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surajbarkale
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Posts posted by surajbarkale
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Thankx MP,
Display refresh is 1 sec (i have used an ISR to update display). As i am using all14 pins of display there is no question of grounding them. but i shall check out adding 0.01uF -
Pen & paper noting beats old ways ;D
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Seems that i am left on my own :( well i wil try to get an oscilloscope on scene & post any updates
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It's far far away from HDLC (as far as i am anyway ;D) however check this out http://www.beyondlogic.org/usbnutshell/usb1.htm
or PDF if you prefer http://www.beyondlogic.org/usbnutshell/usb-in-a-nutshell.pdf
I have attached the same -
It is a Telephone dialer IC with ability of pulse dialing & redialing. but i could not find the datasheet
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First decide upon the USB microcontroller you r going to use. Atmel, Cypress & Microchip provide them, Phillips provides a USB interface chip & FTDI provides a USB to RS232 bridge. I think the factor of chioce will be cost. Dose anyone knows a low cost usb controller?
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I was not sure wether to post the link or not too ;D but it is a good link anyway ;D
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I was not sure wether to post the link or not too ;D but it is a good link anyway ;D
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:o look at that! now whome do we trust? I guess now i have to burn too many ic's trying to figure out the correct pinout ;D guess what most of my failed circuits were working fine & i just got the wrong datasheets ;D
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It runs too slow on my P4 2.6GHz & 3D view dosen't impress me much :P i guess i will stick to eagle
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At first you may find Eagle frustrating. But withine one or two hours you can master it. It is the best free package around if you r into making PCB's.
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Okey i has one 89C52 based project which measures displacement by using an incremental rotary encoder & displays it on 16X2 Alphanumeric LCD. I purchased a 230V -> 5V SMPS to power this thing. And guess what the LCD started rolling :o I replaced the SMPS by trusted X'mer & 7805 & everything was okey. But as soon as i used SMPS the LCD starts rolling. I put a 100uF filtering capacitor near the power connector & 0.1uf ceramic capacitors on all IC's but no avail. Can anybody explain this ???
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This is a good tool to show off to friends but i don't think i can use it. Man if i can't feel the heat coming off my solder gun i might doze on the veroboard itself :D
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DO NOT USE SYSTEM RESTORE it dose slows down your PC when you least expect it. It is a rather bad implimentation of Norton's GoBack (http://www.symantec.com/goback/ sotware. If you turn it off completely it will save you disk space & unexpected problems. It is also helpful to stop unnecessary services take a look at http://www.windowsnetworking.com/kbase/WindowsTips/Windows2000/UserTips/Network/Disableunnecessaryservicestoimproveworkstationsperformance.html and http://www.tweakxp.com/tweak34.aspx.
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just a humble question - How an opamp can be a Synchronous 4-Bit Up/Down Counter[\b] ??? I think Texas Instru. might have something to say http://focus.ti.com/docs/prod/folders/print/sn74ls193.html
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Norton system works is grate for all windows ver. It is a good tool to recommend espically the 'speed disk' (the defragementor). It is lightyears ahade of the default defragmentor that comes with windows. If you have NTFS then i don't think you should even need to defrag often.
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This is strange indeed ??? Anyway I was talking of formatting the drive clean & doing a fresh install. I know it's painful but most of the times i have no choice ;D I keep my data on saperate partitions so it is of no problem for me. Try using the Xsetup software from http://www.x-setup.net/ it offers more options than any other software & it is free too (though it is named pro).
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Are you using WindowsXP? If yes then you should find the folder at D:\Windpws\Prefetch . On my machine it is not hidden. Clear it when you do major changes to your system (like install/uninstall spree:)). This folder is used by windows to preload the programs you use on your PC. However windows dose not clears a program entry when you remove it.
Doing this will not immidiately speed up your PC but in a day or two it should get faster. If this fails then reinstalling windows is the definate answer. Personally i reinstall windows atleast every 6 months because it seems to me that it just gets slower longer you tweak with it. Also check out http://www.x-setup.net/ use this software carefully or you might fry your windows ;) -
Don't use XP restore. It is better to turn it off. If you have ever cleaned the system clean of a virus & then performed system restore to patch things up, it will unleash the virus again. No antivirus can look into the files catched by the System Restore feature. & it really messes up your system. If you are running windows XP try clearing all files in %WINDOWS%\Prefetch directory. (this may be a hidden directory). your computer will gardually speed up :)
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this is the longest post i have seen :o
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Here is a possible recepie, You will need a really fast ADC to sample the input waveforms then a fast SRAM or FIFO to store the captured samples & a microcontroller to transfer the captured data to PC. On PC you can process the waveform (fourier, rms, peak, avg, freq, etc.).
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TEN MOSFETS :o Ante, can i reduce number of mosfets or better yet how meny IRF540 will i need? I think i am going to try this.
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Simple N channel mosfet tester
in Electronic Projects Design/Ideas
Posted
Is this ckt ok? (It's a shame Eagle dosen't has a Push to Off switch symbol :'( )