Node-RED

Well, I'm back again, because it broke again ... and I fixed it somehow again. I was playing around with my sensor to get it up and running the way I want it to and resetted its node id. It couldn't get a new node ID and I was back where I was yesterday. Deleted everything, rebuild the complete flow, restarted everything. Nothing helped. So I added debug messages everywhere and also had a look into the raw Serial protocol here: https://www.mysensors.org/download/serial_api_20 It looks like you don't need the encode and decode, at least for me the encode after myscontroller totally destroyed the payload. Why did it work yesterday? I have no idea. The payload looked fine now without the decode and encode according to the protocol, but it still didn't work. I noticed that the incoming TCP payload always ended with a linefeed "\n", so I added a custom function between the myscontroller and tcp output to also add a linefeed to the outgoing payload and it's working again.

@tbowmo said in node-red-contrib-mysensors release thread: e-assistant and their spe Thanks a lot @tbowmo Denis

You're welcome! I've used node red like you are doing for some times and it works well. Since around 1-2 years I'm using home assistant as controller, and node red for the logic in automations. Home assistant makes life much easier, as it for example takes care of filling data into influxdb automatically 👍

This seems to evaluate to true/undefined every time, effectively resetting the array: var global_individual_data=global.get("global_invidual_data"); if (global_individual_data===undefined) { msg.kein_array_vorhanden="true" global_individual_data=[]; } even though it's later set with global.set("global_individual_data",global_individual_data);

@SuperNinja I'm afraid I didn't keep it. On the other hand, linking actuators to sensors was (and still is) very straightforward. Most flows dealt with voice recognition, which has become a lot easier to implement nowadays.

I reply to myself, I succeeded to make it work. The \n was missing in the payload before sending it back to the gateway. This took me months to see this... :D Works like a charm now, I just need to implement the inclusion feature in NodeRED.

Seems that the problem was that influxdb always configures the field type the first time a series is accessed. I thought that the value was something like a "variant" and would eat anything I throw at it. So when I altered the data types in the flow, the db refused to save. A drop and re create solved the problem.

Hi @sotiriszegiannis, welcome to the MySensors community! By gateway, do you mean a MySensors gateway, or something else? I am not familiar with the term ”node red gateway”. There can be multiple MySensors gateways on the same lan. There can be multiple Node Red installations on the same lan.

@pansen FYI, I just released a small bug fix for the mysensors node-red module.. So now it should show the correct node ID's in the controller view.

I'm using a mqtt gateway to send data to the nodes. It is possible you will run into the same issues I guess but that should be easy to test. Just send data on a regular basis to the out node and try to receive at the same time. I use the VAR_1 type in the message of I'm sending data from node red to a node

@wergeld Odd, I went to the raw file, hit select all in Firefox and right click copy, then went to Node Red and did the import from clipboard, no edits. Maybe it's something related to Windows, I did mine through Debian. Still, good to know that some paths need the single/double quotes repaired so thank you.

Thank you @David-Muller

@kduino you should go to "Manage palette" and search for mysensors. From there install node-red-contrib-mysensors or you could run npm install node-red-contrib-mysensors

@david-barber Thanks for the update. I'll add a note to the documentation, about minimum requirements.

I have the wireless gateway and Mosquitto running and now I can see the temperature readings coming into node-RED, nicely decoded through mysdecode. Thanks everyone for these amazing frameworks!

It is possible to create a GUI in node-red, using node-red-dashboard packages. This is what my main page looks like at the moment. [image: 1523258856931-2018-04-09_09-26-35-resized.png]

@tbowmo Thank you! I am needing the inspiration! :)

As an example, of using the mysensors nodes, here is my current "main" flow, converting mysensors serial protocol to / from MQTT.. The goal is to switch domoticz to run with mqtt at some point in time, and then skip the domoticz <-> mqtt transformation steps. Or even skip domoticz completely, as I only use it for some automation scripts in LUA. All graphing etc. is handled by influxdb / grafana instead. But right now I am leaving domoticz untouched to keep the WAF as high as possible :) [ { "id": "2257718.fdda88e", "type": "subflow", "name": "Energy meter", "info": "Converts input from arduino sketch, to a \nMysensors compatible protocol format, usable\nfor injecting into the message stream from\nnormal Mysensors nodes\n\nOutputs data as nodeId 99.", "in": [], "out": [ { "x": 1320, "y": 220, "wires": [ { "id": "11f1e54.721221b", "port": 0 }, { "id": "f9b89df5.06476", "port": 0 }, { "id": "1dcfb48.fe2304c", "port": 0 }, { "id": "f8477377.66ad", "port": 0 }, { "id": "985078ce.c384e8", "port": 0 } ] } ] }, { "id": "12db17ce.ed24e8", "type": "serial in", "z": "2257718.fdda88e", "name": "Meter input", "serial": "acfe3226.5301d", "x": 160, "y": 200, "wires": [ [ "e56f30b7.1a90d" ] ] }, { "id": "1dcfb48.fe2304c", "type": "mysencap", "z": "2257718.fdda88e", "name": "", "nodeid": "99", "childid": "1", "subtype": "17", "internal": "0", "ack": false, "msgtype": "1", "presentation": false, "presentationtype": "13", "presentationtext": "Watt", "fullpresentation": false, "firmwarename": "", "firmwareversion": "", "x": 620, "y": 160, "wires": [ [] ] }, { "id": "f9b89df5.06476", "type": "mysencap", "z": "2257718.fdda88e", "name": "V_KWH node 99", "nodeid": "99", "childid": "1", "subtype": "18", "internal": "0", "ack": false, "msgtype": "1", "presentation": true, "presentationtype": "13", "presentationtext": "Kwh", "fullpresentation": true, "firmwarename": "MeterNode", "firmwareversion": "0.1", "x": 570, "y": 200, "wires": [ [] ] }, { "id": "e56f30b7.1a90d", "type": "function", "z": "2257718.fdda88e", "name": "Split meter data", "func": "var m=msg.payload.split(';');\n// Filtering away unrealistic high usage above 50KW\nif (Number(m[0]) < 50000) {\n var msg1 = {payload:m[0]};\n var msg2 = {payload:m[1]/1000};\n var msg3 = {payload:m[1]};\n return [msg1, msg2, msg3];\n}\n", "outputs": "3", "noerr": 0, "x": 340, "y": 200, "wires": [ [ "1dcfb48.fe2304c" ], [ "f9b89df5.06476" ], [ "dfd92894.2026d8", "11f1e54.721221b" ] ] }, { "id": "dfd92894.2026d8", "type": "file", "z": "2257718.fdda88e", "name": "meter counter output to file", "filename": "/var/tmp/meascache.txt", "appendNewline": true, "createDir": false, "overwriteFile": "true", "x": 480, "y": 300, "wires": [] }, { "id": "11f1e54.721221b", "type": "mysencap", "z": "2257718.fdda88e", "name": "", "nodeid": "99", "childid": "10", "subtype": "24", "internal": 0, "ack": false, "msgtype": "1", "presentation": false, "presentationtype": 0, "presentationtext": "", "fullpresentation": false, "firmwarename": "", "firmwareversion": "", "x": 630, "y": 240, "wires": [ [ "985078ce.c384e8" ] ] }, { "id": "985078ce.c384e8", "type": "function", "z": "2257718.fdda88e", "name": "Watt/Hour calculator", "func": "/* Takes input on subType 24, calculates difference\n from last time, if around 60 seconds have passed\n since last report.\n It passes the value on as subType 17, and\n childSensorId 2 */\n \nif ((Number(msg.subType)===24) && (Number(msg.nodeId)===99)) {\n var uTime = Math.floor(Date.now()/60000);\n var lastTime = context.get('lastTime')||0;\n if (lastTime === 0) {\n context.set('lastTime', uTime);\n context.set('lastCount', Number(msg.payload));\n } else {\n if (uTime != lastTime) {\n lastCount = context.get('lastCount');\n currentCount = Number(msg.payload);\n context.set('lastTime', uTime);\n context.set('lastCount', currentCount)\n msg.subType = 17;\n msg.childSensorId = \"2\";\n msg.payload = currentCount - lastCount;\n return msg;\n }\n }\n}", "outputs": 1, "noerr": 0, "x": 920, "y": 280, "wires": [ [ "693564ba.928f4c" ] ] }, { "id": "f8477377.66ad", "type": "change", "z": "2257718.fdda88e", "name": "", "rules": [ { "t": "set", "p": "payload", "pt": "msg", "to": "payload[0].sum", "tot": "msg" }, { "t": "set", "p": "subType", "pt": "msg", "to": "25", "tot": "num" } ], "action": "", "property": "", "from": "", "to": "", "reg": false, "x": 1200, "y": 40, "wires": [ [] ] }, { "id": "693564ba.928f4c", "type": "function", "z": "2257718.fdda88e", "name": "create query", "func": "if (msg.nodeId == 99 & msg.subType==17) {\nvar d = new Date();\nd.setHours(0,0,0,0);\nmsg.time = (1 * d.getTime())/1000;\nmsg.time = d.toISOString(); //ISODateString(d);\nmsg.query = \"select sum(value) from electricity where node='99' and sensor='2' and time>'\"+msg.time+\"'\"; //+msg.time;\nreturn msg;\n}\n", "outputs": 1, "noerr": 0, "x": 850, "y": 40, "wires": [ [ "fe2ccdc0.ecce8" ] ] }, { "id": "fe2ccdc0.ecce8", "type": "influxdb in", "z": "2257718.fdda88e", "influxdb": "9d8c74dc.570ca8", "name": "influx lookup", "query": "", "rawOutput": false, "precision": "", "retentionPolicy": "", "x": 1030, "y": 40, "wires": [ [ "f8477377.66ad" ] ] }, { "id": "acfe3226.5301d", "type": "serial-port", "z": "", "serialport": "/dev/ttyUTILITY", "serialbaud": "115200", "databits": "8", "parity": "none", "stopbits": "1", "newline": "\\n", "bin": "false", "out": "char", "addchar": true }, { "id": "9d8c74dc.570ca8", "type": "influxdb", "z": "", "hostname": "influxdb", "port": "8086", "protocol": "http", "database": "utility", "name": "", "usetls": false, "tls": "" }, { "id": "9b272654.9ad688", "type": "subflow", "name": "Influx processing", "info": "", "in": [ { "x": 220, "y": 280, "wires": [ { "id": "55204322.aadfbc" } ] } ], "out": [ { "x": 580, "y": 240, "wires": [ { "id": "55204322.aadfbc", "port": 2 } ] } ] }, { "id": "55204322.aadfbc", "type": "function", "z": "9b272654.9ad688", "name": "Influx conditioner", "func": "msg_env = null;\nmsg_utility = null;\nmsg_debug = null;\nst = msg.subType;\nif (msg.messageType == 1 && (st === 0 || st == 1 || st == 2 || st == 4 || st == 17)) {\n var tags = {};var data = {}\n tags.node = msg.nodeId.toString();\n tags.sensor = msg.childSensorId.toString();\n data.value=parseFloat(msg.payload);\n switch (st) {\n case 0 : type = \"temperature\";break;\n case 1 : type = \"humidity\"; break;\n case 2 : type = \"status\"; break;\n case 4 : type = \"barometer\"; break;\n case 17: type = \"electricity\"; break;\n }\n msg.payload = [data, tags];\n msg.measurement = type;\n msg_debug = msg;\n if (msg.subType==17) \n msg_utility = msg;\n else \n msg_env = msg;\n} \nelse \n msg = null;\nreturn [msg_debug, msg_env, msg_utility];", "outputs": "3", "noerr": 0, "x": 410, "y": 280, "wires": [ [], [ "c042117a.3fbdf" ], [ "f6bdc7dc.77c758" ] ] }, { "id": "c042117a.3fbdf", "type": "influxdb out", "z": "9b272654.9ad688", "influxdb": "a2b7673f.603a98", "name": "", "measurement": "", "precision": "", "retentionPolicy": "", "x": 630, "y": 280, "wires": [] }, { "id": "f6bdc7dc.77c758", "type": "influxdb out", "z": "9b272654.9ad688", "influxdb": "c4892f23.817cc", "name": "Utility", "measurement": "", "precision": "", "retentionPolicy": "", "x": 610, "y": 320, "wires": [] }, { "id": "a2b7673f.603a98", "type": "influxdb", "z": "9b272654.9ad688", "hostname": "influxdb", "port": "8086", "protocol": "http", "database": "environment", "name": "environment", "usetls": false, "tls": "" }, { "id": "c4892f23.817cc", "type": "influxdb", "z": "9b272654.9ad688", "hostname": "influxdb", "port": "8086", "protocol": "http", "database": "utility", "name": "utility", "usetls": false, "tls": "" }, { "id": "4c13992e.b3ec68", "type": "subflow", "name": "Logging filter", "in": [ { "x": 105.5, "y": 240, "wires": [ { "id": "b57b1f3.f4a84e" } ] } ], "out": [ { "x": 600, "y": 260, "wires": [ { "id": "b57b1f3.f4a84e", "port": 1 } ] } ] }, { "id": "b57b1f3.f4a84e", "type": "function", "z": "4c13992e.b3ec68", "name": "Filter battery msg", "func": "var battMsg = null;\nvar debugMsg = null;\nvar sketchMsg = null;\nif (msg.messageType==3) {\n if (msg.subType===0)\n battMsg = msg;\n if (msg.subType==9)\n debugMsg = msg;\n if (msg.subType==11 || msg.subType==12)\n sketchMsg = msg;\n}\n\nreturn [battMsg, debugMsg, sketchMsg];", "outputs": "3", "noerr": 0, "x": 430, "y": 240, "wires": [ [ "d8b91167.2746f", "de0acbaf.dce4e8" ], [], [ "cdd7f2cc.7bf58" ] ] }, { "id": "38f9ab87.c70654", "type": "file", "z": "4c13992e.b3ec68", "name": "Battery log", "filename": "/var/tmp/battlog.txt", "appendNewline": false, "createDir": false, "overwriteFile": "false", "x": 1050, "y": 180, "wires": [] }, { "id": "1b4decbb.e4b213", "type": "function", "z": "4c13992e.b3ec68", "name": "inject date", "func": "var date = new Date();\nvar str = date.getFullYear() + \"-\" + (date.getMonth() + 1) + \"-\" + date.getDate() + \" \" + date.getHours() + \":\" + date.getMinutes() + \":\" + date.getSeconds();\nmsg.payload = str + \" - \" + msg.payload;\nreturn msg;", "outputs": 1, "noerr": 0, "x": 830, "y": 180, "wires": [ [ "38f9ab87.c70654" ] ] }, { "id": "d8b91167.2746f", "type": "function", "z": "4c13992e.b3ec68", "name": "Check batt level", "func": "var date = new Date();\nvar str = date.getFullYear() + \"-\" + (date.getMonth() + 1) + \"-\" + date.getDate() + \" \" + date.getHours() + \":\" + date.getMinutes() + \":\" + date.getSeconds();\nmsg.date = str;\nif (parseInt(msg.payload)<5)\nreturn msg;", "outputs": 1, "noerr": 0, "x": 660, "y": 220, "wires": [ [ "c44e1c28.3bb1e" ] ] }, { "id": "c44e1c28.3bb1e", "type": "template", "z": "4c13992e.b3ec68", "name": "BatLow message", "field": "payload", "fieldType": "msg", "format": "handlebars", "syntax": "mustache", "template": "{{date}} - Battery level is low on node {{nodeId}} : {{payload}} !", "x": 850, "y": 220, "wires": [ [ "e9231639.16dce8" ] ] }, { "id": "e9231639.16dce8", "type": "twitter out", "z": "4c13992e.b3ec68", "twitter": "", "name": "Tweet", "x": 1030, "y": 220, "wires": [] }, { "id": "b478903e.4b877", "type": "file", "z": "4c13992e.b3ec68", "name": "Presentation log", "filename": "/var/tmp/presentation.txt", "appendNewline": true, "createDir": false, "overwriteFile": "false", "x": 840, "y": 300, "wires": [] }, { "id": "de0acbaf.dce4e8", "type": "mysencode", "z": "4c13992e.b3ec68", "name": "", "mqtt": false, "x": 600, "y": 120, "wires": [ [ "1b4decbb.e4b213" ] ] }, { "id": "cdd7f2cc.7bf58", "type": "mysencode", "z": "4c13992e.b3ec68", "name": "", "mqtt": false, "x": 630, "y": 360, "wires": [ [ "b478903e.4b877" ] ] }, { "id": "bed2e35d.412d2", "type": "subflow", "name": "Domoticz conditioner", "info": "Inverts lockstate for domoticz, as domoticz has inverted the logic in their code, compared to mysensors", "in": [ { "x": 280, "y": 220, "wires": [ { "id": "177ebcf6.1ef483" } ] } ], "out": [ { "x": 1000, "y": 220, "wires": [ { "id": "133a4a4e.e07f06", "port": 0 } ] } ] }, { "id": "126152bf.ed9ead", "type": "function", "z": "bed2e35d.412d2", "name": "Invert lockstate for domoticz", "func": "if (msg.subType == 36) {\n if (msg.payload== \"1\") msg.payload=\"0\";\n else msg.payload=\"1\";\n}\nreturn msg;", "outputs": 1, "noerr": 0, "x": 640, "y": 220, "wires": [ [ "133a4a4e.e07f06" ] ] }, { "id": "177ebcf6.1ef483", "type": "mysdecode", "z": "bed2e35d.412d2", "name": "", "mqtt": false, "x": 400, "y": 280, "wires": [ [ "126152bf.ed9ead" ] ] }, { "id": "133a4a4e.e07f06", "type": "mysencode", "z": "bed2e35d.412d2", "name": "", "mqtt": false, "x": 860, "y": 340, "wires": [ [] ] }, { "id": "67deb464.98214c", "type": "tab", "label": "Mysensors", "disabled": false, "info": "" }, { "id": "5b8bba4c.a47444", "type": "serial in", "z": "67deb464.98214c", "name": "Mysensors NRF", "serial": "821a7286.7de59", "x": 200, "y": 280, "wires": [ [ "8cb827f.b90b8d8", "25982c9c.c32ed4" ] ] }, { "id": "47b5936e.b84a6c", "type": "serial out", "z": "67deb464.98214c", "name": "Mysensors NRF", "serial": "821a7286.7de59", "x": 1000, "y": 160, "wires": [] }, { "id": "4755dfb8.b8aa2", "type": "serial out", "z": "67deb464.98214c", "name": "Domoticz", "serial": "b5105521.4aefa8", "x": 1040, "y": 580, "wires": [] }, { "id": "44592b43.bba6d4", "type": "debug", "z": "67deb464.98214c", "name": "Energy meter output", "active": false, "console": "false", "complete": "true", "x": 720, "y": 340, "wires": [] }, { "id": "9e471178.61b8f", "type": "subflow:bed2e35d.412d2", "z": "67deb464.98214c", "name": "", "x": 420, "y": 680, "wires": [ [ "173aba02.e8c546", "19c64177.e1a11f" ] ] }, { "id": "9bdc2a5b.6423d8", "type": "subflow:bed2e35d.412d2", "z": "67deb464.98214c", "name": "Domoticz out", "x": 850, "y": 580, "wires": [ [ "4755dfb8.b8aa2", "7acdfaa3.794f44" ] ] }, { "id": "9ebb1391.6144f", "type": "debug", "z": "67deb464.98214c", "name": "gw debug", "active": false, "console": "false", "complete": "true", "x": 840, "y": 540, "wires": [] }, { "id": "49c6c17b.b6394", "type": "subflow:4c13992e.b3ec68", "z": "67deb464.98214c", "x": 630, "y": 540, "wires": [ [ "9ebb1391.6144f" ] ] }, { "id": "602db35f.9fd24c", "type": "serial in", "z": "67deb464.98214c", "name": "Domoticz (20)", "serial": "b5105521.4aefa8", "x": 190, "y": 680, "wires": [ [ "9e471178.61b8f" ] ] }, { "id": "173aba02.e8c546", "type": "debug", "z": "67deb464.98214c", "name": "Domoticz in", "active": false, "console": "false", "complete": "payload", "x": 630, "y": 640, "wires": [] }, { "id": "3ff64036.ae116", "type": "subflow:9b272654.9ad688", "z": "67deb464.98214c", "name": "InfluxDB", "x": 620, "y": 500, "wires": [ [ "aec232d3.2860b" ] ] }, { "id": "aec232d3.2860b", "type": "debug", "z": "67deb464.98214c", "name": "", "active": false, "console": "false", "complete": "true", "x": 830, "y": 500, "wires": [] }, { "id": "932ebb67.4968d8", "type": "debug", "z": "67deb464.98214c", "name": "msg_nrf", "active": false, "console": "false", "complete": "payload", "x": 980, "y": 120, "wires": [] }, { "id": "8cb827f.b90b8d8", "type": "debug", "z": "67deb464.98214c", "name": "NRF input", "active": false, "console": "false", "complete": "payload", "x": 420, "y": 240, "wires": [] }, { "id": "ea57b38e.eecb5", "type": "debug", "z": "67deb464.98214c", "name": "", "active": false, "console": "false", "complete": "true", "x": 670, "y": 260, "wires": [] }, { "id": "a3d33992.a66ae8", "type": "debug", "z": "67deb464.98214c", "name": "", "active": false, "console": "false", "complete": "true", "x": 670, "y": 120, "wires": [] }, { "id": "7acdfaa3.794f44", "type": "debug", "z": "67deb464.98214c", "name": "", "active": false, "console": "false", "complete": "false", "x": 1050, "y": 540, "wires": [] }, { "id": "cf80a3d0.be573", "type": "mqtt out", "z": "67deb464.98214c", "name": "mys-out", "topic": "", "qos": "2", "retain": "false", "broker": "4798f2b0.5d747c", "x": 980, "y": 300, "wires": [] }, { "id": "895c5ec3.769fc", "type": "mqtt in", "z": "67deb464.98214c", "name": "", "topic": "mys-out/#", "qos": "2", "broker": "4798f2b0.5d747c", "x": 180, "y": 160, "wires": [ [ "ed4c6e39.bacbd", "c11a5ff7.4e5f1" ] ] }, { "id": "7ec6243f.89990c", "type": "mqtt in", "z": "67deb464.98214c", "name": "", "topic": "mys-in/#", "qos": "2", "broker": "4798f2b0.5d747c", "x": 180, "y": 540, "wires": [ [ "f11a2832.07d9d8" ] ] }, { "id": "a4e0701b.c1765", "type": "debug", "z": "67deb464.98214c", "name": "MQTT out", "active": false, "tosidebar": true, "console": false, "tostatus": false, "complete": "true", "x": 980, "y": 260, "wires": [] }, { "id": "ff440b2.89fc2f8", "type": "subflow:2257718.fdda88e", "z": "67deb464.98214c", "x": 430, "y": 320, "wires": [ [ "44592b43.bba6d4", "7535eff3.37e22" ] ] }, { "id": "25982c9c.c32ed4", "type": "mysdecode", "z": "67deb464.98214c", "name": "", "mqtt": false, "x": 450, "y": 280, "wires": [ [ "ea57b38e.eecb5", "7535eff3.37e22" ] ] }, { "id": "f11a2832.07d9d8", "type": "mysdecode", "z": "67deb464.98214c", "name": "", "mqtt": true, "x": 370, "y": 540, "wires": [ [ "3ff64036.ae116", "49c6c17b.b6394", "8d2cee61.71c6c" ] ] }, { "id": "8d2cee61.71c6c", "type": "mysencode", "z": "67deb464.98214c", "name": "", "mqtt": false, "x": 650, "y": 580, "wires": [ [ "9bdc2a5b.6423d8" ] ] }, { "id": "7535eff3.37e22", "type": "mysencode", "z": "67deb464.98214c", "name": "", "mqtt": true, "mqtttopic": "mys-in", "x": 730, "y": 300, "wires": [ [ "a4e0701b.c1765", "cf80a3d0.be573" ] ] }, { "id": "19c64177.e1a11f", "type": "mysdecode", "z": "67deb464.98214c", "name": "", "mqtt": false, "x": 650, "y": 680, "wires": [ [ "eaa9d1f0.25429" ] ] }, { "id": "ed4c6e39.bacbd", "type": "mysdecode", "z": "67deb464.98214c", "name": "", "mqtt": true, "x": 440, "y": 160, "wires": [ [ "a3d33992.a66ae8", "1d6e96fd.d27aa9" ] ] }, { "id": "1d6e96fd.d27aa9", "type": "mysencode", "z": "67deb464.98214c", "name": "", "mqtt": false, "x": 710, "y": 160, "wires": [ [ "932ebb67.4968d8", "47b5936e.b84a6c" ] ] }, { "id": "7e24cbb9.731f94", "type": "mqtt out", "z": "67deb464.98214c", "name": "", "topic": "", "qos": "2", "retain": "false", "broker": "4798f2b0.5d747c", "x": 1090, "y": 680, "wires": [] }, { "id": "eaa9d1f0.25429", "type": "mysencode", "z": "67deb464.98214c", "name": "", "mqtt": true, "mqtttopic": "mys-out", "x": 890, "y": 680, "wires": [ [ "7e24cbb9.731f94" ] ] }, { "id": "c11a5ff7.4e5f1", "type": "debug", "z": "67deb464.98214c", "name": "", "active": false, "tosidebar": true, "console": false, "tostatus": false, "complete": "topic", "x": 420, "y": 120, "wires": [] }, { "id": "290b0786.992e48", "type": "comment", "z": "67deb464.98214c", "name": "Mysensors Serial <-> MQTT transformation", "info": "", "x": 680, "y": 60, "wires": [] }, { "id": "49126190.1d732", "type": "comment", "z": "67deb464.98214c", "name": "Domoticz (mysensors) <-> MQTT transformation", "info": "", "x": 700, "y": 460, "wires": [] }, { "id": "821a7286.7de59", "type": "serial-port", "z": "", "serialport": "/dev/ttyNRF24", "serialbaud": "115200", "databits": "8", "parity": "none", "stopbits": "1", "newline": "\\n", "bin": "false", "out": "char", "addchar": true }, { "id": "b5105521.4aefa8", "type": "serial-port", "serialport": "/dev/ttyS80", "serialbaud": "115200", "databits": "8", "parity": "none", "stopbits": "1", "newline": "\\n", "bin": "false", "out": "char", "addchar": true }, { "id": "4798f2b0.5d747c", "type": "mqtt-broker", "z": "", "broker": "mosquitto", "port": "1883", "clientid": "nodered-mysensors", "usetls": false, "compatmode": true, "keepalive": "60", "cleansession": true, "willTopic": "", "willQos": "0", "willPayload": "", "birthTopic": "", "birthQos": "0", "birthPayload": "" } ]

here is my solution; add a new udev rules file for permissions: sudoedit /etc/udev/rules.d/50-usb-permissions.rules paste the following in our new rules file: (it gives all permission to any USB* and ACM* devices) KERNEL=="ttyUSB[0-9]*",MODE="0666" KERNEL=="ttyACM[0-9]*",MODE="0666" that's it. this will give you all the permissions to all usb devices on every boot. also you can reload udev instead of rebooting. udevadm control --reload-rules *** please note that this gives permissions to all USB* and ACM* devices. if you're concerned about security you can add the following so that only the mentioned device will be accessable: ATTRS{idVendor}=="XXXX", ATTRS{idProduct}=="YYYY" for example, in my case (output from dmesg): [ 2654.037338] usb 1-1: New USB device found, idVendor=1a86, idProduct=7523 [ 2654.037344] usb 1-1: New USB device strings: Mfr=0, Product=2, SerialNumber=0 [ 2654.037347] usb 1-1: Product: USB2.0-Serial [ 2654.038531] usb 1-1: ch341-uart converter now attached to ttyUSB0 so, for me it's: ATTRS{idVendor}=="1a86", ATTRS{idProduct}=="7523"