Search found 97 matches
- Mon Jun 13, 2005 2:18 am
- Forum: General Discussion
- Topic: magnetic sensor help
- Replies: 7
- Views: 3046
magnetic sensor help
Hi all, I need a magnetic sensor, 2axial or 3 axial, please suggesting, thanks<p>mike
- Sun Jun 05, 2005 11:15 pm
- Forum: General Discussion
- Topic: new to pic basic
- Replies: 2
- Views: 1828
Re: new to pic basic
Hi little_angle,<p>I appriciate that you choose programming pic as your hobby after you retired. I have some unused PIC16f877 daughter boards, if you need them and wish to pay the shipping charges from China to US, I can send you some for free. they are very nice for beginners.<p>mike
- Sat Jun 04, 2005 6:55 am
- Forum: General Discussion
- Topic: Solar Cells need help
- Replies: 5
- Views: 3013
Re: Solar Cells need help
Hi Greybie I think there's no too much concerns in usage of solar cell. just buy the right cell according to your voltage and current requirement, then connect them to your application. sometimes a voltate or current limiter or voltage regulator may be used. <p>I have a DIY solar cell phone battery ...
- Sat Jun 04, 2005 4:44 am
- Forum: General Discussion
- Topic: AD is coming in July issue, thinking about special offer
- Replies: 0
- Views: 1161
AD is coming in July issue, thinking about special offer
Hi all
my AD will be published in July's issue. I'm thinking about special offers for N&V readers, any suggestions?<p>mike
my AD will be published in July's issue. I'm thinking about special offers for N&V readers, any suggestions?<p>mike
- Wed Jun 01, 2005 11:28 pm
- Forum: General Discussion
- Topic: FFT chipset
- Replies: 3
- Views: 1677
Re: FFT chipset
thanks rstofer, I know this and our company had done a project involves in FFT ON FPGA. But it's not cost effective, FFT needs a very big scale fpga to do that. I'm wondering if there's some commercial chips, not as expensive as spartan III, and can do FFT-IFFT quickly and cost less.
- Wed Jun 01, 2005 6:45 pm
- Forum: General Discussion
- Topic: FFT chipset
- Replies: 3
- Views: 1677
FFT chipset
Hi all<p>Is there any chip(sets) that can do hardware FFT and IFFT? <p>mike<p>[ June 01, 2005: Message edited by: ezpcb.com ]</p>
- Wed Jun 01, 2005 6:34 pm
- Forum: General Discussion
- Topic: Free Redundant 16F877 Daughter Boards
- Replies: 2
- Views: 1489
Re: Free Redundant 16F877 Daughter Boards
Yes Gorgon I can send you the schematic. please let me know your email. the package of 877 is QFP44. <p>Of course THe boards are fabricated by us, I would say that they are the simplest we made, and of course can show our very normal quality, but doesn't show the highest. we can do up to 40 layer no...
- Wed Jun 01, 2005 4:02 am
- Forum: General Discussion
- Topic: Free Redundant 16F877 Daughter Boards
- Replies: 2
- Views: 1489
Free Redundant 16F877 Daughter Boards
Hi all<p>March of this year we had finished an educational project using PIC16F877. There's a small daughter board with only crystals, 16f877, some capacitors, ICD header and 44 pins expansion connectors on it. It's really a nice kit to develop the 16F877 and 16F874. <p>We had made more than 3000 pc...
- Mon May 30, 2005 6:57 pm
- Forum: General Discussion
- Topic: Books on Op-Amps
- Replies: 9
- Views: 4368
Re: Books on Op-Amps
There are millions of webs can be found by google: http://web.telia.com/~u85920178/begin/opamp00.htm http://webpages.ursinus.edu/lriley/ref/circuits/node5.html http://www.chem.uoa.gr/Applets/AppletOpAmps/Appl_OpAmps2.html <p>reading some app notes or literatures of the semiconductor companies is als...
- Mon May 30, 2005 6:29 pm
- Forum: General Discussion
- Topic: choosing a DSP platform for hobbist
- Replies: 0
- Views: 1055
choosing a DSP platform for hobbist
It seems that most E-hobbist are talking about microcontroller, but few are interested in DSP. Do you think there're some DSP platforms neat for hobbists?<p>I think the best dsp for beginner is dsPIC(microchip again! it seems that they are limited in hobby level (- :) . it has 20pin devices, and the...
- Sun May 29, 2005 11:59 pm
- Forum: General Discussion
- Topic: Choosing a microcontroller platform
- Replies: 16
- Views: 5998
Re: Choosing a microcontroller platform
The current sink capability is so much easier to deal with than lack of DMA.
The biggest drawback is the development of H series is costly, tools and softwares are not easy to find as PIC or AVR.<p>mike
The biggest drawback is the development of H series is costly, tools and softwares are not easy to find as PIC or AVR.<p>mike
- Sun May 29, 2005 6:49 pm
- Forum: General Discussion
- Topic: Choosing a microcontroller platform
- Replies: 16
- Views: 5998
Re: Choosing a microcontroller platform
I had used all of the uCs you mentioned, I like PIC.<p>But I'm beginning to interested in Rensas H series, it has more choice than any of other mcu series. <p>mike
- Sat May 28, 2005 8:46 am
- Forum: General Discussion
- Topic: US made chip is cheaper in China, why?
- Replies: 14
- Views: 5962
Re: US made chip is cheaper in China, why?
You are quite right rstofer. but how about 1.7/8000? that's the best result, don't you think so?<p> <blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by rstofer: Another way to look at cost is in terms of a percentage of income. A...
- Fri May 27, 2005 10:35 pm
- Forum: General Discussion
- Topic: Is there any vacuum tube audio diy fan?
- Replies: 8
- Views: 3507
Re: Is there any vacuum tube audio diy fan?
Hi Enzo,<p>What interested me is finding cheap vacuums tubes on the web market or Sunday second hand market then make my own tube amplifier. You can't imagine how many tubes in those markets and how cheap they are. I had made 3 amplifiers in the past 2 years, one use EL34, one use KT88 and the other...
- Fri May 27, 2005 1:02 am
- Forum: General Discussion
- Topic: Is there any vacuum tube audio diy fan?
- Replies: 8
- Views: 3507
Is there any vacuum tube audio diy fan?
Hi all
I wander if there's any vacuum tube audio fan out there? I like this very much. There seems no such topic on N & V.<p>mike<p>[ May 27, 2005: Message edited by: ezpcb.com ]</p>
I wander if there's any vacuum tube audio fan out there? I like this very much. There seems no such topic on N & V.<p>mike<p>[ May 27, 2005: Message edited by: ezpcb.com ]</p>