opps .... put a diode across the relay coil to remove spikes
----- Original Message -----
From: "Robert Frailey" <rfrai...@utahmed.com>
To: "U2 Users List" <u2-users@listserver.u2ug.org>
Sent: Friday, May 03, 2013 10:09 AM
Subject: Re: [U2] [way ot] - Electronic Button Purshers?
put a diode across the resistor to remove spikes
----- Original Message -----
From: "Robert Porter" <ropor...@ochsner.org>
To: "U2 Users List" <u2-users@listserver.u2ug.org>
Sent: Friday, May 03, 2013 9:54 AM
Subject: Re: [U2] [way ot] - Electronic Button Purshers?
The other option is a linear actuator - which personally I prefer over
solenoids.
You should easily find something with googling "ardiuno linear actuator"
(Lot more out there for the Arduino just because it's been around so
long - same ideas/concerns apply).
Watch your current draw even with a relay. The RPi GPIO ports are pretty
picky.
Robert F. Porter, MCSE, CCNA, ZCE, OCP-Java
Lead Sr. Programmer / Analyst
Laboratory Information Services
Ochsner Health System
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