# General **URL:** https://discourse.nodered.org/c/general/7.md?page=816 [Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md) **Page:** 817 --- ## [OpenPLC install error](https://discourse.nodered.org/t/openplc-install-error/15635)
**Author:** [@Norrox](https://discourse.nodered.org/u/Norrox)\ **Replies:** 11\ **Last updated:** [16 December 2019 09:18 UTC](https://discourse.nodered.org/t/openplc-install-error/15635 "2019-12-16T09:18:25Z")
Hello guys, i get this error when i try to install openplc for node-red https://pastebin.com/dTCnDrNA --- ## [Which timer node do I need?](https://discourse.nodered.org/t/which-timer-node-do-i-need/19217)
**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\ **Replies:** 0\ **Last updated:** [16 December 2019 07:29 UTC](https://discourse.nodered.org/t/which-timer-node-do-i-need/19217 "2019-12-16T07:29:18Z")
I need a node: To detect daylight savings start/end, and send a message. Sorry brain is a bit dead at this point in time. --- ## [Linkable comment nodes](https://discourse.nodered.org/t/linkable-comment-nodes/19206)
**Author:** [@Waz](https://discourse.nodered.org/u/Waz)\ **Replies:** 3\ **Last updated:** [16 December 2019 00:17 UTC](https://discourse.nodered.org/t/linkable-comment-nodes/19206 "2019-12-16T00:17:48Z")
It would be great to be able to link comment nodes with arrows to create a flow chart. At the moment I'm doing my system designs in Google drawings, it would be a perfect solution for me to be able to dedicate the first… --- ## [Mustache Template Buffer Out](https://discourse.nodered.org/t/mustache-template-buffer-out/19196)
**Author:** [@gilad](https://discourse.nodered.org/u/gilad)\ **Replies:** 3\ **Last updated:** [15 December 2019 21:02 UTC](https://discourse.nodered.org/t/mustache-template-buffer-out/19196 "2019-12-15T21:02:30Z")
Hi all, I'm using an HTML code through mustache template node, as below: The Idea is to get a "true" and complete buffer output in the first "1-string buffer" debug node, as in the second debug node "2-Buffer". The… --- ## [How to play audio file or tts on analog audio out of rapi?](https://discourse.nodered.org/t/how-to-play-audio-file-or-tts-on-analog-audio-out-of-rapi/15622)
**Author:** [@WhiteLion](https://discourse.nodered.org/u/WhiteLion)\ **Replies:** 20\ **Last updated:** [15 December 2019 19:27 UTC](https://discourse.nodered.org/t/how-to-play-audio-file-or-tts-on-analog-audio-out-of-rapi/15622 "2019-12-15T19:27:59Z")
Node RED runs on my raspi and I want to use the dashboard to play audio files / tts / streams by using the analog output of the raspi and not on the device where the dashboard is running. I could not find nodes for that … --- ## [Generate retain variables using global.set/get](https://discourse.nodered.org/t/generate-retain-variables-using-global-set-get/19183)
**Author:** [@easyE4](https://discourse.nodered.org/u/easyE4)\ **Replies:** 11\ **Last updated:** [15 December 2019 18:27 UTC](https://discourse.nodered.org/t/generate-retain-variables-using-global-set-get/19183 "2019-12-15T18:27:29Z")
Hi guys, two variables that I enter in a form on the dashboard, should retain their values even after restarting node-red. It's not working in my project, so I will show you what I have done and hope you can give me a s… --- ## [Trigger send sms node Nexmo, when GPIO changes](https://discourse.nodered.org/t/trigger-send-sms-node-nexmo-when-gpio-changes/19152)
**Author:** [@lodv](https://discourse.nodered.org/u/lodv)\ **Replies:** 7\ **Last updated:** [15 December 2019 17:53 UTC](https://discourse.nodered.org/t/trigger-send-sms-node-nexmo-when-gpio-changes/19152 "2019-12-15T17:53:27Z")
Hi, I want to trigger the sms node the moment the status of a GPIO pin on my raspberry pi changes from high to low. I have no idea how this must be done. When I add a timestamp the sms is send. So the nexmo node is work… --- ## [Newbie - looking for node based on season](https://discourse.nodered.org/t/newbie-looking-for-node-based-on-season/19177)
**Author:** [@RugbyAl](https://discourse.nodered.org/u/RugbyAl)\ **Replies:** 2\ **Last updated:** [15 December 2019 16:57 UTC](https://discourse.nodered.org/t/newbie-looking-for-node-based-on-season/19177 "2019-12-15T16:57:51Z")
Hi. Looking for node that will determine season, e.g. if it's 30 degrees C in lounge in summer, normal, if it's winter, abnormal. Is there anything out there? Can't see anything in pallets. --- ## [Comparing Two String](https://discourse.nodered.org/t/comparing-two-string/19166)
**Author:** [@rafaelnfs](https://discourse.nodered.org/u/rafaelnfs)\ **Replies:** 2\ **Last updated:** [15 December 2019 16:35 UTC](https://discourse.nodered.org/t/comparing-two-string/19166 "2019-12-15T16:35:58Z")
hello im stuck maybe with basic problem (im beginner) comparing two string in debug node i see it well but i dont know why the comparation did not work (sorry for my englis Im salvadorean and english is not my native la… --- ## [CBOR Tagged data](https://discourse.nodered.org/t/cbor-tagged-data/19157)
**Author:** [@Noel](https://discourse.nodered.org/u/Noel)\ **Replies:** 2\ **Last updated:** [15 December 2019 09:02 UTC](https://discourse.nodered.org/t/cbor-tagged-data/19157 "2019-12-15T09:02:46Z")
Hi, i am a newby. I use LTE-M JSON devices to generate gps data, but the newer versions only work on CBOR format. I can not isolate the gps values ( "g" - tag 103 value...) from the payload. I use: http input (buffer) … --- ## [Reduce large JSON and publish over http endpoint](https://discourse.nodered.org/t/reduce-large-json-and-publish-over-http-endpoint/19006)
**Author:** [@RoSi](https://discourse.nodered.org/u/RoSi)\ **Replies:** 16\ **Last updated:** [15 December 2019 13:16 UTC](https://discourse.nodered.org/t/reduce-large-json-and-publish-over-http-endpoint/19006 "2019-12-15T13:16:43Z")
Im having large JSON (darksky api - https://darksky.net/dev/docs) which is too large to process with esp8266 microcontroller. All i need from that JSON is timestamp and temperature from hourly \> data. I've tried many wa… --- ## [Determining list of nodes used in a flow](https://discourse.nodered.org/t/determining-list-of-nodes-used-in-a-flow/19154)
**Author:** [@kolban](https://discourse.nodered.org/u/kolban)\ **Replies:** 3\ **Last updated:** [15 December 2019 12:38 UTC](https://discourse.nodered.org/t/determining-list-of-nodes-used-in-a-flow/19154 "2019-12-15T12:38:17Z")
Imagine a colleague creates a flow and ships me the flow.json. If my colleague has added a new contributed node to his palette and used it in the flow my understanding is that I must do the same in order to be able to … --- ## [Msg.payload missing state element](https://discourse.nodered.org/t/msg-payload-missing-state-element/19126)
**Author:** [@M4TVW](https://discourse.nodered.org/u/M4TVW)\ **Replies:** 9\ **Last updated:** [15 December 2019 08:20 UTC](https://discourse.nodered.org/t/msg-payload-missing-state-element/19126 "2019-12-15T08:20:23Z")
Hello everyone. I'm new here but loving the software already. I'm trying to get Node-Red to report node state back to the Alexa app. I think i have most of it done but struggling with a debug error that says " msg.payl… --- ## [Cant find the node "mqtt-dynamin in"](https://discourse.nodered.org/t/cant-find-the-node-mqtt-dynamin-in/19077)
**Author:** [@Gryskop](https://discourse.nodered.org/u/Gryskop)\ **Replies:** 6\ **Last updated:** [15 December 2019 06:29 UTC](https://discourse.nodered.org/t/cant-find-the-node-mqtt-dynamin-in/19077 "2019-12-15T06:29:11Z")
I have a ESP8266 that publishes a temperature reading every 5 seconds. I subscribe to that topic on my node-red flow, but the values from the esp8266 only updates if I actually publish something back to the esp8266 (swi… --- ## [Zwave device uknown](https://discourse.nodered.org/t/zwave-device-uknown/19149)
**Author:** [@vinnovic](https://discourse.nodered.org/u/vinnovic)\ **Replies:** 9\ **Last updated:** [14 December 2019 20:41 UTC](https://discourse.nodered.org/t/zwave-device-uknown/19149 "2019-12-14T20:41:31Z")
Hi, It seems that when I'm trying to add a zwave device in node-red the device is unknown and the config file is not correct. When I do the same in ozwcp everything is working correct. I think the path to the open zwa… --- ## [Trigger the send smd node when a gpio pin status changes](https://discourse.nodered.org/t/trigger-the-send-smd-node-when-a-gpio-pin-status-changes/19150)
**Author:** [@lodv](https://discourse.nodered.org/u/lodv)\ **Replies:** 2\ **Last updated:** [14 December 2019 17:17 UTC](https://discourse.nodered.org/t/trigger-the-send-smd-node-when-a-gpio-pin-status-changes/19150 "2019-12-14T17:17:26Z")
Hi, I want to send a sms with the nexmo send-sms node when the status of a GPIO pin changes from high to low. I have no idea how I can trigger the node. I hope somebody can help me with a solution. Thank you. Yvonne --- ## [File-In node oddities](https://discourse.nodered.org/t/file-in-node-oddities/17121)
**Author:** [@Bobo](https://discourse.nodered.org/u/Bobo)\ **Replies:** 21\ **Last updated:** [14 December 2019 16:02 UTC](https://discourse.nodered.org/t/file-in-node-oddities/17121 "2019-12-14T16:02:16Z")
I may be the odd one here but wanted to check if this behaviour is normal, or if it's just me :slight\_smile: I have a File-In node set to output "a msg per line". All works as expected except for the last line, which ei… --- ## [How to uninstall Node-Red](https://discourse.nodered.org/t/how-to-uninstall-node-red/19135)
**Author:** [@dps](https://discourse.nodered.org/u/dps)\ **Replies:** 7\ **Last updated:** [14 December 2019 16:01 UTC](https://discourse.nodered.org/t/how-to-uninstall-node-red/19135 "2019-12-14T16:01:53Z")
Hey all, new here and TOTALLY new to Node-Red. Ive never used it before, and I was just looking into it. Well, I installed it with the script that is given in the tutorial for Ubuntu or Debian based systems: bash \<(curl… --- ## [\[Bug\]Import into current flow doesn't seem to work](https://discourse.nodered.org/t/bug-import-into-current-flow-doesnt-seem-to-work/19141)
**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\ **Replies:** 11\ **Last updated:** [14 December 2019 15:05 UTC](https://discourse.nodered.org/t/bug-import-into-current-flow-doesnt-seem-to-work/19141 "2019-12-14T15:05:15Z")
Tested on my Win10 and a Pi Trying to import this into current flow \[{"id":"a8c74407.ec8b58","type":"tab","label":"Flow 2","disabled":false,"info":""},{"id":"d5fe1576.59f688","type":"file in","z":"a8c74407.ec8b58","nam… --- ## [WS2801 on Raspberry Pi not working](https://discourse.nodered.org/t/ws2801-on-raspberry-pi-not-working/19084)
**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\ **Replies:** 18\ **Last updated:** [14 December 2019 12:19 UTC](https://discourse.nodered.org/t/ws2801-on-raspberry-pi-not-working/19084 "2019-12-14T12:19:59Z")
I can't imagine there might be many people using these (string of 50 water proof RGB LEDS that use 2-wire SPI for data/clock) I used to have them working in Node-RED last christmas but they only work this year if I say … --- ## [What is causing my NR to crash/restart?](https://discourse.nodered.org/t/what-is-causing-my-nr-to-crash-restart/19121)
**Author:** [@GoSpursGoNL](https://discourse.nodered.org/u/GoSpursGoNL)\ **Replies:** 5\ **Last updated:** [14 December 2019 09:05 UTC](https://discourse.nodered.org/t/what-is-causing-my-nr-to-crash-restart/19121 "2019-12-14T09:05:02Z")
Hi all, I'm running NR 1.0.3 in Docker. Every once in a while NR seems to crash. Sometimes after a week or so, sometimes even couple of times per day. How can I find out what causes this? In the logs (that I view via Po… --- ## [Inserting multiple columns at once in InfluxDB](https://discourse.nodered.org/t/inserting-multiple-columns-at-once-in-influxdb/19124)
**Author:** [@X99](https://discourse.nodered.org/u/X99)\ **Replies:** 1\ **Last updated:** [13 December 2019 22:30 UTC](https://discourse.nodered.org/t/inserting-multiple-columns-at-once-in-influxdb/19124 "2019-12-13T22:30:47Z")
Hi. I'm kind of new to NodeRed, so pardon me if this question seems obvious. I'm pushing datas from a BMP085 sensor to a MQTT broker. This data is then retrieved and processed into NodeRed and stored into InfluxDB. Th… --- ## [Node-red on Windows exec node issue](https://discourse.nodered.org/t/node-red-on-windows-exec-node-issue/19094)
**Author:** [@ded\_banzai](https://discourse.nodered.org/u/ded_banzai)\ **Replies:** 9\ **Last updated:** [13 December 2019 17:36 UTC](https://discourse.nodered.org/t/node-red-on-windows-exec-node-issue/19094 "2019-12-13T17:36:14Z")
I am trying to control my display power on/off with Node-Red installed on the Windows computer. I tried the exec node with multiple commands and external utilities that work perfectly from the command line but fail in NR… --- ## [Newby: add topic to payload x 2](https://discourse.nodered.org/t/newby-add-topic-to-payload-x-2/19116)
**Author:** [@matisok](https://discourse.nodered.org/u/matisok)\ **Replies:** 2\ **Last updated:** [13 December 2019 16:39 UTC](https://discourse.nodered.org/t/newby-add-topic-to-payload-x-2/19116 "2019-12-13T16:39:32Z")
Hi How do I add a topic to each of these two functions: var msg1 = { payload:msg.payload}; var msg2 = { payload:msg.humidity}; return \[msg1, msg2\]; At this moment it returns two payloads payload: 15 \_msgid: "9c1a815f… --- ## [Using a Pi as a VPN server](https://discourse.nodered.org/t/using-a-pi-as-a-vpn-server/17906)
**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\ **Replies:** 4\ **Last updated:** [25 November 2019 14:34 UTC](https://discourse.nodered.org/t/using-a-pi-as-a-vpn-server/17906 "2019-11-25T14:34:00Z")
In case anyone is interested I have updated by blog post on using a Pi as a VPN server so the instructions are compatible with Raspbian Buster. https://blog.clanlaw.org.uk/pi-vpn-server.html --- ## [Newbie - msg.payload into SQL](https://discourse.nodered.org/t/newbie-msg-payload-into-sql/19051)
**Author:** [@kajoty](https://discourse.nodered.org/u/kajoty)\ **Replies:** 7\ **Last updated:** [13 December 2019 14:41 UTC](https://discourse.nodered.org/t/newbie-msg-payload-into-sql/19051 "2019-12-13T14:41:01Z")
Hi. I'm a newbie to NODE RED, SQL, webserver ... I try to put all the info from msg.payload into a database. I installed everthing and it works for me. SQL connect. Datas are going in. my function is: msg.topic = "I… --- ## [Questions about Payload of trigger node](https://discourse.nodered.org/t/questions-about-payload-of-trigger-node/19093)
**Author:** [@okhiroyuki](https://discourse.nodered.org/u/okhiroyuki)\ **Replies:** 6\ **Last updated:** [13 December 2019 13:55 UTC](https://discourse.nodered.org/t/questions-about-payload-of-trigger-node/19093 "2019-12-13T13:55:46Z")
Hello. I am thinking about this issue. I think the issue may change depending on the interpretation of the options below. the original msg object the latest msg object In other words, I seem to handle the whole msg … --- ## [Linux Node-Red File Permissions](https://discourse.nodered.org/t/linux-node-red-file-permissions/19057)
**Author:** [@Cuzman\_44](https://discourse.nodered.org/u/Cuzman_44)\ **Replies:** 9\ **Last updated:** [13 December 2019 07:06 UTC](https://discourse.nodered.org/t/linux-node-red-file-permissions/19057 "2019-12-13T07:06:23Z")
Hi Guys, I am relatively new to Linux and Node Red and have been trying to find a guide on configuring the Linux (Debian 9) file system for use with Node-Red. I am trying to secure the Node-Red system using the Node-Red… --- ## [Multiple flow trigger inconsistency](https://discourse.nodered.org/t/multiple-flow-trigger-inconsistency/19070)
**Author:** [@prasanndutt87](https://discourse.nodered.org/u/prasanndutt87)\ **Replies:** 2\ **Last updated:** [13 December 2019 06:06 UTC](https://discourse.nodered.org/t/multiple-flow-trigger-inconsistency/19070 "2019-12-13T06:06:45Z")
For my project there are multiple devices and multiple parameters to be captured from each device. Hence I decided to arrange them in multiple flows so that it could be manageable.However, there is unreliable timing of r… --- ## [The problem with multi-byte character when reading library](https://discourse.nodered.org/t/the-problem-with-multi-byte-character-when-reading-library/19092)
**Author:** [@okhiroyuki](https://discourse.nodered.org/u/okhiroyuki)\ **Replies:** 2\ **Last updated:** [13 December 2019 00:13 UTC](https://discourse.nodered.org/t/the-problem-with-multi-byte-character-when-reading-library/19092 "2019-12-13T00:13:43Z")
Hello. A problem of Node-RED@1.0.3 has been reported that multibyte character strings are garbled in the import library function. It has already been issued, but it has been raised here again. How to reproduce Loa… [Previous page](https://discourse.nodered.org/c/general/7.md?page=815) [Next page](https://discourse.nodered.org/c/general/7.md?page=817)