 | | RCX IR Tx Circuit
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Here's my drawing of the RCX IR transmission circuit (receiver circuit to follow soon): (URL) With the voltages as shown, the RCX is not transmitting. The IR LEDs are powered by a 600mA current sink. I haven't measured for waveforms yet - the (...) (20 years ago, 20-Jan-05, to lugnet.robotics, lugnet.robotics.rcx, FTX)
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| | BricxCC test release
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Folks, I've been fiddling around with how BricxCC and NQC talk to the RCX when using the USB tower. It's because of several users experiencing problems when trying to download programs from within BricxCC (using NQC behind the scenes). Depending on (...) (20 years ago, 18-Jan-05, to lugnet.robotics, lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | RCX Sensor Port and Power Supply Circuits
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Here are my drawings of the RCX sensor port and power supply circuits, complete with measured voltages from inside the box. These are averages measured with a DMM, not an indication of peak waveforms. I might use an oscilloscope later if there's a (...) (20 years ago, 17-Jan-05, to lugnet.robotics, lugnet.robotics.rcx, FTX)
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| | Re: sub-vi begin vs end control
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(...) Hi, This is a *minor* bug in RoboLab. The sub-vi diagram will have begin and end terminal labels swapped, but the program will function properly. Use the text tool to rename the terminal labels. Thought it should have been rectified in ver (...) (20 years ago, 17-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx)
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| | Re: sub-vi begin vs end control
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(...) In a LabVIEW program (vi) there is a front panel and a block diagram. The front panel is the user interface and contains both controls and indicators. When you place a control/indicator on the front panel a corresponding terminal is created on (...) (20 years ago, 17-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx)
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| | RE: sub-vi begin vs end control
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Hi Tom, Just for my education purpose, I'd like to understand the difference between the "begin" & "end" control boxes at the "Front Panel" window. Although they look identical, they must be different since they failed to wire to the blocks next to (...) (20 years ago, 16-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx)
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| | Re: sub-vi begin vs end control
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(...) It is a leftover from LabVIEW. When you create a sub.vi, LabVIEW reuses the name of whatever is wired to the control/indicator. This behavior makes perfect sense in LabVIEW but much less so in Robolab. FWIW, the names are little more than (...) (20 years ago, 16-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx)
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| | sub-vi begin vs end control
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Hi, After a sub-vi is created, there are two controls created namely begin and end. Would someone explain why they are backwards? That means, it creates an "end" control linked to the beginning of the sub-vi, while the "begin" at the end. Thank in (...) (20 years ago, 16-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx)
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| | Re: combining LDCC and NQC style automation?
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(...) If you'd rather do a little hardware work, than learn pbForth, I have a couple suggestions. 1) You could use LEDs instead of regular lights. An LED will only light, when the power is going the correct direction. So you could connect 1 LED to (...) (20 years ago, 14-Jan-05, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: combining LDCC and NQC style automation?
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[big snip] (...) I do have DCC in the latest pbForth, but I've sort of dropped official support for older versions of MacOS. That being said, I think the instructions are still up on the site for getting it to work. :-) Please post here if you;re (...) (20 years ago, 14-Jan-05, to lugnet.robotics.rcx, lugnet.trains)
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