[NRVR-Members] Jolly Logic is Providing Free Reflashes to the Latest Firmware version (fixes various bugs)

Adrien Drouault adrien.drouault at gmail.com
Thu May 17 10:50:55 CDT 2018

Excellent; now all I need to do is find my missing rocket.

On Wed, May 16, 2018 at 10:11 PM, Thomas Tweeks Weeks <
tweeks-junk2 at theweeks.org> wrote:

> Hey all..
> I've had a week of email exchanges with John Bean, the founder and
> president of Jolly Logic. He's an awesome engineer and we discussed the
> theory of operation of the JLCR and he filled me in on some depth theory of
> the Chute Release (he's a control systems graduate from Berkley and we
> really geeked out). He even stepped me through their flight logic, layers
> of data filtering and state detection they go through during the various
> stages of flight.
> Cool stuff.
> Anyway, I described the various failure modes of the Chute Release that
> we've seen and I've been taking notes on since last November (including my
> own human-error issues with using the device incorrectly (which he
> appreciated)), but specifically the JLCR's failure-to-open at all that has
> now bitten several of us.  He said that is was a very rare failure mode but
> that there were a few different failures and ways that the ground level
> cailbration could become confused during packing in early rev firmware
> versions (e.g. on 1.1 specifically). I even got him to post a simple change
> log (of the firmware versions & fixes) on the JLCR page here:
> https://www.jollylogic.com/products/chuterelease/
> All this to say, if anyone wants to check your JLCR firmware version and
> look into getting it updated.. then just follow these directions:
> *1) Check Your Firmware Version:*
> First, power up your JLCR and and watch for the first digit of your
> version# to flash on the battery gauge, and the second digit (after the .)
> blinks on the altitude scale (e.g. v1.2 shows blinks the FIRST LED of the
> battery indicator, then the SECOND LED on the altitude's LED array .. =
> v1.2).
> Here's a small animation to illustrate:
> *2) If your firmware is < 1.3:* (current latest)
> Then Send an email to support at jollylogic.com letting them know you're
> sending it in for an upgrade reflash, along with your phone# and return
> postal address.
> *3) Print Email & Ship:*
> Safely package up and mail you JLCR in to:
> Jolly Logic
> 231 Daylight Place
> Danville, CA 94526 US
> and include a printed copy of your email to them. They will reflash it,
> test it in a vacuum chamber for accuracy and Priority Mail it back to you
> at no charge.
> I'm shipping mine off now (not using it on any of my nicer Rockets until
> I'm running v1.3).
> Cheers,
> Tweeks
> _______________________________________________
> NRVR-Members mailing list
> NRVR-Members at mail.nrvr.org
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*Quid quid latine dictum sit altum viditar.*
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