Lightest / Smallest DD

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dhbarr

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Is it so that the smallest / lightest commercially available fully redundant dual deploy is:
- 2x Bear SMT DD altimeters
- 2x Prairie Twister ( Archetype ) Cutters
- 1x Fruity Hyper-Mega-Ultra
- 1x Falcon Tracker
?

If replacing one of the Bears and one of the Prairies, what are the next tiniest options?
 

vance2loud

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I normally use a raven and a bear smd duo, the bear stays in the rocket as I have multiple of them and I swap the raven between rockets.
I have asked about the option of adding a delay to the bears so they can be better utilised as a backup altimeter, and it might be added as an option when/if the board gets redesigned.
The eggtimer Quark is another very small DD altimeter worth considering.
There are a few different views on the subject, but I prefer to use 2 different altimeters in case I mess up programming one
 

AdAstraPerAspera

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Who makes the bear altimeters? I've never heard of them before.
 

dhbarr

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The eggtimer Quark is another very small DD altimeter worth considering.
There are a few different views on the subject, but I prefer to use 2 different altimeters in case I mess up programming one
I have a couple of Eggs, but please do continue the discussion on " a few different views " . :)
 

rharshberger

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Who makes the bear altimeters? I've never heard of them before.

https://rocket.payload.free.fr/

Looks like the smallest Bear DD altimeter the AltiDuoSMT is actually about 1mm narrower and 12mm longer than a Eggtimer Quark until the AltiDuoSMT Micro is done (no specs for it). The Eggtimer Quark might be one of the smallest currently available.
 

dhbarr

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https://rocket.payload.free.fr/

Looks like the smallest Bear DD altimeter the AltiDuoSMT is actually about 1mm narrower and 12mm longer than a Eggtimer Quark until the AltiDuoSMT Micro is done (no specs for it). The Eggtimer Quark might be one of the smallest currently available.
I have the AltiDuo SMT Micro; it is the smallest / lightest DD alti currently available AFAICT. The Duo-SMT-not-micro is unavailable.

"New altimeters are 51mm x 18mm and approximatly 7g
They use 1 cell battries (3,7V 400mA or 200mA should be enought) note that you can also use 2 or 3 cell batteries but it will be heavier so unless you already have them there is no point" --Boris de Reau

Good point on reminding me about finishing my Quark, though; need to get a solder station and some magnifiers.
 
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rharshberger

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dhbarr

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cerving

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https://rocket.payload.free.fr/

Looks like the smallest Bear DD altimeter the AltiDuoSMT is actually about 1mm narrower and 12mm longer than a Eggtimer Quark until the AltiDuoSMT Micro is done (no specs for it). The Eggtimer Quark might be one of the smallest currently available.
I could make the Quark even smaller too, but you need a battery so there's no sense getting crazy about it...

The Quark doesn't quite fit in an 18mm tube, but if you sand a little off the edges and leave off the headers (just solder jumpers) it will. I did it once for fun, unfortunately the itty bitty rocket got lost in the weeds at Santa Fe Dam.
 
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