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4mem8
05-31-2008, 02:58 AM
4mem8 Robot


BOT NAME: [4mem8]
BOT TYPE: [Wheeled]
HEIGHT: [4ft 6in]
AI: [Remote, voice]
SENSORS: [Pir, Touch, Camera coming soon]
WEIGHT: [30lbs]

http://img96.imageshack.us/img96/2456/email4mem8robot0018xx.jpg

This is something I have been tinkering with it is mainly constructed of aluminuim has several circuit boards. Consists of a base, rotating torso, rotating head up/down movement of head. Mainly uses piledrive gearbox type motors, These are amasing motors as they opperate from 3,6,9,12,15v and with the combination of gearbox's that you attatch the torque is incredible. However they have their limitations as I was using two of these to power my system the weight out grew their capability and striped the gears at 30lb weight. So now I have two 18v double bearing dc motors out of a printer with shaft encoders. For the arms [If you can call them arms] I have used two printer carridge worm drives which gives you the up/down motion and attatched to these will be the pile drive motors for the elbow/wrist/hand movement this will take time to impliment. I have built a 96 channel ir remote using 32 bit keypad flip a switch and you can use the same pad for another 32 functions and switch 2 for another 32 ect. This gives me 96 commands if I need them.At this stage I have two 32 channel receivers and one 16 channel, all outputs are through opto couplers to reduce interference. Great for testing different functions. However last year I had a dissaster when we had a plague of rats in our area and they were very hungary they went through my bot at the base level and destroyed the regulator system by eating their way through. I have repaired some of the system but one only has so much time spare. I will get there!. I WILL HAVE TO TAKE SOME PICS SO YOU ALL CAN SEE.
I have just secured a deal on Trademe [similar to your ebay] for $4,000 worth of electronic parts for $250nz dollars which I will get next week, This will help [more than help] me rebuild him. 6 x 5kg box's of goodies. This project is constructed with TTL logic ic's only and no CPU's, It relies on Fuzzy logic for navigation.


http://img96.imageshack.us/img96/2456/email4mem8robot0018xx.jpg


Full pic of body



http://img100.imageshack.us/img100/6671/email4mem8robot0021ts.jpg

Lower logic circuitry


http://img137.imageshack.us/img137/2971/email4mem8robot0036ss.jpg

Other side of logic circuitry


http://img96.imageshack.us/img96/8126/email4mem8robot0049ra.jpg

Head section with some circuit boards removed, Namely speech,Digital recorder's x 2. also PIR detectors shown.


http://img96.imageshack.us/img96/81/email4mem8robot0057we.jpg

Mid section ir channels 1 x 32 channel 1 x 16 channel


http://img96.imageshack.us/img96/9590/email4mem8robot0061zb.jpg

Motor driver board


http://img96.imageshack.us/img96/4610/email4mem8robot0079xq.jpg

Manual control board


http://img96.imageshack.us/img96/8246/email4mem8robot0088xo.jpg

Head rotation motor plus light/dark sensors [Hanging]


http://img53.imageshack.us/img53/8275/email4mem8robot0095be.jpg

Relay drivers for the main drive, As you can see this is where the rats ate my wiring + pissed and s**t on the base plate %$#@#$ http://80.190.202.79/smiles/cry.gif. You can also see where some wires have been eaten, Yet to be replaced.. This was a rat infestation we had in the neighbor hood a few years ago.



http://img153.imageshack.us/img153/8030/email4mem8robot0010vo.jpg

Ir remote with another 32 channel ir receiver.


http://img153.imageshack.us/img153/2986/email4mem8robot0025cn.jpg

Underside of ir remote and 32 channel ir receiver.


http://img90.imageshack.us/img90/2406/emailrsv2internals0141bs.jpg

Digital voice recorder x 2 for speech 16 phrases per board at 30 secs each if needed.


http://img96.imageshack.us/img96/6121/email4mem8robot005a0ij.jpg

Main motors and shaft encoder.


http://img223.imageshack.us/img223/1606/email4mem8robot006a7jh.jpg

Close up of shaft encoder.


http://img96.imageshack.us/img96/3495/email4mem8robot007a6uv.jpg

Looking up.


http://img96.imageshack.us/img96/3262/email4mem8robot001d7vx.jpg

Rotating head section with up/down motor and limit switches.


http://img80.imageshack.us/img80/1949/email4mem8robotandme001b9hp.jpg

The mad proffessor [I wish!]
I will have to get back to this project as it has been a while since any updates.

Adrenalynn
05-31-2008, 10:24 AM
These are great! But are you going to turn them into tutorials?

4mem8
05-31-2008, 06:40 PM
These may be a bit difficult now as they are put together and to take detailed photo's would mean a complete dismantle.But I see your point Adrenalynn.

Adrenalynn
06-01-2008, 11:01 AM
I was just wondering, since they're in the tutorials section.

4mem8
06-01-2008, 08:41 PM
Good point Adrenalynn, I may have to remove it.

Adrenalynn
06-01-2008, 09:51 PM
I'd hate to see you do that!

metaform3d
06-06-2008, 02:14 AM
Wait. No CPUs? No microcontrollers? Strictly TTL logic -- like a big network of NAND gates?

You're a crazy man. Looks fantastic though.

4mem8
06-06-2008, 11:20 PM
metaform3d: Yeah your right, I am crazy, This was in my earlier days of robotics, cool fun though to get it working, until the plague of rats went through my basement about 18months ago. Still have to repair it. I will get onto it sometime.