29 Nisan 2008 Salı

Revival of Mr. Walkman

Recently Mr.Walkman broke another gear of him while he was hanging around. So I have decided on removing the toy gears and walkman motors (this does not mean I have failed on making a walker out of a walkman, it worked for a while right?) and installed 2 humongous solarbotics GM2 gear motor. After doing that I have prepared new more suitable legs, added end-switches to the legs to keep the new powerful gears unharmed, mounted new battery holders for 4x 1.2V 3000mA ni-mh batteries (due to my calculations it can run continously about a week without any need of recharging with these babies) and done a few more trimming. Now he is back on his foot with more speed, power and better obstacle avoidance.

16 Nisan 2008 Çarşamba

Mr. Walkman

The walker on my previous post had a quite low performance on walking. 2 days ago, I have accidentally found 2 really cheap toy trains on my local market and bought them immediately. I have disassembled their gearboxes and worked out a connection with the walkman motors own gears. The result was a success. The attachment of the gears and legs, and the trimmings required to make it walk with its new heavy-duty legs took about 10-12 hours.
Then I have worked on its obstacle sensors in order to make it reverse and go to another direction in order to prevent it from getting stuck.
Finally I have made a simple head with flashing eyes to add some smooth personality.
+In addition, I have done the connections required to attach a pic chip to the robot, to make it software controlled in near future.

Here is a video, demonstrating the obstacle avoiding of the robot (yes, it falls from the table in the end of the video. but thanks to the flexibility of its epoxy jointed body, it didn't get any damage)

12 Nisan 2008 Cumartesi

Walkman Powered Walker

Made out from walkman motors (most would think its impossible to do a walker with them). This walker has a photofobic behavior (it runs away from the light basically).
This is a test video, I am still working on the gears to make it more efficent. More video and pic will be added soon.

2 Nisan 2008 Çarşamba

New images and video of the walker

Here are the high res images and video of the robot on the previous post.

1 Nisan 2008 Salı

2 Motor - 4 Legged Walker

This sunday we have started building a walker with a friend of mine. After a few days of work the body and main electronics are completed. Now it is only walking forward as a default movement, but next weekend we will install a pic chip to control the behaviors of the robot.
Sorry for the low photo and video quality, I will post better ones soon with the circuit and more info about the robot.