels. Now, make the front, and rear. Typically, you...Continue Reading