Does this look right to you guys? Or have I screwed something up?
It's a bit dangerous tying AREF directly to +5V
and what is the purpose of R2?
Did you know about http://evilmadscience.com/productsmenu/tinykitlist/253 ?If not, it might save you some trouble. If you're set on making your own, you might find their published schematics/etc useful anyway...
Where are the bypass capacitors?
So I still need a cap between 5v & Gnd, even though it's being powered by the Arduino?
It's a bit dangerous tying AREF directly to +5V ...
... and what is the purpose of R2?
QuoteSo I still need a cap between 5v & Gnd, even though it's being powered by the Arduino?In general for reliable operation of any digital IC you need a bypass or decoupling capacitor as close to its power pin as possible. If the IC has more than one power pin then you need more than one capacitor. Atmel recommends one for the AVcc pin as well.
Ok, could you please explain how? This shows AREF and VCC clearly both going to 5v.
Thanks Lefty, looks like there's a fair bit of conflicting info in the articles contained on this site. Can be tough for us new guys to sift through and figure out what's "right" (or just recommended - and why) sometimes.
btw where did you get that ZIF socketthey seem to be exchangeable for 1 arm + 1 leg !
Quote from: mmcp42 on Jun 20, 2011, 06:13 pmbtw where did you get that ZIF socketthey seem to be exchangeable for 1 arm + 1 leg !Oh yes Mike, I spent a good while looking around and saw many for £7-8 or so (+shipping).Then I found 'em on Proto-Pic. I didn't need the ZIF sockets at the time, but figured I would eventually, so as I was ordering a bunch of other stuff from there anyway, I added a couple to the order, only £2.18 each (inc VAT!).http://proto-pic.co.uk/products/ZIF-Socket-28%252dPin-0.3%22.html