diff --git a/obi/microscope.toml b/obi/microscope.toml
deleted file mode 100644
index 7f0b3ad..0000000
--- a/obi/microscope.toml
+++ /dev/null
@@ -1,16 +0,0 @@
-[instrument_info]
-manufacturer='JEOL'
-model='T330A'
-
-[beam.electron.pinout]
-scan_enable = [-1]
-blank = [2]
-
-[transforms]
-
-[timings]
-ext_switch_delay_ms = 20
-
-[server]
-host = "10.250.240.1"
-port = 1234
diff --git a/obi/obi.nix b/obi/obi.nix
deleted file mode 100644
index e7a2a87..0000000
--- a/obi/obi.nix
+++ /dev/null
@@ -1,50 +0,0 @@
-# nix-build obi.nix
-
-# not callPackage because we need a very new nixpkgs for numpy2
-with import (builtins.fetchTarball {
-  name = "nixos-unstable-2025-10-05";
-  url = "https://github.com/nixos/nixpkgs/archive/e06e469c8e2d893f1f0dcb55bbd9de8904ee0cf5.tar.gz";
-  sha256 = "sha256:174gj7nxcmj4l5dr1iqfr67cl14x1aw3hxqzg716pw0g1qrmjs4w";
-}) {};
-
-python3.pkgs.buildPythonApplication {
-  name = "open-beam-interface";
-  src = fetchFromGitHub {
-    owner = "q3k";
-    repo = "Open-Beam-Interface";
-    rev = "7076782325fe04f146e6c3d126a4a1fe1ff9da8f";
-    hash = "sha256-3Tu2nFx3V5XIgyRb0da/28CxkY7Lscln0F4T98PGyHY=";
-  };
-  pyproject = true;
-
-  nativeBuildInputs = [
-    python3.pkgs.pdm-backend
-  ];
-
-  nativeCheckInput = [
-    python3.pkgs.unittestCheckHook
-  ];
-
-  propagatedBuildInputs = [
-    glasgow
-    yosys
-    nextpnr
-    icestorm
-  ] ++ (with python3.pkgs; [
-    numpy
-    tifffile
-    pillow
-    tomlkit
-    pyqtgraph
-    pyqt6
-    qasync
-  ]);
-
-  check = false;
-
-  preBuild = ''
-    export PDM_BUILD_SCM_VERSION=1.0
-    cd software
-  '';
-}
-