New AVR Node board

Currently I'm testing new design for AVR Node board. In the pictures below you can see main board (on the left) equiped with ATMEGA328P with arduino bootloader, ULN2803A relay driver, and 3A step down converter. This week I'll be testing RTC and FRAM memory module. On the right you can see USB to RS232 module (based on CH340 chip) and LED array controlled with SN74HC595D using SPI communication (for input/output indication).