Sentry Plus teardown/comparison

comparing the normie Sentry to the new Sentry Plus. Slightly better GPS antenna, twice the battery capacity.
My comparison/chip notes:
tagolas GP.1575 12.4.A.02 gps antenna (vs ceramic antenna)
bigger backplane
two 18650 cells (vs one); INR18650MJ1
ESP32-WROOM-32 xx0h64 (32 on prev board)
ping pf007 on both
sd card on both
Q1L 151 qfp 16-pin, unknown
NEO-M8N-0-10 (on both)

[@skywardviews0]

My sentry plus froze after I initiated an update and won't respond to anything, anyone had that happen to them (if so what did you do)?

[@NorthwestAeronaut]

So now you can build me one for like $19 right? 😅

[@flysport_tedder]

yeah, I mean it's basically a fancy Stratux that actually consistently works.

[@mjshastri]

awesome breakdown. Thank you...

[@alexissuazo3122]

Wow, it seems like both devices can hold two batteries.

[@CD-kd5em]

Is it easy to replace batteries for the plus?

[@flysport_tedder]

No, they're soldered in.

[@indyjons321]

What about the claimed "AHARS" ?

[@flysport_tedder]

Definitely there, it's just hard to pick out the MEMS chip 🙂

[@AloneoYukis]

Are there any chance that we can upgrade gps atenna for better signal for sentry(not plus)?

[@flysport_tedder]

No, not unless you wanted to do some real SMD (de)soldering work.

[@AloneoYukis]

@@flysport_tedder aw.. that will definitely blew off my warranty away.

[@kasm10]

how does it compare to the Garmin gdl 52. trying to decide which to buy

[@flysport_tedder]

I don't know. Certainly the Sentry series only work with Foreflight, so if you're staying in the Garmin world (like Garmin Pilot) the GDL52 would make sense.

[@justinorantes]

Nice comparison. What are the part numbers of the CO sensors? I'd like to lookup a data sheet, as many people have tested and reported that the Sentry models frequently fail to detect CO. Thanks in advance!

[@flysport_tedder]

hey Justin, just went back to my notes but I didn't write down the CO chip, unfortunately. I assume it's something similar to a BME280/BME680. Not saying it's that, just that I'd expect it to be similar. Glad someone appreciates the nerdery! I'm going to add my chip notes to the description.

[@justinorantes]

@@flysport_tedder I believe it is the much larger coin-cell looking component on the face of the PCB. I don't have one otherwise I would take mine apart. Do you have any close up photos in your records that could reveal the part number?

[@tedhughes5187]

The CO sensor is a Figaro 5141