AVR-Chat

I'm new to this group and seeking advise.

If ready made modules are available that can be programmed via USB it will be better still. I have enough soldering to do without making up SMD boards, because there will be a number of these required. Any suggestion I will be most grateful for.

-- 
Regards

John Samperi

********************************************************
Ampertronics Pty. Ltd.
11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
Tel. (02) 9674-6495
Website  http://www.ampertronics.com.au
*Electronic Design * Custom Products * Contract Assembly 

On Feb 2, 2016, at 3:20 PM, wolfram_s@hotmail.com [AVR-Chat] wrote:

> The task I have is relatively straight forward,
>
> A 0.5 second timer, that makes the processor advance through a table (probably each row a byte) and according data turns an LED connected to a given IO pin on or off. The 'table' will have 0.5 hr worth of data and when the end is reached will cycle through again. I may require from 16 to 20 output pins.
>
> If ready made modules are available that can be programmed via USB it will be better still. I have enough soldering to do without making up SMD boards, because there will be a number of these required.
>
> Any suggestion I will be most grateful for.

Quite frankly most any AVR will do. Many are still available through-hole and need little more than 3.3 - 5.0 volts. And capable of directly driving high efficiency LEDs to interesting levels of brightness.

But when you add USB to the equation things get many orders of magnitude more complex.

A bare chip needs something like a JTAGICE mkII. An AVR Dragon is lower cost and may have all you need.

Arduino is an environment supported by many vendors of prebuilt boards complete with development environment for programming and ICE. Probably the best place for a one-off design. Would be easier to get USB than working from bare metal as described above.

--
David Kelly N4HHE, dkelly@HiWAAY.net
============================================================
Whom computers would destroy, they must first drive mad.

> On Feb 2, 2016, at 1:20 PM, wolfram_s@hotmail.com [AVR-Chat] <AVR-Chat@yahoogroups.com> wrote:
> 
> 
> HI Everyone
> 
> I'm new to this group and seeking advise.
> 
> I've been out of the embedded side for too many years now while concentrating on Medical Practice software.
> 
> Seeing my retirement is only a week away and I have model railway that needs to look alive I thought I better pull the proverbial digit out and get into setting up some cpus for running some of the lighting on the layout.
> 
> My past experience been with various Motorola processors, and the occasional 8080/Z80 family members.  I have a never used PIC system.  In previous job a colleague was rather taken by the Atmel family so I thought I'd them a go.
> 
> 
> 
> The task I have is relatively straight forward,
> 
> A 0.5 second timer, that makes the processor advance through a table (probably each row a byte) and according data turns an LED connected to a given IO pin on or off.  The 'table' will have 0.5 hr worth of data and when the end is reached will cycle through again.  I may require from 16 to 20 output pins.
> 
> 
> 
> If ready made modules are available that can be programmed via USB it will be better still.   I have enough soldering to do without making up SMD boards, because there will be a number of these required.
> 
> 
> 
> Any suggestion I will be most grateful for.
> 
> 
> 
> Kind Regard
> 
> Wolf
> 
> (Melb. Australia) 
> 
> 
>