These hubs are self-made IoT devices using [Raspberry Pi's](https://www.raspberrypi.com/products/raspberry-pi-4-model-b/) on [Raspbian](https://www.raspberrypi.com/software). They provide cameras and IR remotes to control televisions, which can be used with Chromecasts to project [AniNIX/Yggdrasil](../Yggdrasil/) media for users to view. Usually, they'll be wrapped in a maker case with a cellphone 5A charger on a wall mount.

# Relevant Files and Configuration

For the camera, we use the [motion](https://motion-project.github.io/motion_config.html) service to control the Raspberry Pi [camera module](https://www.raspberrypi.com/products/camera-module-v2/). This is reflected in the motion config.

For the IR control we use an [IR shield](https://www.amazon.com/s?k=Raspberry+pi+infrared+expansion+board+IR+transmitter&ref=nb_sb_noss) controlled by the [lircd](https://www.lirc.org/) service. As a note, in order for this to work, you have to set the pinout in the `/boot/config.txt` -- we try to default this in, but you may need to set `gpio_in_pin` and `gpio_out_pin` attributes for your particular board and shield.

We also set up an SNMPv3 daemon service on the hubs, to work with their IR control. This snmpd requires the Geth OVA to add snmpget using `apk update && apk add net-snmp-tools` from the `Terminal & SSH` add-on. Covers can then be added from the [command-line integration](https://www.home-assistant.io/integrations/command_line/). They'll look something like this:

```
  - cover:
        command_open: bash /config/snmp.sh 10.0.1.32 .1.3.6.1.4.1.8072.1.3.2.4.1.2.5.112.111.119.101.114.1 # NET-SNMP-EXTEND-MIB::nsExtendOutLine."power".1
        command_close: bash /config/snmp.sh 10.0.1.32 .1.3.6.1.4.1.8072.1.3.2.4.1.2.6.99.111.110.102.105.103.1 # NET-SNMP-EXTEND-MIB::nsExtendOutLine."config".1
        command_stop: bash /config/snmp.sh 10.0.1.32 .1.3.6.1.4.1.8072.1.3.2.4.1.2.5.101.110.116.101.114.1 # NET-SNMP-EXTEND-MIB::nsExtendOutLine."enter".1
        name: livingroom_power
  - cover:
        command_open: bash /config/snmp.sh 10.0.1.32 .1.3.6.1.4.1.8072.1.3.2.4.1.2.8.118.111.108.117.109.101.117.112.1 # NET-SNMP-EXTEND-MIB::nsExtendOutLine."volumeup".1
        command_close: bash /config/snmp.sh 10.0.1.32 .1.3.6.1.4.1.8072.1.3.2.4.1.2.10.118.111.108.117.109.101.100.111.119.110.1 # NET-SNMP-EXTEND-MIB::nsExtendOutLine."volumedown".1
        command_stop: bash /config/snmp.sh 10.0.1.32 .1.3.6.1.4.1.8072.1.3.2.4.1.2.4.109.117.116.101.1 # NET-SNMP-EXTEND-MIB::nsExtendOutLine."mute".1
        name: livingroom_volume
```