# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=274

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

**Page:** 275

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## [How to send purge message with node-red-node-email](https://discourse.nodered.org/t/how-to-send-purge-message-with-node-red-node-email/72542)

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**Author:** [@tpbillund](https://discourse.nodered.org/u/tpbillund)\
**Replies:** 0\
**Last updated:** [21 December 2022 17:39 UTC](https://discourse.nodered.org/t/how-to-send-purge-message-with-node-red-node-email/72542 "2022-12-21T17:39:56Z")

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Hi I am deleting some mail with the node-red-node-email, but the mails is still there, just hidden and with a label "Deleting/Deleted". If I want to delete the message from the server, I need to send a "Purge message" …

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## [Change Deconz State](https://discourse.nodered.org/t/change-deconz-state/72366)

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**Author:** [@cairon](https://discourse.nodered.org/u/cairon)\
**Replies:** 2\
**Last updated:** [21 December 2022 17:31 UTC](https://discourse.nodered.org/t/change-deconz-state/72366 "2022-12-21T17:31:33Z")

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Hi there, I am using Deconz for my motion sensors to turn on/off the light. My problem is that when I am moving fast between the rooms the msg.paypload.presence of some motion sensors is still "true" although I left th…

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## [Uploading Array or Matrix on the Thingspeak channel](https://discourse.nodered.org/t/uploading-array-or-matrix-on-the-thingspeak-channel/72540)

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**Author:** [@zakha001](https://discourse.nodered.org/u/zakha001)\
**Replies:** 0\
**Last updated:** [21 December 2022 17:22 UTC](https://discourse.nodered.org/t/uploading-array-or-matrix-on-the-thingspeak-channel/72540 "2022-12-21T17:22:07Z")

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Hi everyone, I am trying to upload data from Node-red to my Thingspeak channel. I am using 'node-red-contrib-thingspeak42' node to send multiple sensor values. But it uploads single value per field after every 15 second…

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## [Installed npm install node-red-contrib-onvif-nodes@0.0.1-beta.16 Node Onvif does not exist](https://discourse.nodered.org/t/installed-npm-install-node-red-contrib-onvif-nodes-0-0-1-beta-16-node-onvif-does-not-exist/72514)

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**Author:** [@staebchen0](https://discourse.nodered.org/u/staebchen0)\
**Replies:** 3\
**Last updated:** [21 December 2022 17:15 UTC](https://discourse.nodered.org/t/installed-npm-install-node-red-contrib-onvif-nodes-0-0-1-beta-16-node-onvif-does-not-exist/72514 "2022-12-21T17:15:04Z")

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Hi, I'm new to the field and have a question about installing from: onvif-camera-control on Raspberry Pi 4 npm install node-red-contrib-onvif-nodes@0.0.1-beta.16 After installation, I can't find the Onvif node in Nod…

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## [Node-red UIbuilder Vue APEXCHARTS](https://discourse.nodered.org/t/node-red-uibuilder-vue-apexcharts/72265)

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**Author:** [@Kamal8393](https://discourse.nodered.org/u/Kamal8393)\
**Replies:** 8\
**Last updated:** [21 December 2022 16:38 UTC](https://discourse.nodered.org/t/node-red-uibuilder-vue-apexcharts/72265 "2022-12-21T16:38:40Z")

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Hello, I have integrated the below area-graph https://apexcharts.com/vue-chart-demos/area-charts/basic/ In my vue uibuilder template provided by node-red. Now I would like to have my graph responsive to the new data …

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## [Extract data from a long string](https://discourse.nodered.org/t/extract-data-from-a-long-string/72531)

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**Author:** [@mzsolnay](https://discourse.nodered.org/u/mzsolnay)\
**Replies:** 5\
**Last updated:** [21 December 2022 15:56 UTC](https://discourse.nodered.org/t/extract-data-from-a-long-string/72531 "2022-12-21T15:56:05Z")

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Hi ! I am trying to check for memory usage on an OrangePi, and publish it via mqtt. Using the 'free' command in a terminal window gives me this: total used free shared buff/cache availa…

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## [How to pass flow.get("variable") to subflow?](https://discourse.nodered.org/t/how-to-pass-flow-get-variable-to-subflow/72503)

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**Author:** [@namexx](https://discourse.nodered.org/u/namexx)\
**Replies:** 5\
**Last updated:** [21 December 2022 12:53 UTC](https://discourse.nodered.org/t/how-to-pass-flow-get-variable-to-subflow/72503 "2022-12-21T12:53:54Z")

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Hi, im begginer on this world of the node-red. Im trying to pass the value of a type flow variable. This to be worked on in a subflow. How cand send variable to subflow?

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## [NodeRED MQTT Multitopics send to Single Bucket of InfluxDB](https://discourse.nodered.org/t/nodered-mqtt-multitopics-send-to-single-bucket-of-influxdb/71496)

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**Author:** [@pgncr](https://discourse.nodered.org/u/pgncr)\
**Replies:** 25\
**Last updated:** [21 December 2022 12:04 UTC](https://discourse.nodered.org/t/nodered-mqtt-multitopics-send-to-single-bucket-of-influxdb/71496 "2022-12-21T12:04:13Z")

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Hello All, Help needed in combining 2 mqtt topics (esp/temperature, esp/humidity) into single InfluxDB bucket. Source is sending DHT22 Sensor data via ESP32 over WiFi then MQTT Broker (Mosquito). Then it is send to Nod…

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## [How to make entries in different columns of googlesheeet](https://discourse.nodered.org/t/how-to-make-entries-in-different-columns-of-googlesheeet/72422)

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**Author:** [@nit-cyber](https://discourse.nodered.org/u/nit-cyber)\
**Replies:** 3\
**Last updated:** [21 December 2022 11:20 UTC](https://discourse.nodered.org/t/how-to-make-entries-in-different-columns-of-googlesheeet/72422 "2022-12-21T11:20:19Z")

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using this node and want to pop-up data from different payloads to different columns in googlesheet Anyone please suggest the solution

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## [Google sheet node not able to take data from different payloads at single moment](https://discourse.nodered.org/t/google-sheet-node-not-able-to-take-data-from-different-payloads-at-single-moment/72524)

<div class="topic-metadata">

**Author:** [@nit-cyber](https://discourse.nodered.org/u/nit-cyber)\
**Replies:** 0\
**Last updated:** [21 December 2022 11:17 UTC](https://discourse.nodered.org/t/google-sheet-node-not-able-to-take-data-from-different-payloads-at-single-moment/72524 "2022-12-21T11:17:19Z")

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google sheet not able to pop up data in column range from different payloads sometime it overlaps or do shit of data

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## [RFXtrx node not connecting](https://discourse.nodered.org/t/rfxtrx-node-not-connecting/72518)

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**Author:** [@dubbfredda](https://discourse.nodered.org/u/dubbfredda)\
**Replies:** 5\
**Last updated:** [21 December 2022 11:08 UTC](https://discourse.nodered.org/t/rfxtrx-node-not-connecting/72518 "2022-12-21T11:08:40Z")

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I try to control my 433MHz wall plugs from Node-RED with a RFXcom. Have added node-red-contrib-rfxcom and have set up the out-node. But the rfx-light node will not get connected What can be wrong?

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## [Simple http request](https://discourse.nodered.org/t/simple-http-request/72517)

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**Author:** [@elvisj007](https://discourse.nodered.org/u/elvisj007)\
**Replies:** 1\
**Last updated:** [21 December 2022 09:49 UTC](https://discourse.nodered.org/t/simple-http-request/72517 "2022-12-21T09:49:03Z")

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I am trying to make a simple GET request to an API running in ubuntu container in my local system port 3000. but my flow shows error ECONNREFUSED. I am getting the response from my server when i hit the API url via my …

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## [Node-red-serialport Serial-in Debug No Messages](https://discourse.nodered.org/t/node-red-serialport-serial-in-debug-no-messages/72489)

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**Author:** [@JS2401](https://discourse.nodered.org/u/JS2401)\
**Replies:** 6\
**Last updated:** [21 December 2022 02:58 UTC](https://discourse.nodered.org/t/node-red-serialport-serial-in-debug-no-messages/72489 "2022-12-21T02:58:16Z")

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I cannot get the Debug node to display received RS232 data on the debug window. Data is being received because I see it come up on a terminal with the comand "dd if=/dev/ttyUSB0" Any thoughts?

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## [How can CRC16 XModem accept Hex Input](https://discourse.nodered.org/t/how-can-crc16-xmodem-accept-hex-input/72466)

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**Author:** [@Adel](https://discourse.nodered.org/u/Adel)\
**Replies:** 2\
**Last updated:** [20 December 2022 23:46 UTC](https://discourse.nodered.org/t/how-can-crc16-xmodem-accept-hex-input/72466 "2022-12-20T23:46:56Z")

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I'm use CRC16 XModem as shown in the flow but getting wrong Result, Where it use ASCII Inputs and I need to use it as Hex Input. For Example the below flow result is 9f8e but the expected result is 834A flows (4).js…

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## [Curl Post new flow](https://discourse.nodered.org/t/curl-post-new-flow/72275)

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**Author:** [@ruireis97](https://discourse.nodered.org/u/ruireis97)\
**Replies:** 18\
**Last updated:** [20 December 2022 23:35 UTC](https://discourse.nodered.org/t/curl-post-new-flow/72275 "2022-12-20T23:35:34Z")

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Hey, I'm trying to create new flow tabs on my Node-red but i keep getting this error message. "Error: missing nodes property"

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## [Starting node red with empty flows](https://discourse.nodered.org/t/starting-node-red-with-empty-flows/72486)

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**Author:** [@g.m.work](https://discourse.nodered.org/u/g.m.work)\
**Replies:** 9\
**Last updated:** [20 December 2022 21:04 UTC](https://discourse.nodered.org/t/starting-node-red-with-empty-flows/72486 "2022-12-20T21:04:10Z")

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when i start node-red, it opens up the last project i was working on. To start a new one clean, I have to delete all tabs and then manually delete nodes which is lot of hassle. I tried the "project" feature but it never …

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## [ESPEasy and NodeRed](https://discourse.nodered.org/t/espeasy-and-nodered/72473)

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**Author:** [@stefan2210](https://discourse.nodered.org/u/stefan2210)\
**Replies:** 12\
**Last updated:** [20 December 2022 20:21 UTC](https://discourse.nodered.org/t/espeasy-and-nodered/72473 "2022-12-20T20:21:06Z")

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Hello, I have 2 projects running, which send their data from a ESP8266 via MQTT to Node-Red and from there it is sent to an Influx-DB. Later I can use this data for Grafana to visualize. The problem is, that all that is…

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## [Help to login this page... I want to do web scraping](https://discourse.nodered.org/t/help-to-login-this-page-i-want-to-do-web-scraping/69262)

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**Author:** [@boo](https://discourse.nodered.org/u/boo)\
**Replies:** 29\
**Last updated:** [20 December 2022 18:04 UTC](https://discourse.nodered.org/t/help-to-login-this-page-i-want-to-do-web-scraping/69262 "2022-12-20T18:04:31Z")

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Hi...im trying to do some scraping and get data on what all devices are connected in my local network and check for internet status. Firstly i need to login into my router page (I know username and password but can't ge…

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## [Multipass start failed on macos Ventura](https://discourse.nodered.org/t/multipass-start-failed-on-macos-ventura/72479)

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**Author:** [@abeldacosta](https://discourse.nodered.org/u/abeldacosta)\
**Replies:** 2\
**Last updated:** [20 December 2022 17:38 UTC](https://discourse.nodered.org/t/multipass-start-failed-on-macos-ventura/72479 "2022-12-20T17:38:43Z")

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Although everthing worked fine for weeks, this morning, impossible to start my instance despite mutiple laptop reboots. Logs says \[2022-12-20T15:55:03.709\] \[debug\] \[sshfs-mounts\] No mounts to stop for instance "precise…

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## [Node-Red with MQTTsaving data to Postgres](https://discourse.nodered.org/t/node-red-with-mqttsaving-data-to-postgres/72450)

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**Author:** [@nino](https://discourse.nodered.org/u/nino)\
**Replies:** 1\
**Last updated:** [20 December 2022 16:41 UTC](https://discourse.nodered.org/t/node-red-with-mqttsaving-data-to-postgres/72450 "2022-12-20T16:41:26Z")

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Hello, I have to create a flow with node-red that through communication with Mqtt then saves me the data of temp and hum on the db of postgres But I don’t know if I’m doing things right \[ { "id": "0e83a1d24…

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## [Motion sensors to turn on an outlet that powers a water pump](https://discourse.nodered.org/t/motion-sensors-to-turn-on-an-outlet-that-powers-a-water-pump/69951)

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**Author:** [@nodeBoy816](https://discourse.nodered.org/u/nodeBoy816)\
**Replies:** 28\
**Last updated:** [20 December 2022 14:03 UTC](https://discourse.nodered.org/t/motion-sensors-to-turn-on-an-outlet-that-powers-a-water-pump/69951 "2022-12-20T14:03:09Z")

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Howdy all! I’m trying to find a motion sensor (or rather collection of sensors - 5 sensors in 5 different rooms) that I could get to turn on a zigbee certified smart plug (leaning toward/but not married to the Decora Sma…

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## [Filtering Contents of a http get request](https://discourse.nodered.org/t/filtering-contents-of-a-http-get-request/72270)

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**Author:** [@Rob3](https://discourse.nodered.org/u/Rob3)\
**Replies:** 8\
**Last updated:** [20 December 2022 13:42 UTC](https://discourse.nodered.org/t/filtering-contents-of-a-http-get-request/72270 "2022-12-20T13:42:44Z")

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I am using Node-red v3.0.2 I am trying to extract temperatur from a wether webpage by using the http request node. As response i get the html contant of the webpage and i just want to filter out the data wich is inside…

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## [Worldmap loads colour map before greyscale](https://discourse.nodered.org/t/worldmap-loads-colour-map-before-greyscale/72455)

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**Author:** [@rmwiseman](https://discourse.nodered.org/u/rmwiseman)\
**Replies:** 3\
**Last updated:** [20 December 2022 13:15 UTC](https://discourse.nodered.org/t/worldmap-loads-colour-map-before-greyscale/72455 "2022-12-20T13:15:17Z")

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In my Worldmap instance, I've got "OpenStreetMap Greyscale" and "ESRI Dark Grey" in the map list, and the first of these is my base map. I don't know if it's a quirk of Leaflet or something to do with Worldmap itself, b…

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## [Set a command to delay notification](https://discourse.nodered.org/t/set-a-command-to-delay-notification/72448)

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**Author:** [@HHUBS](https://discourse.nodered.org/u/HHUBS)\
**Replies:** 3\
**Last updated:** [20 December 2022 13:04 UTC](https://discourse.nodered.org/t/set-a-command-to-delay-notification/72448 "2022-12-20T13:04:15Z")

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I'm new to node red and I'm setting up notifications on of camera when someone is detected. This is the setup below: This is the notification (ignore the pic and message, it's just an inject node) The setup is by…

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## [Node-red-contrib-modbus and MAX485 TTL to RS485 converter](https://discourse.nodered.org/t/node-red-contrib-modbus-and-max485-ttl-to-rs485-converter/72447)

<div class="topic-metadata">

**Author:** [@Aivaras1](https://discourse.nodered.org/u/Aivaras1)\
**Replies:** 1\
**Last updated:** [20 December 2022 12:58 UTC](https://discourse.nodered.org/t/node-red-contrib-modbus-and-max485-ttl-to-rs485-converter/72447 "2022-12-20T12:58:00Z")

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Hi, Is it possible to use MAX485 TTL to RS485 converter in node-red ? converter link: https://roboticx.ps/product/max485-ttl-to-rs485/ library: node-red-contrib-modbus (node) - Node-RED I found that it uses /dev/ttyS…

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## [Issue configuring MQTT "AI on the edge" with Node-Red](https://discourse.nodered.org/t/issue-configuring-mqtt-ai-on-the-edge-with-node-red/72215)

<div class="topic-metadata">

**Author:** [@mimijojo](https://discourse.nodered.org/u/mimijojo)\
**Replies:** 2\
**Last updated:** [20 December 2022 12:38 UTC](https://discourse.nodered.org/t/issue-configuring-mqtt-ai-on-the-edge-with-node-red/72215 "2022-12-20T12:38:56Z")

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I'm using "AI on the edge" (Release: v13.0.7 (Commit: 304b9e0)) on my ESP32-CAM. Here the config.ini file including the MQTT parameters : \[MakeImage\] ;LogImageLocation = /log/source WaitBeforeTakingPicture = 5 ;LogfileR…

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## [Sqlite SELECT OK from terminal, empty result from NR](https://discourse.nodered.org/t/sqlite-select-ok-from-terminal-empty-result-from-nr/72440)

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**Author:** [@Petr](https://discourse.nodered.org/u/Petr)\
**Replies:** 13\
**Last updated:** [20 December 2022 10:37 UTC](https://discourse.nodered.org/t/sqlite-select-ok-from-terminal-empty-result-from-nr/72440 "2022-12-20T10:37:48Z")

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I have quite complex SQL query. From the terminal on the server everything is OK with the command sqlite3 power.sqlite ".read sql.txt" (my query is stored in the sql.txt file). Unfortunatelly from the NR the result of…

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## [Searching for hashtags on Mastodon](https://discourse.nodered.org/t/searching-for-hashtags-on-mastodon/72424)

<div class="topic-metadata">

**Author:** [@ralphcrutzen](https://discourse.nodered.org/u/ralphcrutzen)\
**Replies:** 1\
**Last updated:** [20 December 2022 09:46 UTC](https://discourse.nodered.org/t/searching-for-hashtags-on-mastodon/72424 "2022-12-20T09:46:14Z")

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Has anyone successfully used the getMessage node from node-red-contrib-mastodon (node) - Node-RED to search for a specific hashtag yet? I got the sendMessage node working, but getMessage doesn´t respond to the hashtag I…

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## [Express deprecated res.status("200") - Should not be String in Response Node at Status Code Prop](https://discourse.nodered.org/t/express-deprecated-res-status-200-should-not-be-string-in-response-node-at-status-code-prop/72418)

<div class="topic-metadata">

**Author:** [@MeGusta](https://discourse.nodered.org/u/MeGusta)\
**Replies:** 6\
**Last updated:** [20 December 2022 09:37 UTC](https://discourse.nodered.org/t/express-deprecated-res-status-200-should-not-be-string-in-response-node-at-status-code-prop/72418 "2022-12-20T09:37:38Z")

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Same as : Strange log line From time to time I get the Warnung : express deprecated res.status("200"): use res.status(200) instead at It comes from the http Response Node : I set there a Status Code (without quota…

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## [Serial port loopback test RPI](https://discourse.nodered.org/t/serial-port-loopback-test-rpi/72284)

<div class="topic-metadata">

**Author:** [@devifast](https://discourse.nodered.org/u/devifast)\
**Replies:** 38\
**Last updated:** [20 December 2022 08:37 UTC](https://discourse.nodered.org/t/serial-port-loopback-test-rpi/72284 "2022-12-20T08:37:10Z")

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How to test serial port ttyAMA0 on RPI by connecting RX and TX. with wire? Thanks. There is no communication between the two.

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