 | | Re: Rechargeable Batteries
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(...) I use NiMH and get a voltage between 7.8V freshly charged and 7V at the low end (i.e. slightly higher than NiCd). The lower voltage is not really a problem for me. The motors may be somewhat less powerful, but if you're just playing and not (...) (25 years ago, 4-Aug-01, to lugnet.robotics.rcx)
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| | Re: SubVI help screens
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Yes you can create your own help screens, make your own command icon, etc. This is explained in detail in the "Elevator" chapter (Chapter 19) of my book "Creative Projects with LEGO Mindstorms". You can create your own help menu by double-clicking (...) (25 years ago, 4-Aug-01, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx)
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| | Re: Specs for Mindstorms gearmotor?
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I have pictures of the inside of the gear motor in chapter 7 of my book, "Creative Projects with LEGO Mindstorms". The motor is geared down by a factor of 13.56 --- 10 tooth to 44 tooth gear, then 12 tooth to 37 tooth gear. 12 tooth gear and 44 (...) (25 years ago, 4-Aug-01, to lugnet.robotics.rcx)
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| | Re: Rechargeable Batteries
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Hi Frank; Do you have a 1.0 RCX? If so you can do what I did. I used 3 4.5v battery rods with NiMh (9 total) and a custom wire to power my RCXs. It works great for me because I am using multiple RCXs off one power source (I have removed the RCX AA (...) (25 years ago, 4-Aug-01, to lugnet.robotics.rcx)
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| | Re: Rechargeable Batteries
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(...) Nicads have a lower cell voltage (1.2 rather than 1.5), so they won't work very well in the RCX. Personally I use rechargeable alkaline cells (e.g. Ray-o-vac Renewal batteries). The downside to rechargeable alkalines are that they don't have (...) (25 years ago, 3-Aug-01, to lugnet.robotics.rcx)
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| | Re: Rechargeable Batteries
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(...) Frank, I would *not* use Nicads or NiMH rechargeables. Their full-charge voltage is about 1.25V while alkaline batteries are about 1.55. I have Ray-O-Vac Rechargeable Alkaline batteries. They last several hours of operating time between (...) (25 years ago, 3-Aug-01, to lugnet.robotics.rcx)
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| | Rechargeable Batteries
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Hello, I'm at the point now where I need to get rechargeable batteries for the RCX. The alkaline's are just now making it anymore. Are Nicads OK or should I go the extra step and get nickel metal hydrides (Ni-MH)? How are radio shack's batteries and (...) (25 years ago, 3-Aug-01, to lugnet.robotics.rcx)
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| | LEGO mentioned in September issue of Astronomy magazine
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I just got my September 2001 issue of Astronomy magazine and there is a one page article about the LEGO MINDSTORMS Robotics Invention System, Exploration Mars, and Vision Command. Unfortunately, about 40% of the page is taken up by a picture of the (...) (25 years ago, 3-Aug-01, to lugnet.general, lugnet.robotics.rcx)
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| | Re: Creativity
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IHi Roger, I have been meaning to make this available on the web, but I will try to give a brief explanation in advance. The fuzzy logic line follower that I have worked on also uses two light sensors and rack&pinion steering, but follows a line (...) (25 years ago, 1-Aug-01, to lugnet.robotics.rcx)
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| | Specs for Mindstorms gearmotor?
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I'm working on a project which requires that I model the dynamics of a DC motor being driven by a PWM controller... specifically, the Mindstorms gearmotor being driven by the RCX. Does anyone know where I might find the spec's for the Lego (...) (25 years ago, 1-Aug-01, to lugnet.robotics.rcx)
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