 | | Re: Struggling with encoder wheel
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Pretty neat Chris. You've very nearly recreated a special kind of optical encoder that was developed by my former employers called a virtual absolute encoder. It didn't use diferent colors but it used a "time-window" to read the last few states off (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Pneumatic Pump Testing Goes Hi Tech
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(...) Thanks for the information. I'm going to see if I can get hold of one of these... (...) I use pneumatics mainly where brute strength is needed rather than smooth motion, such as the raising/lowering mechanism on a crane (although this (...) (24 years ago, 12-Apr-01, to lugnet.robotics, lugnet.technic)
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| | Re: Struggling with encoder wheel
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(...) If I had room for a 64 element array, I'd just use that and make a lookup table. Unfortunately I don't, and I can't figure out a way to pack things in and still look them up with any speed. I also can't find any way to mathematically convert (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Struggling with encoder wheel
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(...) Can't you just use a large switch() statement inside a function to simulate a 64 element array? If none of the values in the array ever change: int array ( int x ) { switch ( x ) { case 0 : return element_0 ; case 1 : return element_1 ; case 2 (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Battery Tests
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I really cant make any comparison to batteries, ever since day one I've used Rayovac Rechargeable Alkalines. I bought two 4 packs for.. $6 each? and the recharger that only charges 4 at a time for another $8? I forget, bought it all around the (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Looking for orthogonal motion
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Hi all, I haven't been able to find anything on the net about a Lego implementation of an orthogonal drive system using only motors (i.e. no pnumatics). Orthogonal is when your your chassis can go straight forward and back, and also side to side, (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Motor with Gear Reduction ??!??
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Hi, I could not find the link but as far as I remember there was an information page about the sensors and motors and solar panels on pitsco ( or something else ?) site. I am unable to find the same. The pages had all the technical characteristics (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Motor with Gear Reduction ??!??
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Found it! (URL) technical specs and then select Motor. -Rahul (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Motor with Gear Reduction ??!??
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Found it! (URL) technical specs and then select Motor. -Rahul (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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| | Re: Looking for orthogonal motion
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Hi David, we had the same problem and solved it not using your raising-lowering idea (we also thought about it ;-) ) but we build a synchrodrive. Have a look at it if interested. (...) (24 years ago, 12-Apr-01, to lugnet.robotics)
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