 | | Re: What that displayed on my RCX2.0?
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(...) That sounds like the datalog indicator - while RIS doesn't take advantage of it (to my knowledge), the RCX can function as a datalogger - the quarter of the datalog that is being loaded flashes, while the quarters of the datalog that are (...) (20 years ago, 14-Mar-05, to lugnet.robotics.rcx, lugnet.robotics)
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| | Re: What is that displayed on my RCX2.0?
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I am not sure here - but could that mean that the batteries are seriously low? It would seem likely if they have been sat for a while, as even when powered down there is some residual current usage, and leakage in the RCX. Remember that when (...) (20 years ago, 14-Mar-05, to lugnet.robotics.rcx, lugnet.robotics)
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| | What that displayed on my RCX2.0?
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G'day, I have been using my RCX 2.0 brick recently after it has been laying idle for a period. I have noticed that there is an extra icon in the display window which is not discussed in the Lego Robotics Invention System 2.0 Constructopedia. I was (...) (20 years ago, 14-Mar-05, to lugnet.robotics.rcx, lugnet.robotics)
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| | Re: power levels clarification
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(...) Others have explained Pulse Width Modulation. However, if the kids are old enough to understand the difference between linear (straight line) and square law (curving ever upwards) and electrical voltage, resistance and power, you could say (...) (20 years ago, 13-Mar-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
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| | RE: power levels clarification
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This is really good info... Thank you very much... ---...--- -------- Best Regards, Elizabeth Mabrey Partner of Director LEGO MINDSTORMS 3322 Rt. 22 West, Bldg 4, Ste 402 Robotics Community Branchburg, NJ 08876 Ph: (908) 595-1010 ; M-F: 10-5; Sat: (...) (20 years ago, 13-Mar-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
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| | Re: power levels clarification
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Hi Elizabeth, (...) there is an 8ms cycle, and the motor is on for a part of that: 1ms for power level 0, 2ms for power level 1, up to all the 8ms for power level 7. The rest of the time the motor is floating, i.e. the motor inputs are disconnected, (...) (20 years ago, 13-Mar-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
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| | RE: power levels clarification
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Thank you very much for your clarification. Any suggestion on reading material about PMW for high school kids. -- Elizabeth -----Original Message----- From: news-gateway@lugnet.com [mailto:news-gateway...ugnet.com] On Behalf Of Thomas Johnson Sent: (...) (20 years ago, 13-Mar-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
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| | Re: power levels clarification
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(...) PWM--Pulse Width Modulation. Basically, during a cycle, power is turned on and off. The lengh of time the power is on is the pulse width. Longer pulse widths corispond to higher power levels. This cycling is supposed to happens fast enought (...) (20 years ago, 13-Mar-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
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| | Re: power levels clarification
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(...) PWM - pulse width modulation of the electric current going to the motors. CS (20 years ago, 13-Mar-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
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| | power levels clarification
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Hi I am curious how the power levels are being implemented. I am not talking about the icon level navigation. How the motor actually adjusts to the different levels setting? Gear slipping? Thanks in advance... -- Elizabeth (20 years ago, 13-Mar-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
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