Sentry is a small, fast and agnostic OS for embedded home-made surveillance cameras.

Currently buildale for RaspberryPi 0 W only, but with very few minor tweaks it should work with every Raspberry Pi board.

Once the boot is finished, a camera streaming will be active on 5001 port.

Parameters

• Buildroot: 2019.11 (stable branch)
• Kernel: rpi-5.3.y
• binutils: 2.32
• GCC: 9.2.0 --with-fpu=vfp
• libc: musl

How to Compile

Remember to set your WiFi settings inside build.sh before compiling, or just edit the wpa_supplicant.conf in the /boot partition. This is mandatory if you want an headless start.

Your first build:

./build.sh -c raspberrypi0w

Clean everything and build:

./build.sh -dc raspberrypi0w

To continue a previous build:

./build.sh -m raspberrypi0w

How to Install

The steps for RaspberryPi 0 W:

1. Attach your camera to RaspberryPi 0 W;

2. Install the compiled image to the SD card using BalenaEtcher, Win32DiskImager or such programs;

3. Start the board and it will take rougly 10 seconds to boot up and get its IP address automatically via DHCP.

TO-DO

• Support more boards

Buildroot

Huge thanks to Buildroot (github.com/buildroot), which enables these projects to come alive. They deserve so much support.