Quantity   Component name
3 × ATmega328 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
3 × LIR2450 Rechargeable 120mAh LiPo coin cell
3 × MCP73831 Power Management ICs / Power Supply Support / LiPo charging
1 × Vibration motor
1 × M41T62LC6F Clock and Timer ICs / Real-Time Clocks
1 × RFM95W LoRa module
1 × SUP500F8 GPS Module based on Venus8 chip from Navspark
1 × MAG3110 Tri-dimensional compass