AVR-Chat

Well idiot down the street is making noise so I'm awake again... lol
I tried the 10k but no help.

If I don't connect reset to vcc ISP gives me the blinking orange light.
The same happens if I connect it to vcc with no resistor

----- Original Message -----
From: "H. Carl Ott" <hcarlott@gmail.com>
To: "AVR-Chat" <AVR-Chat@yahoogroups.com>
Sent: Saturday, January 16, 2010 11:39:22 AM GMT -05:00 US/Canada Eastern
Subject: Re: [AVR-Chat] AVRISP -> AtTiny Communication Problem

On Fri, Jan 15, 2010 at 2:09 PM, Kenny M < kenny782@yahoo.com > wrote: 

> 
> 
> Sorry this post is a bit long. 
> I'm new to all this so be gentle LOL :) 
> 
> I'm working on my first project, which I've built and is working. 
> All that's missing is the chip to control it. 
> 
> I've got a few AtTiny15's and an AVR-ISP v2 (usb) 
> 
> So built a target board and connected all the programmer pins to the 
> appropriate pins on the chip. 
> I also connected my 5V+/Gnd to the chip. 
> 
> Now this is where I get confused, 
> I've found so many different schematics on the net... 
> 
> 1) This one just says connect everything as above and program 
> 2) Run a 4.7kohm between reset and vcc. 
> 3) Run a 4.7kohm & 10uf between reset and vcc. 
> 4) Run a 4.7kohm & 22pf between reset and vcc. 
> 5) Run a 4.7kohm & 10uf between reset and vcc, and an 800ohm resistor to 
> all the other connections. 
> 
> Unless you have some serious noise problems you don't need any cap on 
reset. 
You may or may not need a resistor to vcc ( I have to check the data sheet), 
but a 10k resistor will work, and will not cause any problems. 
4.7k should also work, but the value is a little low for ISP. 

Check your ISP programming speed in studio. It must be less the 1/4 your 
AVR's clock speed. 
And double check all your connections. It always seems tricky getting this 
stuff to work the first time. After a while it gets easier (well, 
mostly/usually/hopefully). 

> __._,_.__ 
> 

-- 
carl 
-------------------------------------------------------- 
Henry Carl Ott N2RVQ hcarlott@gmail.com 

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