I have for a indication the running-time a counter with a trigger for minutes-puls after the job is finish, i like to reset this counter to zero (0) the prescription say, "Use msg.reset for reset the counter to 0." bu…
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## [Arduino blink example error](https://discourse.nodered.org/t/arduino-blink-example-error/1881)
Hi, I sketch the standard-firmata on my Arduino and after make blink node based on example I faced with this error: "TypeError: Cannot read property 'on' of null"
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## [Changing global variables](https://discourse.nodered.org/t/changing-global-variables/1872)
All, I am new on Node-Red, thus I am sorry if the question is too stupid. I used node-red to build a Chatbot app that uses "text to speech" (voice) capabilities. I have defined a global variable called "speechOnOff", an…
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## [Extracting data from Arduino](https://discourse.nodered.org/t/extracting-data-from-arduino/1870)
Hi everyone. I'm receiving date through serial from an Arduino. I'm receiving two values and now I'm trying to separate those two values into differente messages to use them in the dashboard. I've tried to follow https…
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## [formulagoogle excel form](https://discourse.nodered.org/t/formulagoogle-excel-form/1866)
I am using node network answering questions of the form but it does not let me send different answers. I have the problem that I can answer several questions but it only lets me select a msg.payload and I do not know ho…
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## [Trigger a mqtt subscription](https://discourse.nodered.org/t/trigger-a-mqtt-subscription/766)
I want to trigger with the telegram bot, a mqtt subscription to get a retained message. How can I do that?
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## [How could laptop get the signal from DS18B20](https://discourse.nodered.org/t/how-could-laptop-get-the-signal-from-ds18b20/1220)
Hello, I’m now doing my graduation project called concept for Home-automation with Node-RED. My professor asked me to make a Embedded system that can control the temperatur and the light in a single room. My problem is …
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## [How to creat a server wich i can connect to it from unity?](https://discourse.nodered.org/t/how-to-creat-a-server-wich-i-can-connect-to-it-from-unity/1828)
Iwanna send data to node red from unity so that i can control my robot. so i suggest to creat a node red server and connect to it form unity wich will be the client. have you got any idea ?
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## [Looking for integration info with a c# application to run scripts](https://discourse.nodered.org/t/looking-for-integration-info-with-a-c-application-to-run-scripts/1844)
I'm looking at the possibility of launching this from a C#.net application to script in-application automation instead of doing something like LUA. The script capabilities are very simplistic custom methods, but I would…
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## [Secure access to Node-RED using Cloudflare](https://discourse.nodered.org/t/secure-access-to-node-red-using-cloudflare/1837)
Just noticed that Cloudflare now has a new service called "Access". This lets you apply a login layer using Cloudflare's servers rather than your own. It is actually free for 5 users - that's not all that clear from the…
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## [Copying message paths/content not available](https://discourse.nodered.org/t/copying-message-paths-content-not-available/1841)
I cannot find a setting to allow this functionality to work. When I mouse over an array variable in debug for instance there is not option that becomes available to copying message paths/content. I have tried this in IE …
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## ["TypeError: Cannot create property '\_msgid' on string](https://discourse.nodered.org/t/typeerror-cannot-create-property-msgid-on-string/1817)
Sorry but I am very new to Node Red and struggling a bit. I got the above error on a function node trying to store an IP address to a variable. I am using a text node to capture the IP address from the user on my dashboa…
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## [Issue Exec Node](https://discourse.nodered.org/t/issue-exec-node/1833)
Hi! I am using an Exec node to run a python script, this python script has a while that doesn't stop (This while get data from a car), but node-red doens't show data before the loop are finish o/ I am using the option:…
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## [Node-Red Starts on RPi3+ but not on RPi Zero W](https://discourse.nodered.org/t/node-red-starts-on-rpi3-but-not-on-rpi-zero-w/1838)
Hello - I've been developing my node-red flows an a RPi3+ with great success, but have recently had to change hardware to reduce power consumption. When I swap my SD card to a Raspberry Pi Zero W node-red fails to start …
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## [Can't give a string contains '.' as ths category name for nodes](https://discourse.nodered.org/t/cant-give-a-string-contains-as-ths-category-name-for-nodes/1836)
Hi, Can't I give a string contains '.' for the category of a node? I tried following but not worked. Is the a default behavior. RED.nodes.registerType('myNode'),{ category: 'my.custom.category',
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## [Changing message properties](https://discourse.nodered.org/t/changing-message-properties/1805)
Hi! I have an exec node that run a python script, my python script has a while structure that sends several data once every 1 second, and the payload message that I receive isn't the same, and the payload name property …
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## [How to chart/graph from stored text files to the chart](https://discourse.nodered.org/t/how-to-chart-graph-from-stored-text-files-to-the-chart/1803)
I have tried searching but the results are more for real time display on the chart rather than from an existing file. So, I have a heap of files that have temperature readings from multiple devices that I want to chart. …
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## [Control Tx/Rx pin with another GPIO pin / sensor](https://discourse.nodered.org/t/control-tx-rx-pin-with-another-gpio-pin-sensor/1794)
Hello, I am a newbie on raspberry pi. I want to ask about controling Tx/Rx pin using another pin. I want make a project to control Rx pin with ultrasonic sensor. The propose system like this, if the distace \> 30 cm, the …
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## [stepper control mqtt](https://discourse.nodered.org/t/stepper-control-mqtt/1792)
i want to program a node mcu connected to mqtt and stepper motor 28byj-48 uln 2003 with arduino ide and control it with a slider bar from node-red dashboard To control the curtain of the room so that the slider is betwe…
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## [Influxdb not accepting Json string time format](https://discourse.nodered.org/t/influxdb-not-accepting-json-string-time-format/1323)
I’ve created the following inject node into node-red but its not liking the date, its says “Error: A 400 Bad Request error occurred: {“error”:“unable to parse ‘Equipment1,MachineType=Type1 pressure=5.5 1530722335.98’: ba…
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## [Global numeric array trouble using global get and set](https://discourse.nodered.org/t/global-numeric-array-trouble-using-global-get-and-set/1732)
Can someone help? I need a simple array humidityArray with 24 values. Every hour I would move offset 22 value into offset 23, 21 into 22 etc.... and put latest value into offset zero... so I would always be able tot tota…
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## [Node-Red on Bluemix: Installing node-red-contrib-cep](https://discourse.nodered.org/t/node-red-on-bluemix-installing-node-red-contrib-cep/1785)
I am new to both Node-Red as well as Bluemix. I have created a Node-Red running on Bluemix using the Bluemix IoT Platform starter kit. I have tried to install node-red-contrib-cep using the Manage Palette -\> Install but…
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## [I have a nice flow I would like to share](https://discourse.nodered.org/t/i-have-a-nice-flow-i-would-like-to-share/1784)
Yes, I know. Read the message on all the pages about adding a new NODE. (In light of the library state.) This is a flow. It isn't anything "special" but it may be nice for others to use on a Dashboard when they are w…
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## [Beginner needs help](https://discourse.nodered.org/t/beginner-needs-help/1775)
Hello, i'm just starting on nodered and I have a problem. I'm creating a custom node but can't get the js file to work. In my html file i have this : \
I NEARLY posted a question earlier but sat down, and sort of nutted it out. But..... I'm ba-ack with a problem I am seeming to be missing. Going on from the msg.(what ever) is modified via MQTT to basically msg.paylo…
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## [JSON{} node question](https://discourse.nodered.org/t/json-node-question/1767)
Ok, I'm going to cop it for asking, but here goes anyway. Ok, if I have a "message" and want to send it via MQTT, only the payload and topic are sent. So I have to move things from what ever they are to the payload to …
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## [Multiple raspberry pi dashboard](https://discourse.nodered.org/t/multiple-raspberry-pi-dashboard/1672)
I have three raspberry pi's, all of which have their own dashboard. Node red is installed on each individual pi, but is it possible to have one dashboard which shows the data from all three raspberry pi's? All are on the…
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## [Control device via application](https://discourse.nodered.org/t/control-device-via-application/1762)
Hi everybody, I'm so beginner and sorry for this primary question. I have an Arduino based device which is connected to internet and i will to send an On/Off command to this device by an android app. How I can use this …
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## [Code question from a dopey newbe\[solved\]](https://discourse.nodered.org/t/code-question-from-a-dopey-newbe-solved/1742)
Hello, I am setting up a flow for automating my greenhouse using a pi 3. I have some prior experience coding in Qt c++ but it has been a few years... I want to return 'true' or 'false' to operate a switch but due to m…
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