First look at Vanguard:

• Attiny3227
• WIO SX1262 LORA module
• 1x UART
• IR Strobe
• User button
• Basic charging circuit for 3.7V LiPos
• 1x beautiful logo

Time

I actually did around 6 hours (flow state really captures you), but I didn’t know about hackatime and all that jazz.

About the board

Honestly, most of the board is power supply stuff. I’m just so happy that everything was relatively smooth. Signal integrity wasn’t hard to maintain either, and everything is nice and clean according to the DRC.

The Plan

I still have to spend time working on this circuit, as I probably did something stupid. Then I have to write the firmware, and then CAD a rugged case. Everything should come out at around $50 plus shipping and production fees.

Conclusion

Honestly, I see this project going places. It’s definitely not defense-grade, but I guess it’s more of a proof of concept - compact LoRa buddy that is adaptable, debuggable, and extremely capable. Whether it’s your backpack, a helmet, or even on a robot, this thing is gonna be built to last. Thank you for all your support!