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range
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 | | Re: light sensor question
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| (...) The Analog to Digital converter of the h8/300 (the brains of the lego mindstorms) is 10 bits, so it has a range of 0-1023. I'm not sure how it converts that to the 0-100, it may do it by just dividing by 10 and rounding. If you want to see (...) (21 years ago, 24-Jul-03, to lugnet.robotics.rcx)
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| | Re: color sensor
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| (...) Happy Christmas to you too! ... and yes, I have a bench prototype running using that TAOS chip. As per my previous attempts at a color sensor however, it is proving very difficult to make the sensor range and orientation independent. JB (19 years ago, 25-Dec-05, to lugnet.robotics.rcx)
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| | Re: baffled by a part in RIS 1.5
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| Ok, this is called a "Slip Gear" or "Torque Gear" It is used to prevent over rotation by means of an internal clutch, the 2.5 - 5.0 NCM I belive means the range of operable force applied before the clutch disengages. Nano Centemeter of force. In (...) (24 years ago, 3-Apr-01, to lugnet.robotics.rcx)
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range
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| | Re: baffled by a part in RIS 1.5
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| Ok, this is called a "Slip Gear" or "Torque Gear" It is used to prevent over rotation by means of an internal clutch, the 2.5 - 5.0 NCM I belive means the range of operable force applied before the clutch disengages. Nano Centemeter of force. In (...) (24 years ago, 3-Apr-01, to lugnet.robotics.rcx)
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| | Re: Making Light Sensor Passive
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| I'm not sure what you mean by "making light sensor passive". The light sensor, by design, requires power to work. You can tell the RCX that the light sensor is a passive sensor, but you don't get much range in readings - the phototransistor in the (...) (26 years ago, 25-Feb-99, to lugnet.robotics.rcx.nqc)
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| | Re: Micro-Switches, Mux
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| Knowing the resistor inside the RCX is 10 kOhm, you should use a different resistor for each switch, the first resistor should be 10 kOhm, the second 30 kOhm, third 70 kOhm, fourth 150 kOhm, this will divide the 5V range in nearly evenly spaced (...) (24 years ago, 26-Feb-01, to lugnet.robotics.rcx)
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| | Re: light values?
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| Some months ago, I posted this question, but got no response. I've finally played with it some more this morning and have some observations: 1) After setting ds_active, my light sensor returns values of 0-100, as I should. 2) After calling (...) (25 years ago, 28-May-99, to lugnet.robotics.rcx.legos)
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| | Software for Analyzing Forth Programs
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| From NASA Tech Briefs: (URL) parts of code can be categorized and quantified in selectable ways. Marshall Space Flight Center, Alabama Forth Source Code Analysis Tool Set (FSCATS) is a computer program that provides a wide range of capabilities for (...) (24 years ago, 13-Jun-00, to lugnet.robotics.rcx.pbforth)
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range
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| | Re: infrared communication
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| (...) I dont know what the max distance for two RCXs is. But i have had the infared transmitter as far as 40 feet from the RCX, with no obstructions in the way and they still communicate. I would bet they have a pretty good range. Jeff (25 years ago, 10-Feb-00, to lugnet.robotics.rcx)
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| | Re: Desire Rack & Pinion design
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| (...) Most of the official LEGO Technic models with steering use a rack and pinion system. You can visit Kevin Loch's unofficial scan repository to check out some of the designs: (URL) sets are in the 8000 range. Or you can simply buy a Technic set (...) (24 years ago, 24-Apr-00, to lugnet.robotics.rcx)
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| | Re: Trigonometry and NQC
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| Hi Richard, No, NQC does not implement any of the trig functions. However, you can do it yourself. The idea is to use a second order polynomial to approximate the sine function. You can get pretty good accuracy (within about 5%) if you break up the (...) (23 years ago, 12-Dec-01, to lugnet.robotics.rcx.nqc)
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| | brickOS is slower than NQC for sending message
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| I tested two ways with brickOS and NQC, source as below, you will find the NQC can only send about 80 messages in 4s, brickOS can send all 255 messages, but need 20s, in other word, NQC needs 50ms for sending a message, or brickOS needs above 100ms (...) (16 years ago, 26-Jun-08, to lugnet.robotics.rcx)
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| | Re: table brickos light to percent
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| (...) Hi Thomas, Here's the formula used in the dsensor.h include file: #define ds_scale(x) ((unsigned int)(x)>>6) //!< mask off bottom 6 bits #define LIGHT(a) (147 - ds_scale(a)/7) //!< map light sensor to 0..LIGHT_MAX This maps the raw sensor (...) (20 years ago, 27-May-04, to lugnet.robotics.rcx.legos)
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| | Re: text location for apps and q?
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| Hello, (...) No they don't have a separate address space. I think the limit is 19456 bytes for the kernel, and this is caused by a limitation of the ROM, which is used to download the firmware (kernel). It loads it to the address range 8000-cc00. (...) (24 years ago, 30-Oct-00, to lugnet.robotics.rcx.legos)
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| | Re: rotation sensor thing solved
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| (...) This is a quite interesting situation to test. When I released patched sensors routines, I've tested the sensor values (expecially rotation one) with batteries full and with very exausted batteries, but never with exausted batteries and motors (...) (24 years ago, 27-Jul-00, to lugnet.robotics.rcx.legos)
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