 | | events /nxt vs. events/rcx
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Hi, I tried to write some code to simulate the events like in RCX. It starts to look cluttered. I understand that NXT VM does not support events like you find in the RCX. Any suggestion will be greatly appreciated! Elizabeth (17 years ago, 31-May-07, to lugnet.robotics.nxt)
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| | documentation on bt / nxc
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I have two bots set up some meaningful ack and nack conversation. However, when one bot/slave lost connection, e.g. terminated abruptly, the sender (master) does not notice that it indeed lost it. The ReceiveRemoteNumber(INBOX, true, ack) does not (...) (17 years ago, 31-May-07, to lugnet.robotics.nxt)
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| | name your nxt
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Hi, SetBrickDataName(str) seems to be able to only change the name of the nxt temporarily. Once the nxt is started, it loses the name assigned thru the SetBrickDataName earlier. Idea? --Elizabeth (17 years ago, 31-May-07, to lugnet.robotics.nxt)
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| | Re: Moving NXT motors by hand
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(...) Well, if by "more qualified" you mean "have abused their hardware harder than average, yes :-). Since day 1 I've back-driven the NXT motors by hand, including the magic motor demo (not as efficient with the NXT motors, but it does work), using (...) (17 years ago, 29-May-07, to lugnet.robotics.nxt)
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| | Re: Moving NXT motors by hand
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(...) Well, I don't want to claim to be an expert, but I'll tell you what I've done. I have a couple remotes that I've been using for over a year, and I haven't had problems with them. One not only uses the rotation sensors, but also uses the motors (...) (17 years ago, 29-May-07, to lugnet.robotics.nxt)
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| | RE: Moving NXT motors by hand
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Hand crank it alone should be find. As a matter of fact, that's how we demonstrate to kids a generator. However, just to be on the safe side, I would recommend you not to hand crank it when it is hooked onto to the power source, especially when it (...) (17 years ago, 28-May-07, to lugnet.robotics.nxt)
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| | Re: Moving NXT motors by hand
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Thanks! (17 years ago, 28-May-07, to lugnet.robotics.nxt)
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| | Re: Moving NXT motors by hand
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(...) John, there are a lot of people using the NXT motors this way, just to get the feedback from the built-in rotation sensors. The best example would be the MDPers who built one joystick with a NXT kit to control a moving vehicle made with (...) (17 years ago, 28-May-07, to lugnet.robotics.nxt)
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| | Re: Moving NXT motors by hand
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Hi John, I would not think so, as the NXT's own construction guide has a pick and place (blue ball, red ball) robot, that has hand cranks to move it into position. Danny (...) (17 years ago, 28-May-07, to lugnet.robotics.nxt)
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| | Moving NXT motors by hand
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Hi: Sometimes my son and I move the NXT motors by hand, for instance, by attaching something to the holes in the orange hubs to act as a crank. We wonder if that's bad for the motors. Does anyone have an opinion? Regards, John and Will (17 years ago, 28-May-07, to lugnet.robotics.nxt)
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| | robosoccer ball problem
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Hi all, I am trying to get some middle school kids playing a bit with the robosoccer idea. I don't want to frustrate them with the fluctuating IR ball. So, I am planning to find a constant "lighted" ball for them instead, but no luck. Wonder if (...) (17 years ago, 28-May-07, to lugnet.robotics.nxt)
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| | Gripper/Register for Light Sensor Experiment
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I want to create a platform for experimenting with the light sensor. At the moment, I'm thinking of cutting off the gray-scale and color bars off the NXT Test Pad that comes from the commercial kit. The strip would then be mounted on some device, (...) (17 years ago, 26-May-07, to lugnet.robotics.nxt)
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| | Re: Using NXT Port 4 EIA-485
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(...) Does anybody have an NXC program that demonstrates the use of RS485 communications? (17 years ago, 25-May-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: bitwise operators
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(...) ...and if you are talking about NXT-G, there is a bitwise manipulation block, written by Mike Gasperi and Steve Hassenplug, available here: (URL) list of available blocks is here: (URL) (17 years ago, 25-May-07, to lugnet.robotics.nxt)
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| | Re: bitwise operators
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(...) Are you talking about NXC or NBC or some other programming language? The standard NXT firmware does support bitwise logical operators such as and, or, and xor. In both NXC and NBC you can use these operations as you would expect in a C-like (...) (17 years ago, 24-May-07, to lugnet.robotics.nxt)
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| | bitwise operators
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I looked thru the doc, it looks like it does not allow bitwise operators like IOR, XOR, AND, etc. Is this correct? Or, I have overlooked something? --thanks Elizabeth (17 years ago, 24-May-07, to lugnet.robotics.nxt)
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| | RE: determine the degree of turning by using ultrasonic sensor
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Ok... I wrap every sequence of motion control with mutex. I created a movement macro which basically just wrap the command(s) around with acquire and release. By the way, would someone tells me how I'll find out how the mutex datatype implemented. (...) (17 years ago, 22-May-07, to lugnet.robotics.nxt)
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| | RE: determine the degree of turning by using ultrasonic sensor
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Found it... RotateMotor(OUT_C, 100, turn); x = MotorRotationCount(OUT_C); --E -----Original Message----- From: news-gateway@lugnet.com [mailto:news-gateway...ugnet.com] On Behalf Of Elizabeth Mabrey Sent: Tuesday, May 22, 2007 12:57 PM To: (...) (17 years ago, 22-May-07, to lugnet.robotics.nxt)
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| | determine the degree of turning by using ultrasonic sensor
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Is it quick way to determining the # of degree or some value which will help to calculate the distance travelled. more or less like the x= rotation-click.. Is it a way to read how much the motor has turned from a certain point. - Reset motor/sensor (...) (17 years ago, 22-May-07, to lugnet.robotics.nxt)
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| | Introduction of LEJOS OSEK
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Hello everyone and special thanks to LEJOS developers, I would like to introduce a new project that is standing on the shoulders of giants. LEJOS OSEK (URL) is an open source firmware for LEGO Mindstorms NXT. LEJOS OSEK consists of I/O driver of (...) (17 years ago, 22-May-07, to lugnet.robotics.nxt)
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