Production-defensible Rev B ear tag tracker using nRF9151 with separate LTE and GNSS antennas, solar-assisted LiPo charging, battery protection, SPI NOR flash, NFC, eSIM, I2C sensors, Tag-Connect SWD, grouped EVT test points, and RF/power zoning on a 40 mm x 24 mm 4-layer PCB.

Ultra-Compact 4-Layer ESP32-C6 + Quectel EG912U LTE Dev Board w/ Onboard eSIM, π-Match RF Tuning, Optional u.FL, USB-C Data (ESP32-C6 Only), USB-C Battery Charging, Controlled Impedance Routing #EG912U #USBDataOnly #USBCharging #4Layer #eSIM

Introducing the Outer Gold Scramble Suit – a mechanical adapter engineered to convert eSIM to MicroSIM using standard contact dimensions. With a strong focus on mechanical design requirements, this project embodies precision engineering, robust construction, and streamlined functionality. The finalized specifications pave the way for detailed mechanical drafting and layout, ensuring the adapter meets optimal performance and durability standards for diverse applications. #MechanicalAdapter #DesignRequirements #eSIM #MicroSIM #PrecisionEngineering #RobustDesign #DraftingPhase

ESP32-based cellular IoT board using a Telit Cinterion TX62-W LTE-M/NB-IoT modem with integrated eSIM/eUICC support, UART host control, and dedicated power/RF design blocks.