Quantity   Component name
1 × STM32F446RET6 ARM Cortex M4F 168MHZ MCU
1 × ESP-09 Batteries and Battery Accessories / Battery Chargers
1 × 500mA LiPo Battery
1 × 2.5W Solar Voltaic Cell
1 × BQ240210 Solar or VBUS Powered LiPo battery charging IC
8 × 4 Pin JST Connector (Grove)