Mike has much more experience than I and I consider his employer to be a=20
reliable vendor.
The mix of 5v & 3.3V along with the matter of some 3.3v circuits are 5v=20
tolerant leaves me a little paranoid.
BiDirectional level converter modules have been very helpful.
I expect you will soon find interest in the Raspberry Pi or similar.

It is a great time for us old nerds to be alive!

On 7/3/2014 6:25 PM, Richard R. Pope wrote:
> John,
>       True and true. You can also smoke a PIC. I take it that the Atmel
> uP is not current limited at the pin? The PIC is but most PICs can only
> handle 150mA total on all pins. This is very easy to forget especially
> late at night and when in a hurry. I'll have to look at the datasheets.
>       True about building verses buying but building can be a lot of fun.
> Thanks,
> rich!
>
> On 7/3/2014 4:39 PM, John Ferrell wrote:
>> Start at http://arduino.cc/
>> Starting will be easier If you chose a "Leonardo" style to begin.
>> The USB connection will provide initial power to the proper places.
>> Whatever you get, be sure you determine what the limits are on the pins
>> you are using.
>> Get careless and they will leak magic smoke. If you can be patient you
>> can save a lot on accessory items from dx.com.
>> The problem with buying in quantity is that new stuff you would rather
>> have comes out every week!
>> You cannot buy parts as cheap as you can buy modules...
>>
>>

--=20
John Ferrell W8CCW
    Julian NC 27283
  Ethics are not absolute. What is considered
    right one decade can be considered
      inconceivable in another decade.


--=20
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