Phil currently uses the following combination:
- AAA Energizer Ultimate L92 Lithium power source
- ADP1607 DC-DC Boost Regulator
- STM32F030 Microcontroller
- u-blox MAX-M8x GNSS Receiver
- RFM98W 434MHz LoRa Transceiver Module
- libopencm3-based firmware
- payload-switched config system
- u-blox GNSS aid data storage