 | | Re: Multiplexing 4 touch sensors on an RCX input port
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(...) While in theory, this sounds very cool, in pratice, I doubt it will work quite that well. The biggest problem will be that the standard touch sensors may not be 100% on when you press it. This means the sensor itself can provide some (...) (22 years ago, 9-Sep-03, to lugnet.robotics.rcx)
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| | Re: Multiplexing 4 touch sensors on an RCX input port
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(...) I don't think that would work very well, as the lights have a rather low resistance, lower than a pressed touch sensor ((URL) as a purist you can use the cybermaster sensors to multiplex three inputs ((URL) Jürgen Stuber <stuber@loria.fr> (...) (22 years ago, 9-Sep-03, to lugnet.robotics.rcx)
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| | Re: Multiplexing 4 touch sensors on an RCX input port
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(...) LEGO purists use LEGO light bricks as resistors. I created potentiometer bricks, where the resistance is variable for each brick. Two stacks of 4 potentiometer bricks can be seen to the left of the RCX. In this case each stack puts the (...) (22 years ago, 9-Sep-03, to lugnet.robotics.rcx)
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| | Multiplexing 4 touch sensors on an RCX input port
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You can use four touch sensors per input port on the RCX. The Cybermaster touch sensors have resistors in parallel, and this is how the Cybermaster knows which implement is attached to the tracked robot. It uses its sensor input as a temperature (...) (22 years ago, 5-Sep-03, to lugnet.robotics.rcx)
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| | Re: which would you choose?
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(...) My suggestion: Get the Builders Kit NOW. ASAP. Play with it. Then, after you've played with it a bit, you'll know a little better, what you want to build. Everyone builds a bit different, and uses different pieces. I have a drawer full of (...) (22 years ago, 8-Sep-03, to lugnet.robotics)
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| | Re: which would you choose?
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(...) <homer simpson> Mmmmm, Back Hoe. </home simpson> Lots of funky pneumatics stuff in the Back Hoe, great for making manually operated robots and cool technic models. You'll never control all that pneumatics with the 3 outputs of the RCX though, (...) (22 years ago, 8-Sep-03, to lugnet.robotics)
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| | Re: which would you choose?
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(...) How many RCX's do you own? If it's just 1, then get RIS 2.0 and get an add'l RCX at some discount on Brickbay or something If you have tons of Technic anyway, the add'l RIS parts is pretty much irrelevant--you'd get them from the 'Hoe and (...) (22 years ago, 8-Sep-03, to lugnet.robotics)
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| | which would you choose?
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I am trying to decide which i should get out of the following two options. I am asking for some opionions as to which you would get and why: 1. RIS 2.0 Builders Kit (Contains RIS, Ultimate Builders Set and Ultimate Accessory Kit) Back Hoe (Mainly (...) (22 years ago, 8-Sep-03, to lugnet.robotics)
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| | RE: leJOS & BricxCC news
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(...) OK, I've looked at your wish list and have the following comments with respect to how I see the pbForth implementation of DCC. 1. How important is it to have more than one port with DCC capabilities. The reason I'm asking is that it "would be (...) (22 years ago, 7-Sep-03, to lugnet.robotics.rcx, lugnet.trains, lugnet.robotics.rcx.pbforth)
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| | Re: USB Tower Performance [was leJOS/BricxCC news]
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(...) Doh! I forgot about Odd parity and the USB tower. I will see about fixing that little problem. Is your quad speed boot loader source significantly different from Kekoa's fastdl.s (with the parity disabling code removed)? I'd like to see it if (...) (22 years ago, 7-Sep-03, to lugnet.robotics.rcx)
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| | Re: leJOS & BricxCC news
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(...) Hmmm. I was seriously considering writing a leJOS package to support the LDCC IR Protocol. (Here's why: (URL) ) What capabilities were you going to add? Depending on your timeline, you might convince me to try FORTH. (22 years ago, 7-Sep-03, to lugnet.robotics.rcx.java, lugnet.robotics.rcx, lugnet.trains, lugnet.robotics.rcx.pbforth)
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| | RE: pbForth & ROLL
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(...) John, As always, it depends. ROLL can sometimes be recovered gracefully, but not always. If you ROLL more than the stack depth, you'll shift some RAM that you probably don't want to shift - like the pbForth image itself. In that case, there's (...) (22 years ago, 6-Sep-03, to lugnet.robotics.rcx.pbforth)
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| | pbForth & ROLL
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(...) While testing my console the other day I kept getting pbForth to hang (or so it appeared). It turns out I was passing ROLL a number that caused it to do bad things. I'm wondering whether it should error out with "aborted stack underflow" or (...) (22 years ago, 6-Sep-03, to lugnet.robotics.rcx.pbforth)
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| | Re: USB Tower Performance [was leJOS/BricxCC news]
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In a recent post, John Hansen raised some questions about USB Tower [1] quad speed downloading and [2] varioustimeouts and difficulty with certain optocdes. Here's a bit of an explanation. Lots of technical detail for those that are interested. (...) (22 years ago, 6-Sep-03, to lugnet.robotics.rcx)
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| | Re: Lego Mindstorms Robotic Sumo Question
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(...) Thanks Steve! Everything I wanted to know I found out on that website. Great information. Thanks again! David Perdue www.geocities.com/imroboguy (22 years ago, 6-Sep-03, to lugnet.events, lugnet.robotics.rcx)
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| | RE: leJOS & BricxCC news
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John, Thanks for continuing to work on this. It's one of the things that keeps me motivated to continue supporting pbForth. Now, there has not bee much traffic there lately, and I have not done much with it becuase as far as I know, things are "just (...) (22 years ago, 5-Sep-03, to lugnet.robotics.rcx.java, lugnet.robotics.rcx, lugnet.robotics.rcx.legos, lugnet.robotics.rcx.nqc, lugnet.robotics.rcx.pbforth)
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| | Re: trouble compiling brickOS
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(...) Hm, that should not happen. Try to start your hitachi compiler by hand, for example with "h8300-hms-gcc --version" to get an "I am alive" message from it, so you are sure it is installed as intended. If _you_ can't get it to work, configure (...) (22 years ago, 5-Sep-03, to lugnet.robotics.rcx.legos)
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| | Re: Weird RCX electrical ideas
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(...) Although these pictures come from as imulator, they are quiet like you probably have seen on the scope, see .. (URL) this page might be of interest, describing both sensor and motor terminals: (URL) Mientki (22 years ago, 5-Sep-03, to lugnet.robotics)
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| | Sumo-bot event in Ann Arbor, Michigan on 9/20/03
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If you are interested in competing with us, or just want to attend, you can find all of the information you need here: (URL) have begun robot registration and so far there are 14 robots in the database and 13 others have been mentioned, which brings (...) (22 years ago, 5-Sep-03, to lugnet.org.us.lrgoaa, lugnet.robotics, lugnet.robotics.events)
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| | Re: Yet another Technic 9V motor comparison update
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(...) This is a wonderful resource! Thanks so much for posting this information. -TJ p.s. I've finally updated the motors page ((URL) links to Philo's page, of course! (22 years ago, 5-Sep-03, to lugnet.technic, lugnet.robotics)
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