Jan Gromeš

I code stuff. Yeah, that's a description, alright.

[Jan Gromeš @JanGromes]

#RadioLib update 7.6.0 is released, with major new additions - like support for the brand new LR2021 #LoRa radio and ADS-B reception. An of course, improvements and bugfixes from our wonderful community!

https://t.co/E4H2EsWprm

#iot #LoRaWAN

[Jan Gromeš @JanGromes]

#RadioLib update 7.5.0 is out now, including optimized SX126x PA configuration. 25 - 30% power saving during transmission! That adds up quickly, so update & start saving those precious milliwatts!

https://t.co/XA2b1fEZCx

#lora #LoRaWAN #IoT

[Jan Gromeš @JanGromes]

So long, and thanks for all the pictures!

Which are public by the way, licensed under CC-BY-NC-SA ;)

https://t.co/i3mIQcEbcV

[VZLU AEROSPACE @VZLUcz]

🛰️ Družice VZLUSAT-2, která vyfotila "první české vesmírné selfie," shořela v atmosféře. VZLU AEROSPACE zpřístupňuje část dat, která pořídila.
📡VZLUSAT-2 naposledy zachytila německá výzkumná stanice Neumayer Station III na Antarktidě (30. listopadu 2025 v 01:40 UTC (02:40 CET).

[Jan Gromeš @JanGromes]

#RadioLib update 7.3.0 is out now with many improvements and bugfixes - and just in time for The Things Conference next week. If you're there, make sure to not skip Steven's keynote on RadioLib & its LoRaWAN stack!

https://t.co/VJjcuV60Ey

#lora #LoRaWAN #IoT

[Jan Gromeš @JanGromes]

Do you like winning stuff? We are giving away #VZLUSAT2 T-shirts to the 3 best guesses of last contact date and time, which we expect in the next two months! Follow @VZLUcz and comment on the post below until 18.07.2025 23:59 CEST - bonus points if you beat my own estimate ;)

[VZLU AEROSPACE @VZLUcz]

🚨Tipovací výzva: Kdy zanikne družice VZLUSAT-2🚨
Mise končí – uhádnete přesný čas posledního kontaktu?
Pište tipy do komentářů!
🏆 3 nejlepší získají tričko s logem!👕
⏳ Uzávěrka: 18.7.2025, půlnoc
Výherce kontaktujeme zprávou, tak zkontrolujte, že ji můžete přijmout!
#VZLUSAT2

[Jan Gromeš @JanGromes]

#VZLUSAT2 deorbits in roughly 2-3 months - but what a journey this has been! 3+ years in orbit with no signifiacnt failures, still daily delivering payload data!

[VZLU AEROSPACE @VZLUcz]

Měli jsme tu čest u nás přivítat partnery, kteří se podíleli na misi družice VZLUSAT-2! Děkujeme všem, kteří dorazili! ✨
@muni_cz @CVUTPraha ZČU Plzeň @esc_aerospace @TACR_cz @mpo_tweetuje TTS, s.r.o. @konkolyobs @spacemanictech @rigaku @AdvacamC @eltvor @needronix

[Jan Gromeš @JanGromes]

Find Steven over at https://t.co/QaxuXZE58V

[Jan Gromeš @JanGromes]

RadioLib 7.2.0 is out with 50+ bugfixes, new features and a major milestone - its LoRaWAN stack passed full round of compliance testing, making it an easy starting point for LoRaWAN certification! Huge thanks to Steven Boonstoppel for making this happen!

https://t.co/XsxFTEb4bl

[Jan Gromeš @JanGromes]

Smile, you're on camera ;)

[VZLU AEROSPACE @VZLUcz]

FOTOGRAFIE PRAHY: SRDEČNÝ POZDRAV SATURNINA-1 Z OBĚŽNÉ DRÁHY
Česká družice SATurnin-1 vyvinutá ve VZLU AEROSPACE pro @ObranaTweetuje, poslala snímek Prahy. Družice je na oběžné dráze od ledna letošního roku a právě pořizování snímků je jejím hlavním úkolem. @VZpravodajstvi

[Jan Gromeš @JanGromes]

@TheMeshtastic @SemtechCorp Third-party stack here - really looking forward to this one ;)

[Jan Gromeš @JanGromes]

@groundwav36960 @TheMeshtastic SX13xx are fundamentally different beasts than the SX12xx transceivers. SX13xx is a digital signal processor that is intended to handle multiple channels in a gateway, but it needs additional RF frontends. SX12xx is all-in-one transceiver IC, but for 1 channel only.

[Jan Gromeš @JanGromes]

#RadioLib update 7.0.0 is out!

12 other people decided to spend their time to help what started as a tiny hobby project. That is the most contributors there have been so far!

Oh, and we support both #LoRaWAN 1.0.4 and 1.1 now ;)

https://t.co/KjRwWsMJX9

#lora #iot

[Jan Gromeš @JanGromes]

@olegkutkov @scott23192 @tiny__GS SX1262 datasheet claims it can go down to 150 MHz, the older SX1276 is down to 137 MHz. Off the shelf modules will be at the ISM bands, but the link margin of LoRa is usually so massive it will probably hear the odd packet anyway.

[Jan Gromeš @JanGromes]

@scott23192 @tiny__GS Awesome! Looking forward to see the reverse-engineering efforts unfold!

[Jan Gromeš @JanGromes]

@tiny__GS OK, I'll bite - how do you know these are from Starlink?

[Jan Gromeš @JanGromes]

@tiny__GS *Looks at the reported frequency*
Seems unlikely

*Realizes what date it is*
Gotta say you got me for a second there ;)

[Jan Gromeš @JanGromes]

@rnbokade @m17_project @sylvain_azarian Not sure it's needed in the RadioLib upstream, most supported transceivers do not have 4FSK. Then again, CC1101 does, so if anyone wanted to use RadioLib as a driver for M17 over those modules, they probably could do it ;)

[Jan Gromeš @JanGromes]

@pe0sat @VZLUcz @SatNOGS That's not an image, though if one were to keep looking, one would surely figure out which downliks are pictures ;)