Double check with your L3CC. I've read in several places that NAR
dropped that requirement. Personally I think it just adds complexity
and more room for human error.
On Fri, Apr 15, 2016 at 9:52 AM, Rob Derstadt <[email protected]
<mailto:[email protected]>> wrote:
I agree with the horizontal "safe mode" technique. It's what I use
now.
The current NAR requirement states:
"The capability must exist to externally disarm all pyrotechnic
devices on-board the rocket. In this context, ‘disarm’ means the
ability to physically break the connection between a pyrotechnic
system and its power source. ***Simply turning off the device
controlling the pyrotechnic(s) may not be sufficient.***"
4.
So is this really just using the other pole on the rotary switch
to control the battery connection?
On Fri, Apr 15, 2016 at 10:37 AM,
<[email protected]
<mailto:[email protected]>> wrote:
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Today's Topics:
1. Advice on wiring dual Telemetrums for arm/safe? (Rob
Derstadt)
2. Re: Advice on wiring dual Telemetrums for arm/safe? (w9ya)
3. Re: Advice on wiring dual Telemetrums for arm/safe? (w9ya)
4. Re: Advice on wiring dual Telemetrums for arm/safe?
(Chris Attebery)
----------------------------------------------------------------------
Message: 1
Date: Fri, 15 Apr 2016 09:57:17 -0600
From: Rob Derstadt <[email protected]
<mailto:[email protected]>>
To: [email protected] <mailto:[email protected]>
Subject: [altusmetrum] Advice on wiring dual Telemetrums for
arm/safe?
Message-ID:
<cacycnxq1csrdaukeyi2objzegyegspfa4md7fint4peziob...@mail.gmail.com
<mailto:cacycnxq1csrdaukeyi2objzegyegspfa4md7fint4peziob...@mail.gmail.com>>
Content-Type: text/plain; charset="utf-8"
Hello,
I'm trying to work out how to wire up the outputs of two
Telemetrums (one
primary, one backup) so that I can add an extra arm/disarm
rotary switch
between the outputs and the terminal blocks (the NAR L3
requirement to cut
power completely from the pyro's).
This is my initial wiring diagram:
https://github.com/robderstadt/NAR-L3-Project/blob/master/images/plans/GizmoXL_Wiring.png
Normally I'd just *try* it and see what happens, but I don't
want to fry
two board if I get it wrong. I'm also concerned that in the
"safe" position
that the continuity indicator on each board would still
indicate everything
green, which could lead to a launch with the pyro's inhibited.
Has anyone flown this configuration before? If so, any
suggestions on how
to hook it up?
Thanks guys.
-Rob
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Message: 2
Date: Fri, 15 Apr 2016 10:23:24 -0600
From: w9ya <[email protected] <mailto:[email protected]>>
To: Altus Metrum <[email protected]
<mailto:[email protected]>>
Subject: Re: [altusmetrum] Advice on wiring dual Telemetrums for
arm/safe?
Message-ID:
<CAASHNdXAcBka=e8+mvwy+eq1kvvrlaxuhv4jkmdzz6vhpnx...@mail.gmail.com
<mailto:e8%2bmvwy%[email protected]>>
Content-Type: text/plain; charset="utf-8"
Um, please check with your L3CC.....quite a few of them do NOT
want you to
fly with switches in series with your charges !!
Best regards;
Bob F.
On Fri, Apr 15, 2016 at 9:57 AM, Rob Derstadt
<[email protected] <mailto:[email protected]>> wrote:
> Hello,
>
> I'm trying to work out how to wire up the outputs of two
Telemetrums (one
> primary, one backup) so that I can add an extra arm/disarm
rotary switch
> between the outputs and the terminal blocks (the NAR L3
requirement to cut
> power completely from the pyro's).
>
> This is my initial wiring diagram:
>
>
>
https://github.com/robderstadt/NAR-L3-Project/blob/master/images/plans/GizmoXL_Wiring.png
>
> Normally I'd just *try* it and see what happens, but I don't
want to fry
> two board if I get it wrong. I'm also concerned that in the
"safe" position
> that the continuity indicator on each board would still
indicate everything
> green, which could lead to a launch with the pyro's inhibited.
>
> Has anyone flown this configuration before? If so, any
suggestions on how
> to hook it up?
>
> Thanks guys.
>
> -Rob
>
> _______________________________________________
> altusmetrum mailing list
> [email protected] <mailto:[email protected]>
> http://lists.gag.com/mailman/listinfo/altusmetrum
>
>
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Message: 3
Date: Fri, 15 Apr 2016 10:33:25 -0600
From: w9ya <[email protected] <mailto:[email protected]>>
To: Altus Metrum <[email protected]
<mailto:[email protected]>>
Subject: Re: [altusmetrum] Advice on wiring dual Telemetrums for
arm/safe?
Message-ID:
<caashndx4uphxhxgn+rjh1mkk81qomser7p6dioyf3fwwubs...@mail.gmail.com
<mailto:caashndx4uphxhxgn%[email protected]>>
Content-Type: text/plain; charset="utf-8"
P.S.... with the "flight mode" safeguards (turning on the unit
while
oriented horizontally protects you from incidental firing of
charges, and
then rebooting the TM after thee rocket has been placed on the
pad and made
ready for flight) makes the pyro activation switches
essentially redundant
!! (Virtually 100%, um; more or less....)
On Fri, Apr 15, 2016 at 10:23 AM, w9ya <[email protected]
<mailto:[email protected]>> wrote:
> Um, please check with your L3CC.....quite a few of them do
NOT want you to
> fly with switches in series with your charges !!
>
> Best regards;
>
> Bob F.
>
> On Fri, Apr 15, 2016 at 9:57 AM, Rob Derstadt
<[email protected] <mailto:[email protected]>> wrote:
>
>> Hello,
>>
>> I'm trying to work out how to wire up the outputs of two
Telemetrums (one
>> primary, one backup) so that I can add an extra arm/disarm
rotary switch
>> between the outputs and the terminal blocks (the NAR L3
requirement to cut
>> power completely from the pyro's).
>>
>> This is my initial wiring diagram:
>>
>>
>>
https://github.com/robderstadt/NAR-L3-Project/blob/master/images/plans/GizmoXL_Wiring.png
>>
>> Normally I'd just *try* it and see what happens, but I
don't want to fry
>> two board if I get it wrong. I'm also concerned that in the
"safe" position
>> that the continuity indicator on each board would still
indicate everything
>> green, which could lead to a launch with the pyro's inhibited.
>>
>> Has anyone flown this configuration before? If so, any
suggestions on how
>> to hook it up?
>>
>> Thanks guys.
>>
>> -Rob
>>
>> _______________________________________________
>> altusmetrum mailing list
>> [email protected] <mailto:[email protected]>
>> http://lists.gag.com/mailman/listinfo/altusmetrum
>>
>>
>
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Message: 4
Date: Fri, 15 Apr 2016 09:37:09 -0700
From: Chris Attebery <[email protected]
<mailto:[email protected]>>
To: [email protected] <mailto:[email protected]>, Altus Metrum
<[email protected] <mailto:[email protected]>>
Subject: Re: [altusmetrum] Advice on wiring dual Telemetrums for
arm/safe?
Message-ID:
<cap5djdsnvxmzghc_d_nqyxxtkc45q43yapwutx_zkm+jq--...@mail.gmail.com
<mailto:cap5djdsnvxmzghc_d_nqyxxtkc45q43yapwutx_zkm%[email protected]>>
Content-Type: text/plain; charset="utf-8"
I'm pretty sure that NAR dropped that requirement. If your L3CC is
insisting I'd find another.
I'm keeping my L3 wiring EXTREMELY simple. Both altimeters
will be direct
wired to the charges and use a screw switch to the enable
pins. No safe
switches, shunts, or terminal strips to intruduce points of
failure.
On Fri, Apr 15, 2016 at 9:23 AM, w9ya <[email protected]
<mailto:[email protected]>> wrote:
> Um, please check with your L3CC.....quite a few of them do
NOT want you to
> fly with switches in series with your charges !!
>
> Best regards;
>
> Bob F.
>
> On Fri, Apr 15, 2016 at 9:57 AM, Rob Derstadt
<[email protected] <mailto:[email protected]>> wrote:
>
>> Hello,
>>
>> I'm trying to work out how to wire up the outputs of two
Telemetrums (one
>> primary, one backup) so that I can add an extra arm/disarm
rotary switch
>> between the outputs and the terminal blocks (the NAR L3
requirement to cut
>> power completely from the pyro's).
>>
>> This is my initial wiring diagram:
>>
>>
>>
https://github.com/robderstadt/NAR-L3-Project/blob/master/images/plans/GizmoXL_Wiring.png
>>
>> Normally I'd just *try* it and see what happens, but I
don't want to fry
>> two board if I get it wrong. I'm also concerned that in the
"safe" position
>> that the continuity indicator on each board would still
indicate everything
>> green, which could lead to a launch with the pyro's inhibited.
>>
>> Has anyone flown this configuration before? If so, any
suggestions on how
>> to hook it up?
>>
>> Thanks guys.
>>
>> -Rob
>>
>> _______________________________________________
>> altusmetrum mailing list
>> [email protected] <mailto:[email protected]>
>> http://lists.gag.com/mailman/listinfo/altusmetrum
>>
>>
>
> _______________________________________________
> altusmetrum mailing list
> [email protected] <mailto:[email protected]>
> http://lists.gag.com/mailman/listinfo/altusmetrum
>
>
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