Yes. If you want to build your own from scratch you can do so. We have built and pre-configured the Raspberry Pi and the ad blocking software to work out of the box with minimal set-up for home use.
To build your own you will need to purchase the following items
- Raspberry Pi microcomputer
- Appropriate power supply
- Network cable
- MicroSD card
- Appropriate case
- MicroSD card adaptor
When you have all of the components you will need to
- Write a Raspbian OS image to your SD card
- Configure Raspbian
- Install and configure the ad blocking software for your network
- Change your routers DHCP setup
There are plenty of guides available on the web that can help you build your own from scratch.