Archive for the Locomotion Category

Blimp

Posted in Air, Android, Arduino, Hardware, Locomotion, MESH on March 28, 2013 by asteriondaedalus

So, one project that has always been on the back burner is a submersible.  Now the reason is simple, electricity and water don’t mix.  Still, as discussed in News Splash , that is on its way.

However, in the meantime the closest thing to having to deal with movement in a fluid is a blimp.  Various ideas for RC blimps are around but I wanted a cheap vehicle to get into it (and to have something to give my nephew to get him into electronics and robotics).  Blimps are actually quite expensive to buy so I thought on it and one day, down by the beach at a $2-shop I saw and bought a pool toy.  I figured I needn’t be serious about it, but also the molded-in handles actually gave me a good place to hang any gondola that would be slung under it.

blimp

Of course, the flight control will be via an AIO.  I can then stage development, first RC than semi-moving-onto-full autonomous.

AIO

Now you can buy a daughter board for the AIO to carry your XBee and GPS but I opted for a dual XBee shield.  I will remove the pins used for mating to Arduino boards.  The prototyping area will be handy and the two XBee sites will be used, not by XBee RF module of  course but a Synapse SNAP module and a XBee as Bluetooth module.

dual xbee

The Bluetooth will be to talk to the on-board Android phone that will eventually hold the Autonomy.  Initially it can provide the camera and the GPS.  The phone can also act as the Bluetooth hub for indoor work or talking directly to my computer or tablet by wireless.

water proof phone

To push the blimp through the air I have ordered vector thrust units.  I will have two up front to gimbaled the vertical axis for aileron/elevator mixing and a single pusher at the rear, gimbaled in the horizontal to give “rudder”.  That is, that will be the initial configuration.  The power train configuration, especially its location etc. will need to be the focus of some experimentation.

gimbal

I got cheap ESC to start, they will only do for outdoor or restricted indoor work.  I’ll need reversible ESC to allow the blimp to back out of trouble when maneuvering indoor (eventually).

HK-12A… more to come as project comes together.

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Now that’s what is needed!!

Posted in Arduino, Hardware, Locomotion, Prototyping on February 18, 2012 by asteriondaedalus


1-340x340

So, a Usurper!  I fiddled with the Films and will find something else for them to do.

This new board from DFRobotics is PERFECT for a Swashbot project.  I have one coming along with a XBee/USB board (you can see the XBee socket underneath.

So, will need to build gaits into board and pass sensor data back to laptop for moving around room.

crabful-swashbot

I will use larger servos as I am hoping the thang’ll carry a small android phone as well.  I have been playing with video streaming from android devices and so the field is open.

With 12 pwm outputs it can have a couple of extra servos with IR scanners, and with 8 analog inputs the IR scanners can be backed up with resistor whiskers for close in bumps.

There is also a prospect for some sort of animatronic bird chaser.  Pesky birds are eating the vegetables in the yard so something to flail and make noise when it detects motion close by.

BroooMMMM!!

Posted in Arduino, Chase That Dog!!, Locomotion, Prototyping on July 24, 2011 by asteriondaedalus

I have  a ROMEO 1.0 board mounted on a cheap 10x toy rc truck, which I am using for the basic experiments (Rock Crawler unassembled in cupboard until experiments mature a little).

I took the RC gear out of the truck, including the clunky left-right only steering.  I am replacing the steering for a RC sail boat servo which has 360 degree rotation (1x) – rather than 180 degree of the standard servo.  It also comes with a pully so I can use it to provide proportional steering to the chassis.

PWM experiments disappointing so far.  The toy status causes a problem as the gearing is quite high, so once juice enough to turn the wheels, it lurches ahead quite fast.