T&L Publications

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by 2M MACHINING: Mike, I received 2 copies of july issue,maby they sent me your copy by mistake. (only joking,did receive 2 copies and saw your add in both, maby i can use your ser...

Thanks sofa. We are designing many many PIC, AVR, HC and 51 micorcontroller prototyping boards soldered with components. We'll offer these boards as free items with the PCB order, any order can get a protyping boards. This promotion will coming soon.<p>Mike

it's funny. a few years before when somebody ask me where he was, I told him the name of district and No. of street. But after I have a hand held GPS, I'm intend to tell him the latitude, longitude and altitude of current location <p>Mike

Hi friends, could you kindly tell me did you get the July Issue of N & V? I'm hoping I can get them soon. We have an AD on this issue, it's the first time, I'm eager to see how does it looks, but I have to wait 20 days to receive the magazine.<p>Mike

hi Philba<p>I don't think it's that complex. I think this can be done with simple frequency division. the voice is under 3k, the ethernet is 20M while the TV is above 50M, they are easy to devided.<p>accourding to abu's post, I think he did mean analog TV and phone, not digital signal<p>Mike

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by philba: Building a 422/485 interface is pretty easy, there are lots of companies that make chips and plenty of designs on the internet. By the way, I tried to sample several max...

there're countless uC in cypress and microchip has built-in USB, and they provide sample codes, programming is not a problem. some of these chips has built-in ADC, so you can do all the jobs you want to do with only one chip.<p>have a look at www.cypress.com and www.microchip.com <p>Mike

Fujitsu has a finger print sensor. we had developed a module with FPS200, the processor is samsung S3C2410 ARM9 processor. This module can communicating with other uC by UART. have a look at the picture. This is an old version, now the group is developing a new version with Analog Device Blackfin DS...

Thanks craig-1, I have a good understanding on hall element, but that's not what I want. I need a interegrated 2 axial mangetic sensor and I've found it: Honeywell HMC1002.<p>thanks
mike

It's an active oscillator, not a passive crystal. No external circuit needed to make it vibrating. Just connector pin 15 to osc1, osc2 left unconnected.<p>mike

I saw the advertise of circuit creator on Nuts and Volts, has anybody ever used this software? it's only $99, could you tell me how about it?<p>thanks<p>mike

1. make a radio receiver
2. a weather station.
3. make a CPLD clock
4. make a robot
5. buy a remote control toy car, equiped with a wireless camera
6. make a wireless microphone
7. make a tube amplifier
8. ....

Mike<p>the easiest way is using binary counter such as 74hc393. use the output pins to drive some LED then you can know the number.<p>a more advanced design is using a uC to drive LCD or 7 segment LEDs. the programming is very easy, you can try it.<p>Mike

Ha, I got it, honeywell HMC1002 is what I want!

Hi all<p>Thanks for all your reply but I think I didn't describ my requirement clearly. What I want to measure is the magenetic of the earth. I need 2 axial sensor, like those used in the digital compass. <p>thanks