# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1384

[Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md)

**Page:** 1385

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## [What goes in, isnt what comes out?](https://discourse.nodered.org/t/what-goes-in-isnt-what-comes-out/1241)

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**Author:** [@ausing](https://discourse.nodered.org/u/ausing)\
**Replies:** 5\
**Last updated:** [3 July 2018 06:31 UTC](https://discourse.nodered.org/t/what-goes-in-isnt-what-comes-out/1241 "2018-07-03T06:31:23Z")

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Hello, first time node-red user here. I was wondering if someone out there is expert enough to help me understand why the msg.payload is changing on me. I’m trying to set my Nest thermometer with https://github.com/hje…

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## [Problem understanding OWFS node](https://discourse.nodered.org/t/problem-understanding-owfs-node/1232)

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**Author:** [@bjoern](https://discourse.nodered.org/u/bjoern)\
**Replies:** 4\
**Last updated:** [2 July 2018 19:53 UTC](https://discourse.nodered.org/t/problem-understanding-owfs-node/1232 "2018-07-02T19:53:28Z")

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Hello guys, at the moment i try to build a 1-W to Ethernet Gateway. Therefor i have a raspberry pi with a 9 channel 1-W Shield. It runs well with piCore. Now i like to publish the sensor data via node-red to MQTT / UDP …

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## [Issue with template node](https://discourse.nodered.org/t/issue-with-template-node/1235)

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**Author:** [@realjax](https://discourse.nodered.org/u/realjax)\
**Replies:** 5\
**Last updated:** [2 July 2018 18:48 UTC](https://discourse.nodered.org/t/issue-with-template-node/1235 "2018-07-02T18:48:39Z")

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Hello, I have a question about the use of the dashboard template node. I have a template that contains some code to set a switch, (I can not use the dashboard switch node for this because of some custom stuff) here is…

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## [Logs after deletion node](https://discourse.nodered.org/t/logs-after-deletion-node/1244)

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**Author:** [@dedynobre](https://discourse.nodered.org/u/dedynobre)\
**Replies:** 4\
**Last updated:** [2 July 2018 18:28 UTC](https://discourse.nodered.org/t/logs-after-deletion-node/1244 "2018-07-02T18:28:17Z")

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Hi, I added a node (s7com) and soon after deleting the same only it is generating a lot of connection failure logs. Is this normal or has the component been active in some other configuration?

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## [Node-red freezes running only a few nodes](https://discourse.nodered.org/t/node-red-freezes-running-only-a-few-nodes/1007)

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**Author:** [@leafboy](https://discourse.nodered.org/u/leafboy)\
**Replies:** 45\
**Last updated:** [2 July 2018 18:25 UTC](https://discourse.nodered.org/t/node-red-freezes-running-only-a-few-nodes/1007 "2018-07-02T18:25:14Z")

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Hello everybody. I am quite new to node-red so I hope you bear with me. On January I started my first Raspberry Pi projects. Sooner or later I found out some visualization would be quite nice. So I run a search and foun…

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## [Quering the PFOD protocol (or any other TCP protocol)](https://discourse.nodered.org/t/quering-the-pfod-protocol-or-any-other-tcp-protocol/1225)

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**Author:** [@xentity](https://discourse.nodered.org/u/xentity)\
**Replies:** 3\
**Last updated:** [2 July 2018 18:12 UTC](https://discourse.nodered.org/t/quering-the-pfod-protocol-or-any-other-tcp-protocol/1225 "2018-07-02T18:12:42Z")

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The ArduMower project uses the so called PFOD protocol to communicate via bluetooth and wifi. The ESP8266 provides a TCP Server and I am already able to connect to the TCP Server. However, I am not able to query the dev…

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## [Arduino and PCF8575 input monitoring](https://discourse.nodered.org/t/arduino-and-pcf8575-input-monitoring/1238)

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**Author:** [@markost](https://discourse.nodered.org/u/markost)\
**Replies:** 0\
**Last updated:** [2 July 2018 14:03 UTC](https://discourse.nodered.org/t/arduino-and-pcf8575-input-monitoring/1238 "2018-07-02T14:03:55Z")

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Hi, this is a project for monitoring input states of various device. Devices on input are anything with open/close state indication. Goal: • up to 64 inputs (status 1 or 0) over one serial port(USB) • surveillance o…

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## [Limit number of connection on tcp in node](https://discourse.nodered.org/t/limit-number-of-connection-on-tcp-in-node/1141)

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**Author:** [@EddieChun](https://discourse.nodered.org/u/EddieChun)\
**Replies:** 1\
**Last updated:** [2 July 2018 13:52 UTC](https://discourse.nodered.org/t/limit-number-of-connection-on-tcp-in-node/1141 "2018-07-02T13:52:12Z")

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Hi guys, I’m using the tcp-in node in “listen on” mode and I need to limit the number of simultaneous connections it can handle. How can I do this? Thanks for the help in advance!

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## [Node Red Data doesn t store in sqlite](https://discourse.nodered.org/t/node-red-data-doesn-t-store-in-sqlite/1229)

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**Author:** [@YT2310](https://discourse.nodered.org/u/YT2310)\
**Replies:** 7\
**Last updated:** [2 July 2018 10:49 UTC](https://discourse.nodered.org/t/node-red-data-doesn-t-store-in-sqlite/1229 "2018-07-02T10:49:10Z")

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Hello, I am using a sqlite databank to store a few datas in there and getting them into a dashboard. But after my Pi breakdown and reboot, the data are not store. There is the following error in Node red: " Error: SQL…

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## [Node-Red DropBox Proxy (Windows)](https://discourse.nodered.org/t/node-red-dropbox-proxy-windows/1146)

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**Author:** [@david.glaister](https://discourse.nodered.org/u/david.glaister)\
**Replies:** 3\
**Last updated:** [2 July 2018 08:12 UTC](https://discourse.nodered.org/t/node-red-dropbox-proxy-windows/1146 "2018-07-02T08:12:39Z")

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I have been asked to develop a Node-Red flow to interact with DropBox. Using the DropBox node, I can upload and download, however, when I am connected via the corporate network I experience what appears to be connection…

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## [Ui\_template size overlap](https://discourse.nodered.org/t/ui-template-size-overlap/1033)

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**Author:** [@markost](https://discourse.nodered.org/u/markost)\
**Replies:** 7\
**Last updated:** [2 July 2018 06:26 UTC](https://discourse.nodered.org/t/ui-template-size-overlap/1033 "2018-07-02T06:26:37Z")

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Hi, 1st situation: I have 7 groups on dashboard, size of all groups are the same (6). See picture. 2nd situation: Again, 7 groups, but one group size is 7(intrusion), and all other group size are 6. In this case on…

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## [Cannot delete Projects \<Git Remote\>](https://discourse.nodered.org/t/cannot-delete-projects-git-remote/1222)

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**Author:** [@IoTPlay](https://discourse.nodered.org/u/IoTPlay)\
**Replies:** 1\
**Last updated:** [1 July 2018 20:03 UTC](https://discourse.nodered.org/t/cannot-delete-projects-git-remote/1222 "2018-07-01T20:03:05Z")

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Hi, I have a project on BitBucket, which I clone down to RPi into the folders as required by the Projects feature, plus add the keys of the project in …/projects/.sshkeys, then start-up Node-RED, which works well. Howev…

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## [Input order in the Chart node](https://discourse.nodered.org/t/input-order-in-the-chart-node/1213)

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**Author:** [@Backup](https://discourse.nodered.org/u/Backup)\
**Replies:** 14\
**Last updated:** [1 July 2018 17:13 UTC](https://discourse.nodered.org/t/input-order-in-the-chart-node/1213 "2018-07-01T17:13:17Z")

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Every time I tweek my chart the order of the inputs changes. So on one instance the order is setpoint, brewbox, brewbucket, cool switch, heat switch; and the next tweek the order might be reversed with the colors assign…

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## [Node with multiple outputs](https://discourse.nodered.org/t/node-with-multiple-outputs/1223)

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**Author:** [@ncherry](https://discourse.nodered.org/u/ncherry)\
**Replies:** 2\
**Last updated:** [1 July 2018 15:07 UTC](https://discourse.nodered.org/t/node-with-multiple-outputs/1223 "2018-07-01T15:07:52Z")

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I’m working on a timer (and I am familiar with some of the other timers) and I need to send commands on one output and the countdown on the other. I need to use node.send so return(\[ msgA, msgB \]) is not an option. Can I…

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## [I am trying to make a basic calculator](https://discourse.nodered.org/t/i-am-trying-to-make-a-basic-calculator/1218)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 5\
**Last updated:** [1 July 2018 12:24 UTC](https://discourse.nodered.org/t/i-am-trying-to-make-a-basic-calculator/1218 "2018-07-01T12:24:30Z")

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For the sake of getting my head around how to use dashboards, buttons etc, I have set myself a take of building a BASIC calculator. It only does + - \* and / It is just to get a better understanding of things talking to…

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## [Topic not working SORRY! Not it is working](https://discourse.nodered.org/t/topic-not-working-sorry-not-it-is-working/1214)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 7\
**Last updated:** [1 July 2018 12:22 UTC](https://discourse.nodered.org/t/topic-not-working-sorry-not-it-is-working/1214 "2018-07-01T12:22:29Z")

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AARRGGHH! Believe me, it wasn’t working. Only after I posted it did it start to work. I am frantically looking how to delete the thread/post, but it still eludes me. Sorry folks, I’m stuck - again. Problem: Two sig…

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## [Is there a way to set the usename of mqtt dynamically](https://discourse.nodered.org/t/is-there-a-way-to-set-the-usename-of-mqtt-dynamically/1215)

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**Author:** [@dilepa](https://discourse.nodered.org/u/dilepa)\
**Replies:** 2\
**Last updated:** [1 July 2018 08:27 UTC](https://discourse.nodered.org/t/is-there-a-way-to-set-the-usename-of-mqtt-dynamically/1215 "2018-07-01T08:27:22Z")

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I want to set the mqtt username dynamically using the default node red mqtt node? Any hits as to how i can do it? Thanks

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## [Still searching for dashboard colour adjustment on this part](https://discourse.nodered.org/t/still-searching-for-dashboard-colour-adjustment-on-this-part/1197)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 14\
**Last updated:** [30 June 2018 22:45 UTC](https://discourse.nodered.org/t/still-searching-for-dashboard-colour-adjustment-on-this-part/1197 "2018-06-30T22:45:23Z")

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Ok, sorry folks, but here is today’s dumb question: (See attached) I am looking at the code for this page - as an example. I know how to set the BACKGROUND colour (or picture) is set, but I don’t know how to put a pic…

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## [Undeletable things in Dashboard menu](https://discourse.nodered.org/t/undeletable-things-in-dashboard-menu/1200)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 5\
**Last updated:** [30 June 2018 22:23 UTC](https://discourse.nodered.org/t/undeletable-things-in-dashboard-menu/1200 "2018-06-30T22:23:20Z")

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While trying to work out the other post’s problem I discovered I have a couple of entries on my dashboard list which I can’t delete… When I open them, they are set to that page, but if I “EDIT” them and say DELETE, noth…

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## [Bookmarked topics](https://discourse.nodered.org/t/bookmarked-topics/1206)

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**Author:** [@drmibell](https://discourse.nodered.org/u/drmibell)\
**Replies:** 4\
**Last updated:** [30 June 2018 18:39 UTC](https://discourse.nodered.org/t/bookmarked-topics/1206 "2018-06-30T18:39:36Z")

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Is it possible to display a list of the topics I have bookmarked? Have I missed something obvious? I have bookmarked a lot of stuff on the assumption that it would be easy to go back and find things.

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## [Stopping a GrovePi sensor with a button using Node-RED](https://discourse.nodered.org/t/stopping-a-grovepi-sensor-with-a-button-using-node-red/1158)

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**Author:** [@gabrieldicieri](https://discourse.nodered.org/u/gabrieldicieri)\
**Replies:** 3\
**Last updated:** [30 June 2018 17:30 UTC](https://discourse.nodered.org/t/stopping-a-grovepi-sensor-with-a-button-using-node-red/1158 "2018-06-30T17:30:17Z")

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(sorry for my english, im from brazil) Im using a GrovePi board with a ultrasonic sensor attached, the sensor sends values to my graph and i want to stop this with a dashboard button, im trying to stop using a button who…

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## [Problems installing openzwave on Node Red](https://discourse.nodered.org/t/problems-installing-openzwave-on-node-red/1194)

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**Author:** [@SteveMann](https://discourse.nodered.org/u/SteveMann)\
**Replies:** 0\
**Last updated:** [29 June 2018 21:49 UTC](https://discourse.nodered.org/t/problems-installing-openzwave-on-node-red/1194 "2018-06-29T21:49:31Z")

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I’ve just spent most of a day trying to install openzwave for Node Red on my Pi 3. I am hopelessly lost, and worse, the instructions I’ve found conflict with each other. I never even got to install openzwave, the prere…

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## [Using mongoDB with dashboard template](https://discourse.nodered.org/t/using-mongodb-with-dashboard-template/1160)

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**Author:** [@YubeiX](https://discourse.nodered.org/u/YubeiX)\
**Replies:** 4\
**Last updated:** [29 June 2018 20:35 UTC](https://discourse.nodered.org/t/using-mongodb-with-dashboard-template/1160 "2018-06-29T20:35:45Z")

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I have a customized ui template to display some real time information. The info is currently stored and updated in a mongo database. Is there a way to access the mongoDB in the template node? More specifically, how could…

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## [Beginner help with configuring Current State node](https://discourse.nodered.org/t/beginner-help-with-configuring-current-state-node/1192)

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**Author:** [@donvan57](https://discourse.nodered.org/u/donvan57)\
**Replies:** 2\
**Last updated:** [29 June 2018 17:48 UTC](https://discourse.nodered.org/t/beginner-help-with-configuring-current-state-node/1192 "2018-06-29T17:48:26Z")

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I’m new to Node-RED but love it so far. Here’s the problem that I’m running into. I’m trying to use a “current state” node (api-current-state) to check the state of binary.sensor #2 upon receiving a trigger node output…

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## [Node-RED no longer installed in Rasbian by default?](https://discourse.nodered.org/t/node-red-no-longer-installed-in-rasbian-by-default/1178)

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**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 5\
**Last updated:** [29 June 2018 17:31 UTC](https://discourse.nodered.org/t/node-red-no-longer-installed-in-rasbian-by-default/1178 "2018-06-29T17:31:09Z")

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Looks like Node-RED has been removed from the default build for Rasbian. Not a big issue as it says it is now one of the recommended applications. A new installer has been included for recommended apps. Not tried this,…

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## [How to determine source of an event for manual override?](https://discourse.nodered.org/t/how-to-determine-source-of-an-event-for-manual-override/1167)

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**Author:** [@emlarsen](https://discourse.nodered.org/u/emlarsen)\
**Replies:** 4\
**Last updated:** [29 June 2018 14:01 UTC](https://discourse.nodered.org/t/how-to-determine-source-of-an-event-for-manual-override/1167 "2018-06-29T14:01:22Z")

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I have a smart switch that controls an exhaust fan. I have a flow that compares outside temp to inside temp and if the outside is cooler than inside it turns the fan on. My issue is this - I want to allow the switch to m…

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## [Access a property of the dashboard within a Express Application](https://discourse.nodered.org/t/access-a-property-of-the-dashboard-within-a-express-application/1186)

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**Author:** [@AtenrevCode](https://discourse.nodered.org/u/AtenrevCode)\
**Replies:** 6\
**Last updated:** [29 June 2018 13:54 UTC](https://discourse.nodered.org/t/access-a-property-of-the-dashboard-within-a-express-application/1186 "2018-06-29T13:54:13Z")

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I’m trying to add a security layer to my Node-Red instance and I would like to know if I can retrieve somehow a property of the dashboard, specifically the name of the tab the user is trying to access, from a middleware …

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## [Clean a chart with a button](https://discourse.nodered.org/t/clean-a-chart-with-a-button/1185)

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**Author:** [@gabrieldicieri](https://discourse.nodered.org/u/gabrieldicieri)\
**Replies:** 8\
**Last updated:** [29 June 2018 13:02 UTC](https://discourse.nodered.org/t/clean-a-chart-with-a-button/1185 "2018-06-29T13:02:46Z")

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I need to reset a chart with a button in node-RED and i didnt know where to start. The buttn has to clear all the data in de chart, any ideas that how i can do that? Thanks Gabriel

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## [Sync Modbus Polling Nodes](https://discourse.nodered.org/t/sync-modbus-polling-nodes/1179)

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**Author:** [@BowenWT](https://discourse.nodered.org/u/BowenWT)\
**Replies:** 1\
**Last updated:** [29 June 2018 12:27 UTC](https://discourse.nodered.org/t/sync-modbus-polling-nodes/1179 "2018-06-29T12:27:01Z")

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Hi there, Is there a way to sync the polling of modbus nodes so when the data is stored in the columns they stay the same for each poll? Can you assign them by each the payload for each individual msg.topic?

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## [Simple arduino-node red project](https://discourse.nodered.org/t/simple-arduino-node-red-project/1173)

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**Author:** [@shahrunaim](https://discourse.nodered.org/u/shahrunaim)\
**Replies:** 2\
**Last updated:** [29 June 2018 10:07 UTC](https://discourse.nodered.org/t/simple-arduino-node-red-project/1173 "2018-06-29T10:07:57Z")

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hello everyone. I’m working with DHT11 sensor to monitor the temperature. However i need to add control limits, such as the buzzer will buzz if temp exceed the limits. does anyone know any flow that might be work? TQ

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