I've to design a data logger, of course 8051 based, which should write log data to a standard USB flash disk ( Normally used for PC (s) ). Do anyone know about...
... temo non sia un compito cosi' semplice... il protocollo usb e' da mal di testa crearne poi il lato root mi sembra un po dura.... magari invece che un disco...
... I agree with Fuso: USB protocol is a big problem, in particular the "root" side. You should find a chip driver for the low level part (FTDI may fit good? I...
i am new to 8051 programmi8ng i wanna make rolling display using led matrix pls help ... __________________________________ Do you Yahoo!? Yahoo! Hotjobs:...
hi this is my first project (given by my company) hardware is 1) 7x50 led matrix 2)89c52 3)27256eprom 4)6264 ram 5)28c64eeprom 6)ascii key board interface rs...
i think you are probbly new in this field but don't worry. you don't clear that you know assambly programming && basic electronics. you can have tips form...
i think you are probbly new in this field but don't worry. you don't clear that you know assambly programming && basic electronics. you can have tips form...
i am using 74hc574 to latch the data and further uln2803 t drive led leds are comon anode type ... __________________________________ Do you Yahoo!? Yahoo!...
I am testing a 8052 based sequential timer with 3 relay output. These three outputs drive other three 230volts coil type megnetic contracters,but when I start...
put a surge filter in parallel to the coils of the 230V relais. If you don't have any, put a capacitor 0,1uF - 630 Vl Hope this helps Renzo ... From:...
Renzo Righini
celver@...
Jan 26, 2004 12:24 pm
1181
... UMPS is by Virtual Micro Design. I think Virtual Micro Design has been closed, because it's website http://www.vmdesign.com/ is not even up. You can try to...
thanks mihir ... __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free web site building tool. Try it! http://webhosting.yahoo.com/ps/sb/...
thanks for replay yes i am new in this field till this movement i have done few very small projects like announciator, security alarm,progarmmable timer,...
Hi I have to detect zero crossover of 220V AC by the microcontroller. Can anbody help me in its hardware designing. Microcontroller can sense through its ...
Hi, first reduce the voltage amplitude, use a RC series circuit with impedance calculated on 50Hz frequency, followed by a bridge rectifier to have a 100Hz...
andrea@...
Jan 31, 2004 12:57 pm
1186
... I am not nsure this is the right thing to do. An RC network will introduce a phase shift which will create an error in the position of the detected zero ...
Ian, For reducing voltage, use transformer that will not introduce phase-shift as in RC circuit. If you want to avoid transformer, use xR-R||Zener network, ...
Hi Jan & Hitesh As usual, there are several ways to do the same thing. My one was only a possible way. If you are warried about phase shift (however you can...
andrea@...
Feb 2, 2004 12:04 pm
1189
Hello Everyone, I am a new member of the group. I am currently designing a system on AT89C2051. but I am stuck with some problems. Please inform if any of you...
I work with it. ... From: Anupam Baid To: 8052@yahoogroups.com Sent: Monday, February 02, 2004 2:46 PM Subject: [8052] Anybody worked on AT89C2051 Hello...
... [cut] ... in two designs i used two diffrent solutions... in the first one the microcontroller was a pic . Having this chip an high input impedance (if the...
this is mcs51 group and certainly many have worked with different variants including 89C1051/2051/4051 cheers ... From: "Anupam Baid" <eanupam@...> To:...
hi nitin i try to seand mail to u but it came to me i don't know why by the way thanx for replay i am in mumbai so we can only keep in touch by mail i hope u...
... PLEASE, please, please: DO NOT USE this mailing list for your own private messages. DO NOT USE these terrible english shortened words like "u" or "thanx"...
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