diff --git a/board/boundarydevices/common/readme.txt b/board/boundarydevices/common/readme.txt
index d1bb3fa598..307cfb5549 100644
--- a/board/boundarydevices/common/readme.txt
+++ b/board/boundarydevices/common/readme.txt
@@ -40,3 +40,9 @@ Where 'sdX' is the device node of the uSD partition.
 To upgrade u-boot, cancel autoboot and type:
 
 > run upgradeu
+
+See Boundary Devices's buildroot-external-boundary project
+for additional and advanced defconfigs using Qt5, gstreamer,
+NXP proprietary packages with demo applications:
+
+https://github.com/boundarydevices/buildroot-external-boundary