 | | Light Sensor Non Destructive Mods
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Hi All, I've just added a new page to my website that describes a non-destructive mod to the light sensor that actually allows it to read ambient light! (URL) The range is <10 for a dark box and >90 for a halogen lamp about 6 feet away. It's really (...) (26 years ago, 28-Mar-99, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
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| | RE: Why do it? Was: multi-device output controller
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(...) Measuring PWM is not difficult, but it would involve a micro (PIC12C508 anyone?) dedicated to the task and then you would have to get it to drive the RCX, which means motor drivers, etc. If you are willing to spend $50 and LOTS of time, then (...) (26 years ago, 27-Mar-99, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
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| | Re: Why do it? Was: multi-device output controller
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Ralph, Thanks for reigning in the rabbit chase! As the originator of this thread I'd like to respond to the 'why'... I keep running out of ports on my creations. I see 5 or 6 as a practical limit. My criteria for a solution: 1. Entirely compliant (...) (26 years ago, 26-Mar-99, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
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| | Why do it? Was: multi-device output controller
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(...) I have checked this out, and if you use the standard RCX firmware (or other firmware that uses the RCX ROM, then you get the waveforms you are talking about at 125Hz 1/(1ms x 8). You also get polarity information - oh no, I've said too much. (...) (26 years ago, 26-Mar-99, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
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| | RE: FORTH editor/IDE
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(...) I'm not in the process of writing an IDE, but I'm not sure you need one either. (...) I'm going to make the pbFORTH a bit more user friendly shortly, by adding a MARKER word that essentially clears out all of your own definitions. (...) The (...) (26 years ago, 25-Mar-99, to lugnet.robotics.rcx.pbforth)
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| | FORTH editor/IDE
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Is anyone considering, or in the process of, writing an editor for pbFORTH on the PC? I am thinking of doing one in the style of RCX Command Center ((URL) but don't want to reinvent the wheel if there's one on the stocks. I haven't tried pbFORTH (...) (26 years ago, 25-Mar-99, to lugnet.robotics.rcx.pbforth)
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| | RE: H8300 Stack and SLEEP
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Kekoa wrote: <<snipped original description of problem>> (...) <<snipped description of tests>> Once again, Kekoa goes the extra mile and proves what many of us are happy to be merely confident about. Someday, I'd like to be reincarnated as a grad (...) (26 years ago, 16-Mar-99, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx.pbforth, lugnet.robotics)
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| | Re: FW: H8300 Stack and SLEEP
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(...) To be more precise, it applies to sleep mode and software standby mode as long as you set port 5 bit 2 to high before activating either mode. It does not apply to hardware standby mode, since that does not save registers or end with an (...) (26 years ago, 16-Mar-99, to lugnet.robotics.rcx.legos, lugnet.robotics, lugnet.robotics.rcx.pbforth)
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| | Re: H8300 Stack and SLEEP
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(...) After talking with Ralph over the weekend, I suggested a test he might do to figure out if port 5 bit 2 really does what he suggested it might. I don't think he did this test, so I fired up my RCX and hacked it together. I verified that port 5 (...) (26 years ago, 16-Mar-99, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx.pbforth, lugnet.robotics)
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| | FW: H8300 Stack and SLEEP
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(...) Markus, (and anyone else listening) I think it applies to the RCX power_shutdown() function as described in Kekoa's reference. The key is that this function puts the external RAM into low-power mode. If you are not calling power_shutdown() or (...) (26 years ago, 15-Mar-99, to lugnet.robotics.rcx.legos, lugnet.robotics, lugnet.robotics.rcx.pbforth)
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