[time-nuts] PICTIC II ready-made?
albertson.chris at gmail.com
Wed Apr 25 14:13:42 EDT 2012
On Wed, Apr 25, 2012 at 9:37 AM, Don Latham <djl at montana.com> wrote:
> I forgot to add that a simple redrafting of the II as an Arduino shield
> with appropriate chips and chip passives would accomplish the desired
> end without losing the very careful engineering and testing that has
> already been done?
> Would be nice to have a way to change caps without soldering as well,
> maybe just some .1" jumpers?
Yes, MOST of the design could be re-used. As an Arduino shield there is no
need for a PIC or RS-232 interface becusethe Arduino does that function.
You'd need to replace the 74ACT175 part but that is not hard.
About changing the cap values without soldering. I guess you could push
the leads into a 0.1 inch header strip or install several and use a DIP
switch to select which are "in". But I don't know if the extra inductance
al that wiring adds is enough to worry about.
Redondo Beach, California
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