# Latest

**URL:** https://discourse.nodered.org/latest.md?page=963

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

**Page:** 964

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## [How to stop an exec Node, run another exec Node and when it's finished rerun the first](https://discourse.nodered.org/t/how-to-stop-an-exec-node-run-another-exec-node-and-when-its-finished-rerun-the-first/14416)

<div class="topic-metadata">

**Author:** [@HilalAlHakani1](https://discourse.nodered.org/u/HilalAlHakani1)\
**Replies:** 10\
**Last updated:** [5 November 2020 07:42 UTC](https://discourse.nodered.org/t/how-to-stop-an-exec-node-run-another-exec-node-and-when-its-finished-rerun-the-first/14416 "2020-11-05T07:42:55Z")

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Hello i'm new to Node Red , i'm working with a Lora Gps Hat. i have raspberry C code to send Data and another to receive data . the Lora hat can't be receiving and emitting at the same time i have tested the exec Node…

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## [How to extract images from PDF?](https://discourse.nodered.org/t/how-to-extract-images-from-pdf/16846)

<div class="topic-metadata">

**Author:** [@softy2k](https://discourse.nodered.org/u/softy2k)\
**Replies:** 2\
**Last updated:** [5 November 2020 07:30 UTC](https://discourse.nodered.org/t/how-to-extract-images-from-pdf/16846 "2020-11-05T07:30:13Z")

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Hello I am looking for a way to extract (multiple) images from a pdf file. I don\`t want to convert, I need to extract. Thanks

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## [Material Design Icons](https://discourse.nodered.org/t/material-design-icons/35281)

<div class="topic-metadata">

**Author:** [@martyouel](https://discourse.nodered.org/u/martyouel)\
**Replies:** 5\
**Last updated:** [5 November 2020 00:27 UTC](https://discourse.nodered.org/t/material-design-icons/35281 "2020-11-05T00:27:59Z")

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Hi, I am trying to make a nodered dashboard to use it on my wallpanel tablet and to manage my HomeAssistant entities. My concern is the icons available. Right now, I want an icon for my garage door button. In the prelo…

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## [EZO-FLOW I2C help](https://discourse.nodered.org/t/ezo-flow-i2c-help/35118)

<div class="topic-metadata">

**Author:** [@RGebel](https://discourse.nodered.org/u/RGebel)\
**Replies:** 9\
**Last updated:** [5 November 2020 00:03 UTC](https://discourse.nodered.org/t/ezo-flow-i2c-help/35118 "2020-11-05T00:03:30Z")

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EZO-FLO i2c how can i clear total volume?

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## [Barcode scanner output data](https://discourse.nodered.org/t/barcode-scanner-output-data/35268)

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**Author:** [@alex1](https://discourse.nodered.org/u/alex1)\
**Replies:** 3\
**Last updated:** [4 November 2020 23:47 UTC](https://discourse.nodered.org/t/barcode-scanner-output-data/35268 "2020-11-04T23:47:00Z")

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My connecting my usb wireless scanner with raspberry pi zero w then try to display data on nodered. However, the data i get is as shown in the picture. How can i convert it to readable number or string?

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## [Node-Red REST API Call](https://discourse.nodered.org/t/node-red-rest-api-call/35346)

<div class="topic-metadata">

**Author:** [@GulamGaus](https://discourse.nodered.org/u/GulamGaus)\
**Replies:** 1\
**Last updated:** [4 November 2020 23:18 UTC](https://discourse.nodered.org/t/node-red-rest-api-call/35346 "2020-11-04T23:18:26Z")

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Hi, I am new to Node-Red and learning Node-Red. Received a requirement to connect with REST API with given user, Password and clientId. Any example around this? Thanks.

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## [I want to create my script on github and pull it to NodeRed ... Will it work?](https://discourse.nodered.org/t/i-want-to-create-my-script-on-github-and-pull-it-to-nodered-will-it-work/35232)

<div class="topic-metadata">

**Author:** [@ComboKnight](https://discourse.nodered.org/u/ComboKnight)\
**Replies:** 15\
**Last updated:** [4 November 2020 23:07 UTC](https://discourse.nodered.org/t/i-want-to-create-my-script-on-github-and-pull-it-to-nodered-will-it-work/35232 "2020-11-04T23:07:18Z")

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I created a test script on Github and want to pull that script on to nodered .... I know the vice-versa is possible i.e. pulling the script from local machine to NodeRed and then committing the changes to Github.

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## [Can't see more flows (after upgrade)](https://discourse.nodered.org/t/cant-see-more-flows-after-upgrade/35342)

<div class="topic-metadata">

**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\
**Replies:** 3\
**Last updated:** [4 November 2020 21:49 UTC](https://discourse.nodered.org/t/cant-see-more-flows-after-upgrade/35342 "2020-11-04T21:49:15Z")

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Hi, thanks for help, here is the story: I've got the SD corrupted, I bought a new one and I cloned there an old SD image I did last months. Node red 0,20 was working with the old flow. Then I start upgrade raspbian, nod…

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## [Chart with multiple lines](https://discourse.nodered.org/t/chart-with-multiple-lines/35338)

<div class="topic-metadata">

**Author:** [@marwa4](https://discourse.nodered.org/u/marwa4)\
**Replies:** 3\
**Last updated:** [4 November 2020 21:08 UTC](https://discourse.nodered.org/t/chart-with-multiple-lines/35338 "2020-11-04T21:08:43Z")

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Hello everyone, I’m trying to show two graphs on one chart with data extracted from sqlite, it’s working with only one graph, but when I try to show both, nothing is showing! Any help

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## [Custom Node: reoccurring processing, context storage,](https://discourse.nodered.org/t/custom-node-reoccurring-processing-context-storage/34875)

<div class="topic-metadata">

**Author:** [@nygma2004](https://discourse.nodered.org/u/nygma2004)\
**Replies:** 8\
**Last updated:** [4 November 2020 17:49 UTC](https://discourse.nodered.org/t/custom-node-reoccurring-processing-context-storage/34875 "2020-11-04T17:49:03Z")

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Hi All, I am considering creating my first custom node. I have the functionality working in a function node already. I have two question I did not find the answer to in the blog posts I found: In my flow, I have an in…

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## [On smart speaker voice command collect retained topic value from MQTT server and speak it out](https://discourse.nodered.org/t/on-smart-speaker-voice-command-collect-retained-topic-value-from-mqtt-server-and-speak-it-out/34955)

<div class="topic-metadata">

**Author:** [@kes](https://discourse.nodered.org/u/kes)\
**Replies:** 10\
**Last updated:** [4 November 2020 17:13 UTC](https://discourse.nodered.org/t/on-smart-speaker-voice-command-collect-retained-topic-value-from-mqtt-server-and-speak-it-out/34955 "2020-11-04T17:13:30Z")

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How do I collect a retained topic from the MQTT server and pass it to NORA. eg "Hey Google, what is the boiler pressure." I have the boiler pressure updated to the MQTT server every 2 mins. I had an extensive play las…

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## [Enable and disable individual UI nodes based on external state](https://discourse.nodered.org/t/enable-and-disable-individual-ui-nodes-based-on-external-state/35323)

<div class="topic-metadata">

**Author:** [@Amyd](https://discourse.nodered.org/u/Amyd)\
**Replies:** 7\
**Last updated:** [4 November 2020 16:49 UTC](https://discourse.nodered.org/t/enable-and-disable-individual-ui-nodes-based-on-external-state/35323 "2020-11-04T16:49:28Z")

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Not sure if this more like a general question or Dashboard specific, and it's probably also really stupid, but here goes anyway: I am doing my first Node-RED project, and I would like to be able to enable and disable inv…

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## [Function node problem with ver 1.2.2](https://discourse.nodered.org/t/function-node-problem-with-ver-1-2-2/35320)

<div class="topic-metadata">

**Author:** [@panmanjon](https://discourse.nodered.org/u/panmanjon)\
**Replies:** 4\
**Last updated:** [4 November 2020 15:20 UTC](https://discourse.nodered.org/t/function-node-problem-with-ver-1-2-2/35320 "2020-11-04T15:20:44Z")

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I developed a flow on a raspberry pi using version node-red 1.1.2 and node.js ver 14.6.0 which works fine. It takes in can data from a battery and serial data from a victron mppt 150¦70-tr. The battery and serial data ar…

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## [Multiple inputs with external conditions from Home-Assistant](https://discourse.nodered.org/t/multiple-inputs-with-external-conditions-from-home-assistant/35312)

<div class="topic-metadata">

**Author:** [@noobred](https://discourse.nodered.org/u/noobred)\
**Replies:** 8\
**Last updated:** [4 November 2020 14:05 UTC](https://discourse.nodered.org/t/multiple-inputs-with-external-conditions-from-home-assistant/35312 "2020-11-04T14:05:43Z")

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Hi all, I read nearly every article and the Node-Red Primer (here) to figure out how to accomplish my node setup. Following requirements: interval every 2hours turn on this switch - with a delay of 30min turn it off (…

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## [Font size on the x and y axis of the charts](https://discourse.nodered.org/t/font-size-on-the-x-and-y-axis-of-the-charts/35261)

<div class="topic-metadata">

**Author:** [@Manfred53](https://discourse.nodered.org/u/Manfred53)\
**Replies:** 4\
**Last updated:** [4 November 2020 12:53 UTC](https://discourse.nodered.org/t/font-size-on-the-x-and-y-axis-of-the-charts/35261 "2020-11-04T12:53:42Z")

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Hi there! Does anyone know how I can reduce the font size on the axes of the charts? At the Label I can do it f.e. with \< font size =2 \> "label-name", but not at the axes.

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## [MQTT - full topic alias](https://discourse.nodered.org/t/mqtt-full-topic-alias/35255)

<div class="topic-metadata">

**Author:** [@thalesmaoa](https://discourse.nodered.org/u/thalesmaoa)\
**Replies:** 8\
**Last updated:** [4 November 2020 12:41 UTC](https://discourse.nodered.org/t/mqtt-full-topic-alias/35255 "2020-11-04T12:41:55Z")

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Hi, I’m building a new server to run Emoncms and NodeRed with MQTT as base com protocol. I have, at least, 10 relay command to be executed in this system And more 20 sensors inside a container that will be send 500km a…

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## [\[Solved\] Node status color grey shows as black with gray outline](https://discourse.nodered.org/t/solved-node-status-color-grey-shows-as-black-with-gray-outline/35302)

<div class="topic-metadata">

**Author:** [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Replies:** 4\
**Last updated:** [4 November 2020 12:05 UTC](https://discourse.nodered.org/t/solved-node-status-color-grey-shows-as-black-with-gray-outline/35302 "2020-11-04T12:05:10Z")

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I'm working on a PR to the 'Random' node and wanted to use node status to report some information. This is what I've got coded: this.status({fill:"gray",shape:"dot",text:"random: from " + node.low + " to " + node.high})…

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## [Conditions for context and global](https://discourse.nodered.org/t/conditions-for-context-and-global/35060)

<div class="topic-metadata">

**Author:** [@Chorum](https://discourse.nodered.org/u/Chorum)\
**Replies:** 10\
**Last updated:** [4 November 2020 11:44 UTC](https://discourse.nodered.org/t/conditions-for-context-and-global/35060 "2020-11-04T11:44:44Z")

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Hello, are there Conditions for context and global variables that should not be broken ? My Node Red is crashing since yesterday. I have rebuild a minimal Flow for my Purpose and Node Red is crashing again after implem…

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## [Image analysis and comparison](https://discourse.nodered.org/t/image-analysis-and-comparison/20698)

<div class="topic-metadata">

**Author:** [@hathemi](https://discourse.nodered.org/u/hathemi)\
**Replies:** 5\
**Last updated:** [4 November 2020 10:31 UTC](https://discourse.nodered.org/t/image-analysis-and-comparison/20698 "2020-11-04T10:31:30Z")

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i want to compare two images and detect the percentage difference between them. can this be done with node-red module?

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## [Change size ui-form date (datepicker)](https://discourse.nodered.org/t/change-size-ui-form-date-datepicker/34906)

<div class="topic-metadata">

**Author:** [@ArneR](https://discourse.nodered.org/u/ArneR)\
**Replies:** 2\
**Last updated:** [27 October 2020 20:26 UTC](https://discourse.nodered.org/t/change-size-ui-form-date-datepicker/34906 "2020-10-27T20:26:20Z")

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Hello Is it possible to change the size of the settings \[blue on picture\] when choosing a date? I'm using 'ui-form' on a large touchscreen. I can change the global text size, but not the 'dropdowns' in the date picker. …

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## [Change function to read .txt file for chart](https://discourse.nodered.org/t/change-function-to-read-txt-file-for-chart/35315)

<div class="topic-metadata">

**Author:** [@rand](https://discourse.nodered.org/u/rand)\
**Replies:** 1\
**Last updated:** [4 November 2020 09:23 UTC](https://discourse.nodered.org/t/change-function-to-read-txt-file-for-chart/35315 "2020-11-04T09:23:07Z")

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Hi, I am having an issue trying to format my .txt to be able to display on my chart. Currently my .txt is displaying like this and I’m able to shore data on graph: 4,2020-11-02,18:28:37 However, my .txt is being chang…

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## [Install all project dependencies from command line](https://discourse.nodered.org/t/install-all-project-dependencies-from-command-line/16039)

<div class="topic-metadata">

**Author:** [@corbosman](https://discourse.nodered.org/u/corbosman)\
**Replies:** 6\
**Last updated:** [4 November 2020 09:17 UTC](https://discourse.nodered.org/t/install-all-project-dependencies-from-command-line/16039 "2020-11-04T09:17:26Z")

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Hi all, if I have a local project, and move it to other installations, it there a way to install the project dependencies listed in the project package.json from the command line?

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## [AWS IoT Publishing duplicate msgs](https://discourse.nodered.org/t/aws-iot-publishing-duplicate-msgs/35009)

<div class="topic-metadata">

**Author:** [@DizzyLurker](https://discourse.nodered.org/u/DizzyLurker)\
**Replies:** 10\
**Last updated:** [4 November 2020 09:07 UTC](https://discourse.nodered.org/t/aws-iot-publishing-duplicate-msgs/35009 "2020-11-04T09:07:52Z")

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Hi, I am having an issue where I am using Node-REDs input MQTT nodes to publish/subscribe to topics via the AWS IoT core broker. I am using QOS 0. The issue is when subscribed to the topics on Node-RED I will get dupl…

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## [Trigger dashboard notification based on chart data from .txt](https://discourse.nodered.org/t/trigger-dashboard-notification-based-on-chart-data-from-txt/35308)

<div class="topic-metadata">

**Author:** [@rand](https://discourse.nodered.org/u/rand)\
**Replies:** 1\
**Last updated:** [4 November 2020 09:03 UTC](https://discourse.nodered.org/t/trigger-dashboard-notification-based-on-chart-data-from-txt/35308 "2020-11-04T09:03:05Z")

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Hi so I am having an issue; I want a notification to appear on my dashboard based on the result on my chart. For example, if my total on my chart is above 42, a notification to be triggered. Here is my flow, please let…

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## [Login and Password in dashboard (localhost:1880/ui)?!](https://discourse.nodered.org/t/login-and-password-in-dashboard-localhost-1880-ui/2132)

<div class="topic-metadata">

**Author:** [@imadouino](https://discourse.nodered.org/u/imadouino)\
**Replies:** 19\
**Last updated:** [21 January 2020 06:16 UTC](https://discourse.nodered.org/t/login-and-password-in-dashboard-localhost-1880-ui/2132 "2020-01-21T06:16:26Z")

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Hi, i wish to put a login and password in my interface dashboard (localhost:1880/ui) like in (localhost:1880) how i can do that please?! Thank you for your help.

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## [Trigger-empty node](https://discourse.nodered.org/t/trigger-empty-node/35201)

<div class="topic-metadata">

**Author:** [@jordirt](https://discourse.nodered.org/u/jordirt)\
**Replies:** 5\
**Last updated:** [4 November 2020 07:39 UTC](https://discourse.nodered.org/t/trigger-empty-node/35201 "2020-11-04T07:39:11Z")

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good morning. I have a problem with the trigger-empty node: I send on or off and it gives me this error: TypeError: triggers.keys is not a function " A few weeks ago it worked correctly for me since it does not have muc…

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## [Alexa Home, need a skill?](https://discourse.nodered.org/t/alexa-home-need-a-skill/35301)

<div class="topic-metadata">

**Author:** [@SteveMann](https://discourse.nodered.org/u/SteveMann)\
**Replies:** 0\
**Last updated:** [3 November 2020 23:18 UTC](https://discourse.nodered.org/t/alexa-home-need-a-skill/35301 "2020-11-03T23:18:08Z")

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I am using Alexa Home nodes to turn things on or off. Usually ESP-based stuff mostly flashed with Tasmota. All of my devices are defined on https://alexa-node-red.bm.hardill.me.uk/devices I have Alexa Auto in my car an…

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## [Stop executing the python code using "Python Shell" Node](https://discourse.nodered.org/t/stop-executing-the-python-code-using-python-shell-node/35194)

<div class="topic-metadata">

**Author:** [@Sandy](https://discourse.nodered.org/u/Sandy)\
**Replies:** 7\
**Last updated:** [3 November 2020 21:30 UTC](https://discourse.nodered.org/t/stop-executing-the-python-code-using-python-shell-node/35194 "2020-11-03T21:30:02Z")

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Hi All, I executed a python script(taken locally) using a python shell node in node-red. But As I am running Infinite Loop code I was unable to stop the execution. Please Help me out..?

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## [Best reliable NAS set-up for Rasp Pi 4. Ideas?](https://discourse.nodered.org/t/best-reliable-nas-set-up-for-rasp-pi-4-ideas/34956)

<div class="topic-metadata">

**Author:** [@kes](https://discourse.nodered.org/u/kes)\
**Replies:** 5\
**Last updated:** [3 November 2020 20:03 UTC](https://discourse.nodered.org/t/best-reliable-nas-set-up-for-rasp-pi-4-ideas/34956 "2020-11-03T20:03:50Z")

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As many will know the latest version of the rasp pi supports SSD disk drives. I have built almost every generation of rasp pi, and eventually had the SD card fail on me, becasue it was written to too many times. What ha…

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## [Not getting Telegram messages that I see on the phone](https://discourse.nodered.org/t/not-getting-telegram-messages-that-i-see-on-the-phone/35221)

<div class="topic-metadata">

**Author:** [@nygma2004](https://discourse.nodered.org/u/nygma2004)\
**Replies:** 6\
**Last updated:** [3 November 2020 20:00 UTC](https://discourse.nodered.org/t/not-getting-telegram-messages-that-i-see-on-the-phone/35221 "2020-11-03T20:00:46Z")

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I am trying to use Telegram to send messages from my phone to Node-Red. An android app is sending messages to the telegram bot I have created. The app is sending the message with the bot token and my chat id. When I open…

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