Simeon Ivanov

Embedded systems engineer, open source software and hardware, networking and home automation enthusiast. Founder of the HobbyIoT adventure.

[Simeon Ivanov @sivanovbg]

Hey! Our project has hundreds of views already but no likes or comments yet! Be the first to ask a question!

https://t.co/ViEUTXVeYe

#IoT #Arduino #opensource

[Elecrow @Elecrow1]

📢 Notice: The H2S-Dev Board Creative Idea Contest is LIVE!
Jointly hosted by #Elecrow Project Community & @HobbyIoT (the creators of H2S-Dev) 👋🏻

🧠 What is the H2S-Dev Board?
✅Out-of-the-box: Open-source hardware, Arduino-compatible, LoRaWAN / Helium-ready
✅ All-in-one: #ESP32 + #LoRa radio, Wi-Fi, BLE, plenty of GPIO, on-board prototyping area.

🚀 How to join?
Enter either a wild concept sketch or a working prototype—both must feature at least one H2S-Dev board to qualify.

📅 Timeline
Submissions open: 20 Jul – 1 Sep 2025
Winners revealed: 16 Sep 2025
Prizes: the top 3 winners each score a 100 % free H2S-Dev kit.

🎯 Submit Your Idea Today! #H2SDevContest 👇
https://t.co/6eyTKM5KLP

[Erin @ArainL28385]

🚀 Excited to announce the H2S-Dev Board designed by @HobbyIoT is now live on @Elecrow1 !
✅ Arduino-compatible
✅ Open-source hardware
✅ Supports multiple sensors & positioning (Full variant)
✅ Built for the Helium LoRaWAN network
Check it out now! https://t.co/vdgMIiBRJr

[Erin @ArainL28385]

🎄✨ Merry Christmas to you all! !!🎅

Wishing everyone a holiday filled with love, joy, and plenty of festive cheer! 🎁🥰

[Carl Bugeja @BugejaCarl]

Small teaser of my next project! It's been 3 years in the making but I'm finally ready to release a better PCB motor! Video should be published in a week or two ✌️ stay tuned

[HobbyIoT @HobbyIoT]

The H2S-Dev open source hardware board entered the competition in the PCBWay 7th Project Design Contest!

If you like it - vote for that project today!

https://t.co/ZboDbmurGB

@PCBWayOfficial #Arduino #IoT #LoRa #Helium

[OpenFest @openfestbg]

#OpenFest2024 си партнира с Технологично училище Електронни системи (ТУЕС) и @aztues

[HobbyIoT @HobbyIoT]

Did you remember that good old project using the nice and beloved ESP8266?

Read the article at #Patreon today!

https://t.co/deICeyse7S
(Registration is required)

@EspressifSystem #Arduino #OSHWA #OpenSource #hardware #Software

[HobbyIoT @HobbyIoT]

Where it all started from with the H2S-Dev open source hardware board?

Read our article at #Patreon today!

https://t.co/EyFtpoCbaH
(Registration is required)

#Arduino #OSHWA #LoRa #LoRaWAN #ESP32 #OpenSource #Helium #hardware #Software

[HobbyIoT @HobbyIoT]

Read our new article at #Patreon !

👉How the LoRa antenna PCB trace was designed

Thanks, @PCBWayOfficial for sponsoring that project!

https://t.co/g6sKBQ08PY

#Arduino #OSHWA #LoRa #LoRaWAN #ESP32 #OpenSource

[PCBWay @PCBWayOfficial]

🙀How popular is @PCBWayOfficial , really?
We won the MOST SCANNED EXHIBITOR Award at the #HK #electronicsFair AE
（📍Booth: 5B-A02 ) !

[HobbyIoT @HobbyIoT]

Read our new article at #Patreon !

👉How The H2S-Dev project was boosted up

Thanks, @PCBWayOfficial for sponsoring that project!

https://t.co/j2ECpOFBmD

#Arduino #OSHWA #LoRa #LoRaWAN #ESP32 #OpenSource

[PCBWay @PCBWayOfficial]

Helium #IoT Network Sensor Development board | H2S-Dev V1.2 @HobbyIoT
It is a ready-to-use, Open source hardware, #Arduino compatible, LoRaWAN Helium #network sensor development board. It is capable of implementing a number of sensor and positioning applications.

-More info: https://t.co/kRAZijGUj4

[PCBWay @PCBWayOfficial]

#WoTS Exhibition (Utrecht, The #Netherlands)
Come and explore our #PCB\#PCBA and mechanical Parts samples.

⏰Time: 24th - 27th September
📍 Booth: 9B090

[HobbyIoT @HobbyIoT]

The H2S-Dev V1.2 bring up is complete. See the DS18B20 temperature sensor connected into the development area grid!
Thank you, @PCBWayOfficial for boosting the project up with your sponsorship!
👉Keep an eye on The HobbyIoT Adventure channels for updates:
https://t.co/DeY7oFOpVf

[Simeon Ivanov @sivanovbg]

Did you noticed the Helium IoT Network Sensor Development board V1.2 brief hardware review?

https://t.co/40pi82EmEc

🦉Details are coming soon! Stay tuned!

[HobbyIoT @HobbyIoT]

See the H2S-Dev V1.2 DC/DC converter operation! Scope diagrams show excellent operation!
Thank you, @PCBWayOfficial for the precise bill of materials processing!
More information about the H2S-Dev V1.2 hardware: https://t.co/DvU98FwIZc
👉Final step: Connect a sensor! Stay tuned!

[HobbyIoT @HobbyIoT]

Take a closer look at the new H2S-Dev V1.2 prototypes arrived right from the factory!
With a perfect centered drill and solder mask and excellent soldering, the boards are ready for power on!
Thank you, @PCBWayOfficial for the precise work!
👉Next step: PCB bring up! Stay tuned!

[HobbyIoT @HobbyIoT]

The new V1.2 prototypes of Helium IoT Network Sensor Development board (H2S-Dev) arrived today!
Very nice individual safety packing!
Excellent PCB quality and precise soldering!
Thanks, @PCBWayOfficial for the fast and reliable service!
👉Next step: PCB bring up! Stay tuned!

[PCBWay @PCBWayOfficial]

🥳Join the PCBWay 7th Project Design Contest!🎉

🚀This competition is an excellent platform for electronics enthusiasts and designers to showcase their creativity and innovation.
🏆This year, we're offering a special bonus for projects featuring STM32 chips—giving you a chance to win even more rewards! https://t.co/yxhogqRwcQ