AVR-Chat

Look at data sheets for driver parts, etc at semi manufactures web site such
as www.ti.com www.national.com etc. A part I use a lot from ti is the
tpic2603 part... 6 channels, spi communications, heavy current drive, fully
protected, etc. Drives LEDs, Solenoids, etc.

Al Welch 

-----Original Message-----
From: David Brännvall [mailto:davidbrannvall@home.se] 
Sent: Friday, July 02, 2004 2:43 AM
To: AVR-Chat@yahoogroups.com
Subject: [AVR-Chat] Electronics

Hi, I have been into programming for several years, but now I want to start
with hardware. My first project will basically be a little general purpose
box with lots of buttons and leds and a display, and a comport.

I have bought the stk500, and I have no problem with the assembly
programming, and I manage to connect a few leds 74XXX ic's etc to the
stk500, and get some comport communications with my pc etc.

But I feel my electronics skills are way to low, I need to learn things
like:
* More basic understanding about the electronics.
* How to control things that require more current then the stk can provide.
* How to build things without using the stk500.
* Howto read datasheets.
* Howto find errors in my hardware designs.
* Etc

Ie The programming isn't any problem, but I don't know enough to design my
own hardware around the AVR.

I just need to get some basic knowledge, so I can experiment. Right now I
get stuck all the time, and I don't know what to do, or where to look for
the solution.

The avrfreaks website is great, but most of the information is about
programming or the electonics is to advanced for me.

It can't be impossible for a newbee like me to design the "simple" box I
mentioned.

It should be just some shiftregisters to set the leds, some shiftregisters
to read the buttonstates, some io to the display and the comport.

But I don't know where to put the resistors, how to get enough current to
drive the led backlight and stuff like that.

Any ideas where I can find info to learn more about electronics, ie
webpages, books, tutorials, newsgroups, irc, anything that might help me.

Regards,
David



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