Let's Make Robots!

Need Ideas for random junk

wohn's picture

Sooo lets see. I have no creativity but a burning hole to learn and build. I have some crap laying around and need some of your creativity. First ill show you the way I got these parts.

I had one of these

rc-helicopter7.jpg

And then I somehow turned it into one of these,

helicopter_crash.jpg

And now I have these

RC%20mini%20fairy%20helicopter%20I.jpg

board.jpg

 

 Size is about 1 inch x .5 inch x .25inch including battery.

It has 2 channels, BUT i think one will always be on when the other is due to the tail rotor of the original design of it. It most likely controlls the output devices by PWM. I am guessing the voltage of it is probably atound 3.6v.

There is also a 8pin soic IC on the bottom of the board which I suspect is a Baseline PIC 10F or 12F device.

I will hook it up to my scope tommorow and actually figure out the outputs and see if its PWM and the current capabilities.

 

Now I need Ideas for what to put it in, the stranger the better.

 

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OddBot's picture
It's not strange but it would be one of the easier things to make. Use polystyrene for a body and find a way to use the tail rotor motor to opperate rudders. The drive motor and prop blow backwards with about 1/4 of the air redirected downwards for lift.
wohn's picture

cool idea, I lost the motors and props, but those wont be hard to find in a hobby shop, just some small high rpm pager motors, Im thinking like 30,000 rpm for some good lift. I will have to dream up an idea to controll the left/right movement. Also a small servo, i mean tiny servo, could be used to direct the air flowing down to create forward speed and just have the lift motor run full speed all the time. Is there smaller servos than the HS-55? like about half that size?

wohn's picture

http://www.robotshop.ca/solarbotics-regular-pager-motor-rpm2.html

 Thinking bout these for the main rotor. However they have a 420A stall current, gotta be a typo.

robologist's picture
Solarbotics link - RPM2 : 420 mA stall at 5 volts
rik's picture
Get a thousand of them! At discount prices. And then spread them around among LMR members!