smart little part for embedded aviation projects. the catch is that tiny and low power come with some very specific compromises, so this is for people who actually know which packets they care about.
ADSBee m1421
World’s smallest dual-band ADS-B receiver module for embedded aircraft tracking applications
6 ratings4.43
Saves95
CategoryDeveloper Tools
PlatformWeb
PricingPaid
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ADSBee m1421 is an ultra small, low power, dual-band ADS-B receiver module designed for embedded aircraft detect and avoid applications. It supports Mode S and UAT protocols, outputs data via UART in multiple formats, and is customizable with open source firmware. Intended for integration into custom PCB designs, it targets developers needing compact, power-efficient airborne tracking technology.
open-source
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CategoryDeveloper Tools
PlatformsWeb
PricingPaid
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ListedAugust 2026
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Around the Web
Show HN95 source points · 23 comments
Any plans to launch a competitor to the ForeFlight Sentry? The current Sentry is severely overpriced. A normal non ADS-B iPad GPS flight module is almost 10% the price of the Sentry https://www.garmin.com/p/645104/
storywatch · Imported from Show HN
I was about to say, “coolnamesalltaken already has a pretty small one,” but you are them! I’m definitely excited by this project, I have something I wanted to add ADS-B integration to and this looks like an even better option! As for a question, how do you balance low power with performance? Is there a target range or use case to decide the performance envelope?
mysterydip · Imported from Show HN
Finally UAT support! How's the software side though? Last time I looked dump1090 worked well, but there was no way to decode UAT packets. Something on my to-do list, that's now become more plausible with Claude assisting the research.
btreecat · Imported from Show HN
Related (I think). Others? Show HN: ADSBee, an open source dual band embedded ADS-B receiver for anything - https://news.ycombinator.com/item?id=46459195 - Jan 2026 (3 comments)
dang · Imported from Show HN
Looks good. However, an RF question: Both CC1314 and LR2021 are sub 1GHz components, are you not working outside their spec at 1.090GHz?
RachelF · Imported from Show HN