# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1175

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

**Page:** 1176

---

## [Postgres Node causing issues](https://discourse.nodered.org/t/postgres-node-causing-issues/20196)

<div class="topic-metadata">

**Author:** [@lesterkelly](https://discourse.nodered.org/u/lesterkelly)\
**Replies:** 4\
**Last updated:** [13 January 2020 08:59 UTC](https://discourse.nodered.org/t/postgres-node-causing-issues/20196 "2020-01-13T08:59:27Z")

</div>

Hi, I'm seeing a very strange issue while using "node-red-contrib-postgres-variable". For some reason when I use this node I can't set a flow constant in one branch and get the flow constant in a different branch. I c…

---

## [Temperature Control MAX31865, Arduino, Rpi](https://discourse.nodered.org/t/temperature-control-max31865-arduino-rpi/20241)

<div class="topic-metadata">

**Author:** [@Alden](https://discourse.nodered.org/u/Alden)\
**Replies:** 0\
**Last updated:** [13 January 2020 04:23 UTC](https://discourse.nodered.org/t/temperature-control-max31865-arduino-rpi/20241 "2020-01-13T04:23:55Z")

</div>

I have a two functions that successfully read the temperature from a MAX31865 serial connection via Arduino and sends out a 0 or 1 if it is above or below the max temp I set within the function. I will use this message …

---

## [Scaling A Button Size](https://discourse.nodered.org/t/scaling-a-button-size/20234)

<div class="topic-metadata">

**Author:** [@Randy](https://discourse.nodered.org/u/Randy)\
**Replies:** 0\
**Last updated:** [12 January 2020 22:13 UTC](https://discourse.nodered.org/t/scaling-a-button-size/20234 "2020-01-12T22:13:51Z")

</div>

I'm trying to scale the size of this button to about half of it's size to fit more of them on the dashboard. Played around with the Width and Height but all I get is part of the button missing or not centered. Maybe som…

---

## [iPhone not able to access Node-RED UI](https://discourse.nodered.org/t/iphone-not-able-to-access-node-red-ui/20225)

<div class="topic-metadata">

**Author:** [@jdhoog](https://discourse.nodered.org/u/jdhoog)\
**Replies:** 3\
**Last updated:** [12 January 2020 17:43 UTC](https://discourse.nodered.org/t/iphone-not-able-to-access-node-red-ui/20225 "2020-01-12T17:43:55Z")

</div>

I have a IMac hosting Node-RED. I am able to creat and use the UI but I am unable to access it from an iPhone or iPad on the same Wi-Fi. 127.x.x.x:1880/UI. Any ideas?

---

## [Something has really messed up on one of my machines](https://discourse.nodered.org/t/something-has-really-messed-up-on-one-of-my-machines/20178)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 4\
**Last updated:** [12 January 2020 11:51 UTC](https://discourse.nodered.org/t/something-has-really-messed-up-on-one-of-my-machines/20178 "2020-01-12T11:51:31Z")

</div>

Ok, I have made mistakes, but to the best of my knowledge, all those stupid ones have been put to rest and things are good. I have as a main machine a NUC and I test flows on it and when they work I export the flows to …

---

## [OpenWeather API Flow](https://discourse.nodered.org/t/openweather-api-flow/20203)

<div class="topic-metadata">

**Author:** [@vlturner](https://discourse.nodered.org/u/vlturner)\
**Replies:** 1\
**Last updated:** [12 January 2020 11:42 UTC](https://discourse.nodered.org/t/openweather-api-flow/20203 "2020-01-12T11:42:22Z")

</div>

Here is my current flow. I will add another 5 day forecast too when I get it done. \[{"id":"6acc9db.7a04264","type":"tab","label":"Proelian","disabled":false,"info":""},{"id":"41b964aa.16c99c","type":"inject","z":"6acc…

---

## [How to copy my Flows - From Pi to win10?](https://discourse.nodered.org/t/how-to-copy-my-flows-from-pi-to-win10/20195)

<div class="topic-metadata">

**Author:** [@lost66](https://discourse.nodered.org/u/lost66)\
**Replies:** 6\
**Last updated:** [12 January 2020 09:27 UTC](https://discourse.nodered.org/t/how-to-copy-my-flows-from-pi-to-win10/20195 "2020-01-12T09:27:51Z")

</div>

hi guys, so i made quite an complex flow on my pi some time ago, but since then something went wrong with the pi / usb stick. i want to continue with the flow so i decided to install nr on my laptop, i also managed t…

---

## [Raspberry Pi GPIO - email](https://discourse.nodered.org/t/raspberry-pi-gpio-email/20207)

<div class="topic-metadata">

**Author:** [@Guynouk](https://discourse.nodered.org/u/Guynouk)\
**Replies:** 3\
**Last updated:** [12 January 2020 08:40 UTC](https://discourse.nodered.org/t/raspberry-pi-gpio-email/20207 "2020-01-12T08:40:41Z")

</div>

Just got my Raspberry Pi set up. Now trying to create my first flow. Have managed to successfully generate/send emails when an input pin (GPIO3) changes state but I've got a couple of problems I'm struggling to resolve. …

---

## [Unauthorized when accessing custom admin endpoint](https://discourse.nodered.org/t/unauthorized-when-accessing-custom-admin-endpoint/20201)

<div class="topic-metadata">

**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 5\
**Last updated:** [12 January 2020 07:32 UTC](https://discourse.nodered.org/t/unauthorized-when-accessing-custom-admin-endpoint/20201 "2020-01-12T07:32:19Z")

</div>

Hi folks, Paul (@Paul-Reed) reported an issue about my new node-red-contrib-xterm node: Would really to have it solved, since that is the last 'known' issue before I can publish my first version on NPM. But I'm stuc…

---

## [How to install and use "node-red-contrib-mcp23017"](https://discourse.nodered.org/t/how-to-install-and-use-node-red-contrib-mcp23017/5930)

<div class="topic-metadata">

**Author:** [@Andre](https://discourse.nodered.org/u/Andre)\
**Replies:** 13\
**Last updated:** [12 January 2020 05:19 UTC](https://discourse.nodered.org/t/how-to-install-and-use-node-red-contrib-mcp23017/5930 "2020-01-12T05:19:00Z")

</div>

Hello everyone, I would like to know how to install the node-red-contrib-mcp23017 node node-red-contrib-mcp23017 (node) - Node-RED but I only get error messages when I try to install it. I don't understand how to i…

---

## [Mustache notation not working in Call Service Node](https://discourse.nodered.org/t/mustache-notation-not-working-in-call-service-node/20206)

<div class="topic-metadata">

**Author:** [@nineclicks](https://discourse.nodered.org/u/nineclicks)\
**Replies:** 2\
**Last updated:** [12 January 2020 01:10 UTC](https://discourse.nodered.org/t/mustache-notation-not-working-in-call-service-node/20206 "2020-01-12T01:10:43Z")

</div>

I have a function feeding in to a Call Service Node. This is the function code: let state = context.get("door\_state"); if (state === undefined) { state = 0; } state ^= 1; context.set("door\_state", state); msg.servic…

---

## [Setting up Webhook connection between 2 servers](https://discourse.nodered.org/t/setting-up-webhook-connection-between-2-servers/20192)

<div class="topic-metadata">

**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 10\
**Last updated:** [11 January 2020 22:34 UTC](https://discourse.nodered.org/t/setting-up-webhook-connection-between-2-servers/20192 "2020-01-11T22:34:40Z")

</div>

I have previously used node-red-contrib-webhookrelay which is really easy to set up and use, although it is a 'paid for' service if you make more than 150 webhook calls per month. Another forum post inspired me to try a…

---

## [Using the simple gate node](https://discourse.nodered.org/t/using-the-simple-gate-node/20199)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [11 January 2020 22:11 UTC](https://discourse.nodered.org/t/using-the-simple-gate-node/20199 "2020-01-11T22:11:59Z")

</div>

This is all thanks to "DrMike" who made node-red-contrib-simple-gate I was in a situation where I needed to turn on one of many and only have that single one passing signals. I know recently I have posted a revelation …

---

## [Sporadic measeruments to timeseries db in a regular interval](https://discourse.nodered.org/t/sporadic-measeruments-to-timeseries-db-in-a-regular-interval/20075)

<div class="topic-metadata">

**Author:** [@ssahlender](https://discourse.nodered.org/u/ssahlender)\
**Replies:** 18\
**Last updated:** [11 January 2020 21:21 UTC](https://discourse.nodered.org/t/sporadic-measeruments-to-timeseries-db-in-a-regular-interval/20075 "2020-01-11T21:21:41Z")

</div>

Hi together, I have some idea to save sporadic measurements in a regular interval to a time series database but I'm not sure if that's the right approach or if there are better ones. Some info: I'm using node-red-cont…

---

## [\[Announce\] node-red-contrib-pifacecad](https://discourse.nodered.org/t/announce-node-red-contrib-pifacecad/20165)

<div class="topic-metadata">

**Author:** [@erfanjahanshahlo](https://discourse.nodered.org/u/erfanjahanshahlo)\
**Replies:** 4\
**Last updated:** [11 January 2020 18:40 UTC](https://discourse.nodered.org/t/announce-node-red-contrib-pifacecad/20165 "2020-01-11T18:40:16Z")

</div>

About This module is PiFace CAD node for node red. Install via Git Run the following code in your raspberry pi terminal cd /home/pi/.node-red/node\_modules git clone https://github.com/erfanjahanshahlo/node-red-contrib-…

---

## [Volume slider for Node-red Dashboard](https://discourse.nodered.org/t/volume-slider-for-node-red-dashboard/20188)

<div class="topic-metadata">

**Author:** [@konrul](https://discourse.nodered.org/u/konrul)\
**Replies:** 14\
**Last updated:** [11 January 2020 17:31 UTC](https://discourse.nodered.org/t/volume-slider-for-node-red-dashboard/20188 "2020-01-11T17:31:51Z")

</div>

Hello, I am very new here and I have just registered to solve my problem. I want to use Node-RED in order to control Kodi. I am able to control play-pause with this code: {"jsonrpc": "2.0", "method": "Player.PlayPause",…

---

## [Node-red-node-mysql 0.0.19 "ER\_HANDSHAKE\_ERROR: Bad handshake"](https://discourse.nodered.org/t/node-red-node-mysql-0-0-19-er-handshake-error-bad-handshake/20098)

<div class="topic-metadata">

**Author:** [@digidax](https://discourse.nodered.org/u/digidax)\
**Replies:** 21\
**Last updated:** [11 January 2020 15:29 UTC](https://discourse.nodered.org/t/node-red-node-mysql-0-0-19-er-handshake-error-bad-handshake/20098 "2020-01-11T15:29:01Z")

</div>

Hi, the endpoint for connecting mysql (v5.x) produces this error: "Error: ER\_HANDSHAKE\_ERROR: Bad handshake". Login from the cli of this CentOS 7 Linux machine to the mysql server is working. What can I do please? Nod…

---

## [PID Mixing Valve Temperature control](https://discourse.nodered.org/t/pid-mixing-valve-temperature-control/18316)

<div class="topic-metadata">

**Author:** [@sokomm](https://discourse.nodered.org/u/sokomm)\
**Replies:** 28\
**Last updated:** [11 January 2020 13:20 UTC](https://discourse.nodered.org/t/pid-mixing-valve-temperature-control/18316 "2020-01-11T13:20:06Z")

</div>

Hello I need help controling a mixsing valve so that the output temperature is around 60 C

---

## [Calculate a checksum](https://discourse.nodered.org/t/calculate-a-checksum/20142)

<div class="topic-metadata">

**Author:** [@zamzon](https://discourse.nodered.org/u/zamzon)\
**Replies:** 10\
**Last updated:** [11 January 2020 09:51 UTC](https://discourse.nodered.org/t/calculate-a-checksum/20142 "2020-01-11T09:51:13Z")

</div>

Hi I need to calculate a checksum i a buffer payload the way to calculate the checksum is as follow In Windows, Start / Programs / Accessories / Calculator In Calculator, under View, Select Scientific In Calcu…

---

## [NW.js Node-RED template](https://discourse.nodered.org/t/nw-js-node-red-template/20183)

<div class="topic-metadata">

**Author:** [@okhiroyuki](https://discourse.nodered.org/u/okhiroyuki)\
**Replies:** 2\
**Last updated:** [11 January 2020 05:54 UTC](https://discourse.nodered.org/t/nw-js-node-red-template/20183 "2020-01-11T05:54:08Z")

</div>

Hi, I created NW.js Node-RED template. Currently, macOS version packages can be generated. If you are interested in NW.js, please check it out. What is NW.js NW.js is very similar to Electron and allows you to create…

---

## [Homekit users - which nodes have you installed?](https://discourse.nodered.org/t/homekit-users-which-nodes-have-you-installed/11044)

<div class="topic-metadata">

**Author:** [@877](https://discourse.nodered.org/u/877)\
**Replies:** 29\
**Last updated:** [11 January 2020 05:43 UTC](https://discourse.nodered.org/t/homekit-users-which-nodes-have-you-installed/11044 "2020-01-11T05:43:42Z")

</div>

I'm using the Homekit bridged node , however there is a known bug which means that node red needs restarting after every deploy (otherwise the Homekit nodes do not work). The developer is working on a fix, which I am gr…

---

## [Code review for newish plugin](https://discourse.nodered.org/t/code-review-for-newish-plugin/19990)

<div class="topic-metadata">

**Author:** [@iOnline247](https://discourse.nodered.org/u/iOnline247)\
**Replies:** 6\
**Last updated:** [11 January 2020 00:49 UTC](https://discourse.nodered.org/t/code-review-for-newish-plugin/19990 "2020-01-11T00:49:04Z")

</div>

I'm close to publishing a new plugin, but would like a code review for common mistakes, since this is my first one. Please take a look and provide feedback. https://github.com/iOnline247/node-red-contrib-aws-any Thank…

---

## [Searching for a node injector with an input](https://discourse.nodered.org/t/searching-for-a-node-injector-with-an-input/20168)

<div class="topic-metadata">

**Author:** [@pvanklink](https://discourse.nodered.org/u/pvanklink)\
**Replies:** 10\
**Last updated:** [10 January 2020 22:03 UTC](https://discourse.nodered.org/t/searching-for-a-node-injector-with-an-input/20168 "2020-01-10T22:03:24Z")

</div>

I used a injector-node in the passed with an INPUT functionality. I need this to reset my dashboarditems. Is is this node gone or am i looking wrong? Another question is that i use an dashboard list node. i fill this…

---

## [MQTT triggering notifications on deploy](https://discourse.nodered.org/t/mqtt-triggering-notifications-on-deploy/20163)

<div class="topic-metadata">

**Author:** [@Mobile\_NR\_Env](https://discourse.nodered.org/u/Mobile_NR_Env)\
**Replies:** 5\
**Last updated:** [10 January 2020 21:32 UTC](https://discourse.nodered.org/t/mqtt-triggering-notifications-on-deploy/20163 "2020-01-10T21:32:42Z")

</div>

I'm sure this must be a simple fix. HA trigger node automatically disconnect then reconnect on deploy of changes in Node Red. Now I've switched to MQTT states for triggers. When I deploy changes on any flow, I'm gettin…

---

## [Http-request password - 401 error](https://discourse.nodered.org/t/http-request-password-401-error/10313)

<div class="topic-metadata">

**Author:** [@va3mw](https://discourse.nodered.org/u/va3mw)\
**Replies:** 9\
**Last updated:** [10 January 2020 19:47 UTC](https://discourse.nodered.org/t/http-request-password-401-error/10313 "2020-01-10T19:47:36Z")

</div>

This is some pretty basic stuff that is challenging me as a new user of Node-Red. I have a web switch I am trying to control that is password protected. I created the http-request to the page with basic authentication. …

---

## [\[ANNOUNCE\] node-red-contrib-energenie-ener314rt](https://discourse.nodered.org/t/announce-node-red-contrib-energenie-ener314rt/10475)

<div class="topic-metadata">

**Author:** [@Achronite](https://discourse.nodered.org/u/Achronite)\
**Replies:** 14\
**Last updated:** [10 January 2020 18:46 UTC](https://discourse.nodered.org/t/announce-node-red-contrib-energenie-ener314rt/10475 "2020-01-10T18:46:06Z")

</div>

Hi everyone, I've just completed testing of my first node-red module. You can use the nodes of this module to control and monitor the Energenie MiHome radio based smart devices such as adapters, sockets, lights and rela…

---

## [How to identify which instance of node is this](https://discourse.nodered.org/t/how-to-identify-which-instance-of-node-is-this/20154)

<div class="topic-metadata">

**Author:** [@kiran](https://discourse.nodered.org/u/kiran)\
**Replies:** 1\
**Last updated:** [10 January 2020 17:52 UTC](https://discourse.nodered.org/t/how-to-identify-which-instance-of-node-is-this/20154 "2020-01-10T17:52:19Z")

</div>

i made one custom node named as "PLC", if after deploying flows there are 5 nodes of PLC is there on flows In JS file of PLC node i want to know what is number of current node out of 5

---

## [How to increase the timeout of http response and http in nodes in nodered](https://discourse.nodered.org/t/how-to-increase-the-timeout-of-http-response-and-http-in-nodes-in-nodered/18561)

<div class="topic-metadata">

**Author:** [@Arun](https://discourse.nodered.org/u/Arun)\
**Replies:** 5\
**Last updated:** [10 January 2020 17:34 UTC](https://discourse.nodered.org/t/how-to-increase-the-timeout-of-http-response-and-http-in-nodes-in-nodered/18561 "2020-01-10T17:34:40Z")

</div>

I am experiencing an issue where the http response node is not sending a response if the request goes beyond 2 minutes. For http request node we can increase this timeout by editing the settings.js file. Similarly, how c…

---

## [SSL Cert for a A record](https://discourse.nodered.org/t/ssl-cert-for-a-a-record/20088)

<div class="topic-metadata">

**Author:** [@scottriggle](https://discourse.nodered.org/u/scottriggle)\
**Replies:** 9\
**Last updated:** [10 January 2020 17:10 UTC](https://discourse.nodered.org/t/ssl-cert-for-a-a-record/20088 "2020-01-10T17:10:22Z")

</div>

I've just installed Node-Red for the first time and need some help setting up the SSL. The problem is on my hosting company I have (sample) domain, I've set up an A record home.domain.com and pointed it to my house. The…

---

## [Deploy button enabled after no change edit of node](https://discourse.nodered.org/t/deploy-button-enabled-after-no-change-edit-of-node/20157)

<div class="topic-metadata">

**Author:** [@MaxS](https://discourse.nodered.org/u/MaxS)\
**Replies:** 6\
**Last updated:** [10 January 2020 15:25 UTC](https://discourse.nodered.org/t/deploy-button-enabled-after-no-change-edit-of-node/20157 "2020-01-10T15:25:28Z")

</div>

If you have a node with a config node as a property (for example Websocket in). If you don't give the config node field a value (leave it empty, or don't create a config node) when you press done and deploy, and then ope…

[Previous page](https://discourse.nodered.org/latest.md?page=1174)

[Next page](https://discourse.nodered.org/latest.md?page=1176)