diff --git a/flows/main.json b/flows/main.json
index 0dbe7ef..0d9d847 100644
--- a/flows/main.json
+++ b/flows/main.json
@@ -829,168 +829,6 @@
         "width": 4,
         "height": 1
     },
-    {
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-        "type": "ui_spacer",
-        "name": "spacer",
-        "group": "1be83144.4fe4bf",
-        "order": 4,
-        "width": 3,
-        "height": 1
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-        "type": "ui_spacer",
-        "name": "spacer",
-        "group": "1be83144.4fe4bf",
-        "order": 6,
-        "width": 3,
-        "height": 1
-    },
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-        "type": "ui_spacer",
-        "name": "spacer",
-        "group": "1be83144.4fe4bf",
-        "order": 7,
-        "width": 3,
-        "height": 1
-    },
-    {
-        "id": "5bbb684a.85e138",
-        "type": "ui_spacer",
-        "name": "spacer",
-        "group": "1be83144.4fe4bf",
-        "order": 9,
-        "width": 3,
-        "height": 1
-    },
-    {
-        "id": "11b62f82.d3965",
-        "type": "ui_spacer",
-        "name": "spacer",
-        "group": "1be83144.4fe4bf",
-        "order": 10,
-        "width": 4,
-        "height": 1
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-        "type": "ui_spacer",
-        "name": "spacer",
-        "group": "1be83144.4fe4bf",
-        "order": 12,
-        "width": 4,
-        "height": 1
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-        "group": "1be83144.4fe4bf",
-        "order": 14,
-        "width": 8,
-        "height": 1
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-        "type": "ui_spacer",
-        "name": "spacer",
-        "group": "1be83144.4fe4bf",
-        "order": 6,
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-        "height": 1
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-        "type": "ui_spacer",
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-        "group": "1be83144.4fe4bf",
-        "order": 7,
-        "width": 12,
-        "height": 1
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-        "group": "1be83144.4fe4bf",
-        "order": 8,
-        "width": 12,
-        "height": 1
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-        "group": "1be83144.4fe4bf",
-        "order": 9,
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-        "type": "ui_spacer",
-        "name": "spacer",
-        "group": "1be83144.4fe4bf",
-        "order": 11,
-        "width": 3,
-        "height": 1
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-        "type": "ui_spacer",
-        "name": "spacer",
-        "group": "1be83144.4fe4bf",
-        "order": 12,
-        "width": 4,
-        "height": 1
-    },
-    {
-        "id": "61749739.bde6a",
-        "type": "ui_spacer",
-        "name": "spacer",
-        "group": "1be83144.4fe4bf",
-        "order": 14,
-        "width": 4,
-        "height": 1
-    },
-    {
-        "id": "1ce5fab4.b4ba3d",
-        "type": "ui_spacer",
-        "name": "spacer",
-        "group": "1be83144.4fe4bf",
-        "order": 15,
-        "width": 12,
-        "height": 1
-    },
-    {
-        "id": "67214b13.71efb4",
-        "type": "ui_spacer",
-        "name": "spacer",
-        "group": "1be83144.4fe4bf",
-        "order": 16,
-        "width": 12,
-        "height": 1
-    },
-    {
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-        "type": "ui_spacer",
-        "name": "spacer",
-        "group": "1be83144.4fe4bf",
-        "order": 18,
-        "width": 8,
-        "height": 1
-    },
     {
         "id": "cfe2288f.a8862",
         "type": "ui_group",
@@ -1029,6 +867,116 @@
         "width": 3,
         "height": 1
     },
+    {
+        "id": "cee2ca2f.3dfe18",
+        "type": "ui_group",
+        "z": "",
+        "name": "Default",
+        "tab": "b0fb559a.6966a8",
+        "order": 1,
+        "disp": false,
+        "width": "6",
+        "collapse": false
+    },
+    {
+        "id": "7551712b.8ef1b8",
+        "type": "ui_spacer",
+        "name": "spacer",
+        "group": "1be83144.4fe4bf",
+        "order": 5,
+        "width": 12,
+        "height": 1
+    },
+    {
+        "id": "74adb5c6.b38aa4",
+        "type": "ui_spacer",
+        "name": "spacer",
+        "group": "1be83144.4fe4bf",
+        "order": 6,
+        "width": 12,
+        "height": 1
+    },
+    {
+        "id": "5296bfb6.a27f6",
+        "type": "ui_spacer",
+        "name": "spacer",
+        "group": "1be83144.4fe4bf",
+        "order": 7,
+        "width": 3,
+        "height": 1
+    },
+    {
+        "id": "4179b30f.de0144",
+        "type": "ui_spacer",
+        "name": "spacer",
+        "group": "1be83144.4fe4bf",
+        "order": 9,
+        "width": 3,
+        "height": 1
+    },
+    {
+        "id": "8c8cf500.19fde",
+        "type": "ui_spacer",
+        "name": "spacer",
+        "group": "1be83144.4fe4bf",
+        "order": 10,
+        "width": 12,
+        "height": 1
+    },
+    {
+        "id": "a39d5554.7b4f38",
+        "type": "ui_spacer",
+        "name": "spacer",
+        "group": "1be83144.4fe4bf",
+        "order": 11,
+        "width": 12,
+        "height": 1
+    },
+    {
+        "id": "9694f7f4.22987",
+        "type": "ui_spacer",
+        "name": "spacer",
+        "group": "1be83144.4fe4bf",
+        "order": 12,
+        "width": 4,
+        "height": 1
+    },
+    {
+        "id": "8bd48fcc.096fc",
+        "type": "ui_spacer",
+        "name": "spacer",
+        "group": "1be83144.4fe4bf",
+        "order": 14,
+        "width": 4,
+        "height": 1
+    },
+    {
+        "id": "f01875cc.409c4",
+        "type": "ui_spacer",
+        "name": "spacer",
+        "group": "1be83144.4fe4bf",
+        "order": 15,
+        "width": 12,
+        "height": 1
+    },
+    {
+        "id": "8290ff38.260b6",
+        "type": "ui_spacer",
+        "name": "spacer",
+        "group": "1be83144.4fe4bf",
+        "order": 17,
+        "width": 8,
+        "height": 1
+    },
+    {
+        "id": "f0eab4f4.40bc08",
+        "type": "ui_spacer",
+        "name": "spacer",
+        "group": "4248342d.e55fac",
+        "order": 2,
+        "width": 5,
+        "height": 1
+    },
     {
         "id": "4e78af2d.90be7",
         "type": "ui_ui_control",
@@ -1504,7 +1452,7 @@
         "type": "python3-function",
         "z": "1371dec5.76e671",
         "name": "fan control",
-        "func": "#!/usr/bin/python\nimport smbus\n\nstate = msg[\"payload\"]\n\nbus = smbus.SMBus(1)\n\nDEVICE_ADDRESS = 0x0d\n\n# command happens twice, for reasons\nif state == \"off\":\n    bus.write_byte_data(DEVICE_ADDRESS, 0x08, 0x00)\n    bus.write_byte_data(DEVICE_ADDRESS, 0x08, 0x00)\nif state == \"on\":\n    bus.write_byte_data(DEVICE_ADDRESS, 0x08, 0x01)\n    bus.write_byte_data(DEVICE_ADDRESS, 0x08, 0x01)\n",
+        "func": "#!/usr/bin/python\nimport smbus\n\nstate = msg[\"payload\"]\n\nbus = smbus.SMBus(1)\n\nDEVICE_ADDRESS = 0x0d\n\ntry:\n    # command happens twice, for reasons\n    if state == \"off\":\n        bus.write_byte_data(DEVICE_ADDRESS, 0x08, 0x00)\n        bus.write_byte_data(DEVICE_ADDRESS, 0x08, 0x00)\n    if state == \"on\":\n        bus.write_byte_data(DEVICE_ADDRESS, 0x08, 0x01)\n        bus.write_byte_data(DEVICE_ADDRESS, 0x08, 0x01)\nexcept:\n    pass",
         "outputs": 1,
         "x": 1110,
         "y": 40,
@@ -1634,8 +1582,8 @@
         "fwdInMessages": true,
         "resendOnRefresh": false,
         "templateScope": "local",
-        "x": 110,
-        "y": 100,
+        "x": 130,
+        "y": 60,
         "wires": [
             []
         ]
@@ -1826,7 +1774,7 @@
         "name": "down",
         "group": "fbd92986.1028c8",
         "order": 5,
-        "width": 5,
+        "width": 4,
         "height": 1,
         "passthru": true,
         "label": "",
@@ -1851,8 +1799,8 @@
         "z": "bccd1f23.87219",
         "name": "up",
         "group": "fbd92986.1028c8",
-        "order": 2,
-        "width": 5,
+        "order": 1,
+        "width": 4,
         "height": 1,
         "passthru": false,
         "label": "",
@@ -2762,8 +2710,8 @@
         "level": "0",
         "freq": "",
         "out": "out",
-        "x": 450,
-        "y": 40,
+        "x": 550,
+        "y": 120,
         "wires": []
     },
     {
@@ -2881,7 +2829,7 @@
         "z": "bccd1f23.87219",
         "name": "stop focus",
         "group": "fbd92986.1028c8",
-        "order": 6,
+        "order": 9,
         "width": 0,
         "height": 0,
         "passthru": true,
@@ -2920,8 +2868,8 @@
         "z": "bccd1f23.87219",
         "name": "",
         "group": "fbd92986.1028c8",
-        "order": 1,
-        "width": 5,
+        "order": 3,
+        "width": 3,
         "height": 1,
         "passthru": false,
         "label": "UP 1mm",
@@ -2946,8 +2894,8 @@
         "z": "bccd1f23.87219",
         "name": "",
         "group": "fbd92986.1028c8",
-        "order": 4,
-        "width": 5,
+        "order": 7,
+        "width": 3,
         "height": 1,
         "passthru": false,
         "label": "DOWN 1mm",
@@ -2974,7 +2922,7 @@
         "label": "Focus Distance",
         "tooltip": "in µm",
         "group": "fbd92986.1028c8",
-        "order": 3,
+        "order": 4,
         "width": 0,
         "height": 0,
         "passthru": true,
@@ -6034,7 +5982,7 @@
         "z": "9daf9e2b.019fc",
         "name": "",
         "group": "1be83144.4fe4bf",
-        "order": 17,
+        "order": 16,
         "width": 2,
         "height": 1,
         "passthru": false,
@@ -6046,7 +5994,6 @@
         "payload": "reboot",
         "payloadType": "str",
         "topic": "reboot",
-        "topicType": "str",
         "x": 420,
         "y": 680,
         "wires": [
@@ -6080,7 +6027,7 @@
         "z": "9daf9e2b.019fc",
         "name": "",
         "group": "1be83144.4fe4bf",
-        "order": 19,
+        "order": 18,
         "width": 2,
         "height": 1,
         "passthru": false,
@@ -6092,7 +6039,6 @@
         "payload": "shutdown",
         "payloadType": "str",
         "topic": "shutdown",
-        "topicType": "str",
         "x": 410,
         "y": 760,
         "wires": [
@@ -6414,7 +6360,7 @@
         "level": "1",
         "freq": "",
         "out": "out",
-        "x": 410,
+        "x": 400,
         "y": 80,
         "wires": []
     },
@@ -6428,7 +6374,7 @@
         "level": "1",
         "freq": "",
         "out": "out",
-        "x": 420,
+        "x": 400,
         "y": 120,
         "wires": []
     },
@@ -6558,7 +6504,7 @@
         "z": "9daf9e2b.019fc",
         "name": "Update",
         "group": "1be83144.4fe4bf",
-        "order": 10,
+        "order": 8,
         "width": 6,
         "height": 1,
         "passthru": false,
@@ -7679,7 +7625,7 @@
         "label": "",
         "tooltip": "",
         "place": "",
-        "group": "6be36295.0ab324",
+        "group": "cee2ca2f.3dfe18",
         "order": 3,
         "width": 3,
         "height": 1,
@@ -7823,7 +7769,7 @@
         "name": "stepper_reverse",
         "label": "Invert stepper output",
         "tooltip": "Stepper 1 is controlled by output 1 or the other way around",
-        "group": "6be36295.0ab324",
+        "group": "cee2ca2f.3dfe18",
         "order": 4,
         "width": 0,
         "height": 0,
@@ -7882,7 +7828,7 @@
         "name": "pump_steps_per_ml",
         "label": "Pump: steps per mL",
         "tooltip": "",
-        "group": "6be36295.0ab324",
+        "group": "cee2ca2f.3dfe18",
         "order": 5,
         "width": 0,
         "height": 0,
@@ -7903,7 +7849,7 @@
         "id": "be888117.5cd67",
         "type": "ui_template",
         "z": "1eaf21c8.f7a21e",
-        "group": "6be36295.0ab324",
+        "group": "cee2ca2f.3dfe18",
         "name": "Stepper controller type header",
         "order": 2,
         "width": 3,
@@ -7923,7 +7869,7 @@
         "id": "7534dfd9.8cf3e8",
         "type": "ui_template",
         "z": "1eaf21c8.f7a21e",
-        "group": "6be36295.0ab324",
+        "group": "cee2ca2f.3dfe18",
         "name": "Information",
         "order": 1,
         "width": 6,
@@ -8782,7 +8728,7 @@
         "label": "Focus Speed",
         "tooltip": "in µm/sec",
         "group": "fbd92986.1028c8",
-        "order": 5,
+        "order": 8,
         "width": 0,
         "height": 0,
         "passthru": true,
@@ -8830,7 +8776,7 @@
         "z": "bccd1f23.87219",
         "name": "",
         "group": "fbd92986.1028c8",
-        "order": 1,
+        "order": 2,
         "width": 3,
         "height": 1,
         "passthru": false,
@@ -8960,6 +8906,209 @@
             ]
         ]
     },
+    {
+        "id": "83c5a708.a5715",
+        "type": "exec",
+        "z": "9daf9e2b.019fc",
+        "command": "git --git-dir=/home/pi/PlanktonScope/.git describe --long --tags",
+        "addpay": false,
+        "append": "",
+        "useSpawn": "true",
+        "timer": "",
+        "oldrc": false,
+        "name": "Get git revision",
+        "x": 660,
+        "y": 340,
+        "wires": [
+            [
+                "af2b8d95.195bb8"
+            ],
+            [],
+            []
+        ]
+    },
+    {
+        "id": "d334d264.8a7728",
+        "type": "exec",
+        "z": "9daf9e2b.019fc",
+        "command": "git --git-dir=/home/pi/PlanktonScope/.git branch --list",
+        "addpay": false,
+        "append": "",
+        "useSpawn": "false",
+        "timer": "",
+        "oldrc": false,
+        "name": "Get git branch",
+        "x": 660,
+        "y": 260,
+        "wires": [
+            [
+                "e5e8e66c.899588"
+            ],
+            [],
+            []
+        ]
+    },
+    {
+        "id": "e4342b66.72972",
+        "type": "ui_button",
+        "z": "9daf9e2b.019fc",
+        "name": "get git branch",
+        "group": "1be83144.4fe4bf",
+        "order": 3,
+        "width": 5,
+        "height": 1,
+        "passthru": false,
+        "label": "Update branch list",
+        "tooltip": "",
+        "color": "",
+        "bgcolor": "",
+        "icon": "mi-compare_arrows",
+        "payload": "",
+        "payloadType": "str",
+        "topic": "",
+        "x": 410,
+        "y": 260,
+        "wires": [
+            [
+                "d334d264.8a7728"
+            ]
+        ]
+    },
+    {
+        "id": "3f13b9f8.bac94e",
+        "type": "ui_dropdown",
+        "z": "9daf9e2b.019fc",
+        "name": "Git branch list",
+        "label": "Switch branch to",
+        "tooltip": "If you choose something, the code WILL be updated to that branch, don't touch if you don't know what you are doing!",
+        "place": "branch",
+        "group": "1be83144.4fe4bf",
+        "order": 4,
+        "width": 7,
+        "height": 1,
+        "passthru": false,
+        "multiple": false,
+        "options": [],
+        "payload": "",
+        "topic": "branch",
+        "x": 1160,
+        "y": 320,
+        "wires": [
+            [
+                "2d2ef1fd.40e6e6"
+            ]
+        ]
+    },
+    {
+        "id": "e5e8e66c.899588",
+        "type": "function",
+        "z": "9daf9e2b.019fc",
+        "name": "filter branch",
+        "func": "msg.options = msg.payload.trimEnd().split('\\n')\nmsg.payload = msg.options.find((str) => str.startsWith('*'));\nreturn msg;",
+        "outputs": 1,
+        "noerr": 0,
+        "initialize": "",
+        "finalize": "",
+        "x": 930,
+        "y": 260,
+        "wires": [
+            [
+                "3f13b9f8.bac94e"
+            ]
+        ]
+    },
+    {
+        "id": "c1fb03f7.e675f8",
+        "type": "inject",
+        "z": "9daf9e2b.019fc",
+        "name": "once",
+        "props": [
+            {
+                "p": "payload"
+            }
+        ],
+        "repeat": "",
+        "crontab": "",
+        "once": true,
+        "onceDelay": "",
+        "topic": "",
+        "payload": "start",
+        "payloadType": "str",
+        "x": 430,
+        "y": 300,
+        "wires": [
+            [
+                "d334d264.8a7728",
+                "83c5a708.a5715"
+            ]
+        ]
+    },
+    {
+        "id": "af2b8d95.195bb8",
+        "type": "ui_text",
+        "z": "9daf9e2b.019fc",
+        "group": "1be83144.4fe4bf",
+        "order": 2,
+        "width": 12,
+        "height": 1,
+        "name": "",
+        "label": "Current code version",
+        "format": "{{msg.payload}}",
+        "layout": "row-center",
+        "x": 860,
+        "y": 320,
+        "wires": []
+    },
+    {
+        "id": "5112444.5be803c",
+        "type": "ui_text",
+        "z": "1371dec5.76e671",
+        "group": "ce9e278.781eed8",
+        "order": 3,
+        "width": 0,
+        "height": 0,
+        "name": "[System Monitoring] version",
+        "label": "Software version",
+        "format": "{{msg.payload}}",
+        "layout": "row-spread",
+        "x": 800,
+        "y": 520,
+        "wires": []
+    },
+    {
+        "id": "16548734.7fe631",
+        "type": "function",
+        "z": "1371dec5.76e671",
+        "name": "store version",
+        "func": "msg.payload = \"PlanktoScope-\"+msg.payload.trim()\n\nglobal.set(\"acq_software\",msg.payload);\n\nreturn msg\n",
+        "outputs": 1,
+        "noerr": 0,
+        "initialize": "",
+        "finalize": "",
+        "x": 570,
+        "y": 520,
+        "wires": [
+            [
+                "5112444.5be803c"
+            ]
+        ]
+    },
+    {
+        "id": "be6bddd3.2004f",
+        "type": "link in",
+        "z": "1371dec5.76e671",
+        "name": "git version",
+        "links": [
+            "aa2dbb6.4cd9948"
+        ],
+        "x": 455,
+        "y": 520,
+        "wires": [
+            [
+                "16548734.7fe631"
+            ]
+        ]
+    },
     {
         "id": "3ea12061.ce62c",
         "type": "ui_list",
@@ -9138,210 +9287,25 @@
         "options": [
             {
                 "label": "Off",
-                "value": "off",
-                "valueType": "str",
+                "value": "0",
+                "valueType": "num",
                 "color": "#009933"
             },
             {
                 "label": "On",
-                "value": "on",
-                "valueType": "str",
+                "value": "1",
+                "valueType": "num",
                 "color": "#999999"
             }
         ],
-        "x": 310,
+        "x": 350,
         "y": 120,
         "wires": [
             [
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@@ -9664,61 +9628,11 @@
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         "z": "9daf9e2b.019fc",
         "name": "get git revision",
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-        "noerr": 0,
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@@ -10219,102 +10133,5 @@
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-        "enableField": "enable",
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-                "p": "led_output",
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-                "tot": "msg"
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-            {
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\ No newline at end of file