Quantity   Component name
1 × ATSAMD21G18A-AUT Atmel ® | SMART ™ SAM D21 is a series of low-power microcontrollers using the 32-bit ARM ® Cortex ® -M0+ processor, and ranging from 32- to 64-pins with up to 256KB Flash and 32KB of SRAM.
4 × PCAL6416APW,118 Interface and IO ICs / I2C, SMBus
2 × ST1480ACDR RS485 interface IC
1 × DS2484R+T I2C to 1-wire
1 × NC3FAAH2 Electronic Components / Misc. Electronic Components
2 × TPS62175DQCT Power Management ICs / Switching Regulators and Controllers
1 × ESP-12 ESP8266 WiFI module
1 × ENC28J60 SPI ethernet interface
1 × JDY-10 Bluetooth V4.0 BLE module
1 × PCA9617ADP Interface and IO ICs / I2C, SMBus
1 × SSD1306 I2C LCD