3d printed e-bays. There is a screw that is used to turn on the micro
switch. I bought a bag of 25 of them for $5
I also have a 38mm version (just don't have a picture), plus a 75mm dual
battery dual altimeter version.
Mike K
On 1/12/2017 7:14 AM, Mike Kramer wrote:
Richard, what diameter is your e-bay ( I.D. not O.D.).
Mike
On Jan 12, 2017, at 7:09 AM, Mike Kramer <kramer@xxxxxxxxxxxx <mailto:kramer@xxxxxxxxxxxx>> wrote:
richard,
I use micro switches with a screw to arm them. Uses a small hole
in the side of the rocket and makes it highly unlikely that the
electronics can be in advertently armed.
Easy to 3d print the mount for it. I will send you a file tonight.
Side note, don't use PLA ( unless it is the pro spec kind) for
parts, it can't survive the temperatures on the lake bed. I'm
using PETG or Nylon.
Mike K
On Jan 12, 2017, at 6:47 AM, R Dierking <
applerocketry@xxxxxxxxxxx <mailto:applerocketry@xxxxxxxxxxx>> wrote:
I just purchased a PerfectFlite StratoLoggerCF altimeter and
the documentation came with a _Switch Warning_ about failures
of the 110/220 rotary switch that some people have been using
for powering electronics. High resistance and intermittent
connection are noted in the document.
The document says “numerous reports” of failures, but I’m
curious if this is a problem with a group/lot of these
switches or a pervasive problem to this particular switch or
rotary-type switches in general when used for rocketry. I’ve
used these switches in the past and tested the 4 I’m currently
using on two projects. I’m not detecting any problems with
these switches.
Please keep in mind that there are several variations for this
make of switches. Here’s some info on what I have:
Schurter, Voltage Selector Switch, 2 Stages, Series-Parallel,
SWA1 or SWA2
Also, it’s interesting that the spec sheet says that the
lifetime is 300 operating cycles (without load).
*So, does anyone have a personal experience that was bad with
these switches?*
Also, I think many people would be interested in
recommendations on arming switches both commercial and custom.
Thank you,
Richard Dierking
Attachment:
3 bays small.jpg
Description: JPEG image
Attachment:
98mm small back.jpg
Description: JPEG image
Attachment:
75mm small back.jpg
Description: JPEG image
Attachment:
54mm small.jpg
Description: JPEG image
