Well the Sharp Pocket PC has turned out to be a duffer after all. The microprocessor in there has had it…
And after several weeks of toying with Omnibot 2000, I’ve declared him scrap also.
Despite all of the individual parts tested and working, the remote seeming to work, the tray working, all moving parts working…pop it all together and try and run the robot and it just doesn’t happen.
I guess there is some issues with the main board, and at this point I’m not prepared to start stripping and testing components to try and figure out whats up.
I may do an EZRobot number on him instead and fit him out with some up to date innards instead..
RIP Omni 2000 and Sharp Pocket PC
For now… I hate throwing old tech away, even if it is a bit buggered! I guess its up to the loft.
Time to bring in a new candidate for testing / overhauling…
Found in the “Box of Crap” in the corner of stores at work this afternoon….
A Sharp PC-1360. An old 80’s pocket computer, and a serial port interface stuck on the side of it.
Have thrown some battery’s in and it works, although at some point it appears that someone spilt a pint of glue over it, so will need a strip and clean before going into use.
It would seem that Omnibot 2000’s mechanised tray is making a nasty terminal sounding grind whilst operating….
This Nerdyness is not going smoothly!
After a strip down (Complete tray strip down….Goddam how many parts does a mechanised tray need???) it appears that the DC motor itself is the cause of the sound… 30 odd year old bearings are probably the cause.
Have also found one of the main drive gears cracked and slipping round its shaft.
1) DC motor soaked in WD40. Leave it to soak in over night.
2) Gear fixed with superglue and then glued onto shaft and drying over night.
Lets see if we can get something operational tomorrow??
The tray not working correctly. Stripped down in pieces at present.
The remote, I think, is working correctly, although its almost impossible to tell without a working one to compare. Currently stripped down in pieces.
Omnibot 2000 doesn’t do much apart from erratic moves when his battery gets low… Tapedeck works, speech from remote to speaker works…. no remote functions. He’s currently in one piece but I think he’s gonna be stripped down before long….
So after stripping Omnibot 2000 down completely, scrubbing, repairing, replacing and reassembling… and then spending a very hot sweaty hour and a half finding the remote control…. The bloody thing doesn’t work!!!!
All the light come on on Omnibot. Light comes on on remote. But one just ain’t controlling the other.
I popped a scope on the antenna of the remote control and was surprised to find that it appears to be permanently transmitting.
It transmits a sequence of pulses and when you push a button, the sequence changes/pulses get faster/PW gets narrower…. Not sure which but you can see changes. Its just very suprising from a battery life point of view, that it permanently transmits.
I’m not really sure if this is a fault or just the way it works….
The only part that does work is the voice over remote function. Push the button, talk onto the remote and voice comes out of robot. And I’m sure that bit DIDN’T function when I first got him…although all the other functions did work….and now don’t…
I also found the tray for Omnibot 2000 so have tested it with a 6 volt supply and have now stripped it down ready for cleaning and reassembly.
Looks like Omnibot is coming apart again so that I can try and figure out whats up with him. BLURGH!!!!