Ever felt that sudden urge to check who is at the front door while you are busy in your room? A self-hosted surveillance system is not just about catching intruders; it is about providing peace of mind for your entire family. Today, we are building a professional-grade security setup using Reolink cameras, Frigate NVR, and Home Assistant integration.
In our modern world, privacy and reliability are paramount. While many people choose cloud-based cameras, those systems often require monthly subscriptions and can stop working if the internet goes down. By building our own system, we keep our data inside our house and ensure that the cameras work 24/7. For this project, I have selected Reolink cameras. Specifically, the RLC-510A turret cameras and the Duo 3 PoE panoramic camera. Reolink is an excellent choice because they offer high-quality hardware at a reasonable price and, most importantly, they support the RTSP (Real-Time Streaming Protocol) which allows us to use our own recording software.
Before we mount the cameras, we must address the backbone of the system: the network. We are using Power over Ethernet (PoE) technology. This is a very clever system that allows a single Cat5e cable to carry both electricity and data to the camera. It simplifies the installation because you do not need to find a power outlet near every camera location. While some people might suggest using Cat6 cable, Cat5e is perfectly sufficient for high-definition video streams over typical residential distances. It is also thinner, which makes it much easier to pull through tight spots in the attic or through conduit pipes.
To power these cameras, I am using an industrial-grade unmanaged PoE switch. This switch acts like a power strip for your network cables. I have decided to install this switch in a central location in the attic. However, attics can get extremely hot or cold depending on the season. Therefore, it is vital to choose a switch that is rated for high operating temperatures—up to 80 degrees Celsius—to prevent the system from overheating and failing during a summer heatwave.
The physical installation often presents the most challenges. Ideally, you would want all your cables hidden inside the walls or the ceiling. In some cases, you might encounter structural beams that make it impossible to run wires exactly where you want them. To solve this, we use junction boxes, such as the Reolink B10. These boxes are mounted to the exterior of the house and allow a safe, waterproof space to store the camera’s “pigtail” (the bunch of connectors at the end of the camera cable). If the camera is white but your house trim is black, a simple can of black spray paint can help the hardware blend in so it does not look like an eyesore.
Once the cameras are mounted and wired, we need a “brain” to record the video and analyze what is happening. This is where the Network Video Recorder (NVR) comes in. Instead of buying a pre-made NVR box, which often has limited software, we are building a powerful server using a mini PC. For this setup, I am using a LincPlus N2 equipped with an Intel N100 processor. This little computer is perfect because it uses very little electricity but has enough power to handle multiple high-resolution video streams.
For the software, we are installing Frigate NVR. Frigate is an open-source tool that runs inside a Docker container on the Debian 13 operating system. What makes Frigate special is its ability to use Artificial Intelligence (AI) to detect objects. It doesn’t just see motion like a tree blowing in the wind; it actually understands when it sees a person, a car, or a dog. While many users try to use a Coral TPU (Tensor Processing Unit) to speed up this AI detection, the Intel N100 has a built-in Graphics Processing Unit (GPU) that can handle these tasks using a technology called OpenVINO. This makes the detection incredibly fast and accurate without needing extra hardware.
Finally, we integrate everything into Home Assistant. By doing this, we can create smart automations. For example, if the doorbell camera detects a person walking up to the porch after 7:00 PM, Home Assistant can automatically turn on the porch lights and send a notification with a snapshot to your phone. This turns a simple camera into a proactive security guard for your home.
Building a surveillance setup requires patience, especially when configuring YAML files or pulling cables through a dusty attic. However, the result is a robust, private, and subscription-free system that protects your home. I recommend that you start small with two or three cameras and gradually expand your network as you become more comfortable with the software. For your next step, consider setting up a dedicated VLAN (Virtual Local Area Network) for your cameras to keep them isolated from the rest of your home internet for even better security.