diff --git a/schematic/knob_spi.brd b/schematic/knob_spi.brd
deleted file mode 100644
index ef8899b..0000000
Binary files a/schematic/knob_spi.brd and /dev/null differ
diff --git a/schematic/knob_spi.sch b/schematic/knob_spi.sch
deleted file mode 100644
index 7283be2..0000000
Binary files a/schematic/knob_spi.sch and /dev/null differ
diff --git a/schematic/spi-isp-adapter.sch b/schematic/spi-isp-adapter.sch
deleted file mode 100644
index 59e371c..0000000
Binary files a/schematic/spi-isp-adapter.sch and /dev/null differ