# Darios Homeautomatation v2
## Hardware
* Arduino Nano v3
* 4x I/O Expander MCP 23017
* 32 Inputs
* Low active
* Buttons to Ground
* 32 Outputs (High active)
* High active
* Relays driven with ULN 2803
* Ethernet
* W5500
## Functionality
* 32 Input Buttons
* detect simultanusly click / double-click / long-click
* 32 Outputs
* High active
* Light
* Power Outlets
* Rollers
* Control with
* Button Events
* MQTT Events
* Monitoring
* MQTT Status Updates
* Serial Debuging Messages
## Libraries
* Adafruit MCP23017 Library (slightly modified )
* two Functions changeed from ''Private'' to ''Public''
```cpp
uint8_t readRegister(uint8_t addr);
void writeRegister(uint8_t addr, uint8_t value);
```