gnupic: DIY USB programmer ?
Subject:
Re: DIY USB programmer ?
From:
Byron A Jeff ####@####.####
Date:
5 Jan 2005 16:40:55 +0000
Message-Id: <20050105164050.GA14720@cleon.cc.gatech.edu>
On Wed, Jan 05, 2005 at 09:50:24AM -0500, ####@####.#### wrote:
> One could use 74C221 (monostable non-retriggerable multivibrator) instead
> of 555 and transistor setup. Should be easier to setup and lower the part
> count.
When designing items like this I usually use what I call the Radio Shack
test: I choose items that can be had from the local Radio Shack.
I have virtually zero chance of getting a 74C221 today. 555s are on the
shelf, along with the transistors, resistors, and diodes.
BAJ
