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RalcoBe

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About RalcoBe

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  1. 1 - the "looking" PC has to have the runtime engine installed. 2 - your "publishing" PC has to upload it via an open port (in Europe, 80 is blocked) 3 - the "looking" pc has to be able to look at the same port (where I work, only 80 is possible) 1) Sorry, for looking it's not needed, but for controlling a control or knob I definitly needed it. 2) Is so. Arguments of "surfing the web" are irrelevant. I don't know (exacly) why it is blocked .
  2. If I understand right, the pcmcia-usb on 95/98 only will support the most mainstream things. Is it then so, that WinXp also does only this, but is more upgradable? Or comes it by default with everything? Thanks for the explanation, kudo is sent. .
  3. I had the same problem. Including excel files to read, coming from different pc's (some "." other ",") Then communicating with different RS232 devices, some read both "," and ".", some not. What they write was for some ".", for others "," I made 2 subvi's: commatopoint.vi and pointtocomma.vi, with strings as in-and output. Strings because that's the way RS232 speaks and listens, and it's the in-output of the excel files. I made them myself (don't know if they exist) to better handle exceptions. .
  4. The way I did it: ( I don't understand Xcontrols ) Image of the clock on the frontpanel without Pendulum Pendulum in a gif file. My 1st vi rotates the pendulum.gif 360 times one degree, these 360 images are saved in an image array. The 2nd vi just uses this image array. Depending on the value (ex43), it shows the 43d element (picture) of the array. Border of the array is made transparent, background of pendulum.gif also.
  5. Sorry, I don't understand anything of it, because I dont' have the right knowledge level. I just plugged an PCMCIA-USB card in an old win 95 Laptop, so I could share my pictures on an usb stick. Later on, I did that with a PCI-USB card on a win2000 desktop. Both worked directly, after installing the driver from CD I understood he just wanted usb on an old PC, no?
  6. From LV 8.5 to 2009, I also have this problem. Sometimes very slow to save Sometimes very slow to load Sometimes very slow to run Sometimes very slow to close Sometimes not .
  7. The basic things, like in the examples, worked. Other things not every time. The I upgraded (LV 8.0 to 8.2 or 8.2 to 8.5, don't know anymore) and everything stopped working. I like my Labview generated HTML code much more and there are no surprises. .
  8. Me also, I had tons of trouble with the Excel reporting. After a few days I quit. Now I save to csv (raw data) and jpg (export of graphs) and later on, I create a nice HTML document. At least the HTML code is "open", and reads +-the same way in all browsers. The HTML page links to pictures, text, numbers, colors, layout, all generated by the VI. .
  9. Some things to keep in mind: 1 - the "looking" PC has to have the runtime engine installed. 2 - your "publishing" PC has to upload it via an open port (in Europe, 80 is blocked) 3 - the "looking" pc has to be able to look at the same port (where I work, only 80 is possible) the combination of 2 and 3 make it impossible for me to do that. .
  10. What you want, is not smoothing, but filtering. In filtering, many theories exist. With or without Mathematics, depends on your study. Please learn more about filtering, decide what and how you want to filter in or out. Then ask the specific question on how to do this specific filtering in LV. .
  11. I connected a 30eur Logitech webcam to Labview, using some free drivers I found on these boards. I made 3 things with it: -Height check and control of a cam profile. -Home alarm saving an image when the IR detector commands. -3D scanner from a form on a rotating table. Max speed was +-20Hz, far good enough for my experiments Results were depending of the same as high-end 10K eur cameras for machine vision: Everything depends of the light. .
  12. Everything depends on your budget, and specifications needed. Do I understand right that you already have a function generator? What are it's in- and outputs? Can it be tweaked? For me, 2 solutions: 1) High budget and expectations: Buy some expensive NI-card 2) Low Budget and expectations: Do the communications DC-Voltage-based. With the very cheap USB-6008 card you have 12-bit precision, so 4096 steps between 0 and 5 V Use only signals between 1 and 4 volt, so you still have 2457 steps (0.04%) 0 to 40 KHZ is now possible in steps of 16Hz. 1,5 Volt gives you 6.66kHz Of course, you need to have a DC-interface, or build one. Sometimes, the big knob in front is just a potentiometer. Same thing for the feedback. Take care of ground loops and signal filtering Success !!
  13. This device gives max 5 Volt. When it doesn't, it's broken, or you need more current. The hardware workaround is a power transistor. Many configurations and models exist, depending on what you want. It's very cheap. When you're in a college, ask the specialised professor, when not, look at specialised sites. Too hard to explain in 5 words here. http://www.google.be/search?q=transistor+amplifier
  14. The way you ask your question doesn't tell me what you already know/have. Try these words in Google: -Ni USB Daq 6008 -H-bridge -Diodes -Voltage source -Transistor Current amplification Success !! .
  15. Why not PCI to Usb, or in the case of an old laptop, a PCMCIA to USB converter? RS232 has too little possibilities to decently drive all USB devices, where PCI and PCMCIA have less problems with it. Costs 10 to 40 eur .
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