Modified JL AltimeterTwo

[mh9162013]

The Jolly Logic AltimeterTwo doesn't like being used without its case on. But the case won't fit in a BT-20 body tube. So I made a case out of an engine spacer so it'll fit in BT-20 tubing, nice and snug. This modification does not permanently alter the altimeter's case or the inner electronics. In other words, the modification is 100% reversible. The pics should explain everything. And yes, I know it's not very clean, but I want to do a few flights first, to make sure it works as it should. Then I'll spend extra time and effort making it "pretty."

 

[waltr]

Is the air pressure vent hole open to the outside when inserted into the nose cone?

 

[mh9162013]

Is the air pressure vent hole open to the outside when inserted into the nose cone?

The part that sticks out towards the end of the nose-cone payload bay (where you see the Micro-USB port) has some gaps between the cardboard end "cap" and the engine spacer wall that should allow enough air flow to get accurate and consistent data.

When I test this set up, I will also include a MicroPeak altimeter with it to compare results.