1114RE: [tracker2] Progress
- Oct 16, 2006Yeah, that was my first thought... I was hoping I could do it in fewer parts. I've tested it with a JFET and haven't managed to destroy it yet, but I'm not sure if it's sensitive enough. I need to solder together a test apparatus - my breadboard is too sensitive to motion even without the sensor plugged in.Scott
From: firstname.lastname@example.org [mailto:email@example.com] On Behalf Of Wes Johnston, AI4PX
Sent: Monday, October 16, 2006 4:14 AM
Subject: Re: [tracker2] Progresszeiner diode clamp?Wes
On 10/15/06, scott@opentrac. org <scott@opentrac. org> wrote:
I've got Peet Bros weather station support working on both serial ports -
needs a little more work to keep from getting confused if it's getting both
NMEA and Wx. Anyone got an Ultimeter 2000 series to hook up for testing?
I'm trying to come up with a low part count, adjustable sensitivity logic
level interface for the piezo motion sensor. Not really sure what the best
approach to this is, since it needs to detect millivolt level signals, but
if you thump the sensor it can generate tens of volts and blast a FET gate.
Where there's silence, there is no Hope.
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