Open-ARO Components

Modules

The system is compose of multiple modules (boards) that are properly connected together. The final assembly is held on a PVC IP65 Protection Electrical Box that can withstand exterior installation.

Open-ARO components

Module	Function/Description	Image
MCU Board	This is the brains of the system, it contains the firmware (software that runs in the MCU), and all the related hardware (Ethernet layer, mass storage for the Web Server e user data, etc) The MCU board is based on a 32bit ARM core offering a 462 DMIPS processing power.
Integration Board	This is the board layer that connects the MCU IO pins to the outside components, the MCU board sites under this board.
Ups controller	This module serves as UPS control using the 13V/14V input from the switching power supply, it is connected to the backup battery and manages the battery charge and instantaneous commutation from mains power to battery power in case of need, insuring a permanent 12V output for all the system essential modules.
GSM  Backup link	Optional module that serves as backup communication via GSM network using a regular SIM card to access any GSM operator.
Current sensor	Senses the roof motor current to avoid roof stall and motor overheating
Module RS232	Permits long distance connections between the Integration board and the Weather station/Cloud detector
Step down module	Converts 12V to 5V and 4,5V to power several components
switching supply 12v 33Amps	Main 12V power supply
8 relay board	Main system relays for local applications like lights, IP camera power, dehumidifier, fan, etc.
Power relays	Roof motor high power relays, 3 units.
Limit Switch	This Limit Switch (2 units) serves as sensor for detecting roof position.
IP camera	Optional IP camera to visually monitor observatory activity
Battery	12V backup battery with at least 17Ah capacity, a larger capacity deep cycle battery is preferred.
Cloud-Detector