# General **URL:** https://discourse.nodered.org/c/general/7.md?page=967 [Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md) **Page:** 968 --- ## [HTTP in handling JSON Object via POST](https://discourse.nodered.org/t/http-in-handling-json-object-via-post/453)
**Author:** [@RubberChicken](https://discourse.nodered.org/u/RubberChicken)\ **Replies:** 2\ **Last updated:** [28 May 2018 20:48 UTC](https://discourse.nodered.org/t/http-in-handling-json-object-via-post/453 "2018-05-28T20:48:29Z")
Hi, I have been using the http request node to get JSON data from solar inverters which works fine and returns an object as can be seen here: (ok, seems I can only post one image) I now want to use the http in node to… --- ## [DS18B20 Temperature Driving Wemo Switch](https://discourse.nodered.org/t/ds18b20-temperature-driving-wemo-switch/172)
**Author:** [@TF33](https://discourse.nodered.org/u/TF33)\ **Replies:** 60\ **Last updated:** [28 May 2018 18:51 UTC](https://discourse.nodered.org/t/ds18b20-temperature-driving-wemo-switch/172 "2018-05-28T18:51:19Z")
I’ve created an app that is taking the temperature from three DS18B20 sensors. I want to use the temperature from one of these sensors to drive a Wemo plug. My idea is that the temperature is \<22 the Wemo plug turns on… --- ## [Node-Red not working](https://discourse.nodered.org/t/node-red-not-working/444)
**Author:** [@mammoet](https://discourse.nodered.org/u/mammoet)\ **Replies:** 5\ **Last updated:** [28 May 2018 13:54 UTC](https://discourse.nodered.org/t/node-red-not-working/444 "2018-05-28T13:54:28Z")
watch other reply please --- ## [Hysteresis node](https://discourse.nodered.org/t/hysteresis-node/430)
**Author:** [@martinschki](https://discourse.nodered.org/u/martinschki)\ **Replies:** 11\ **Last updated:** [28 May 2018 12:53 UTC](https://discourse.nodered.org/t/hysteresis-node/430 "2018-05-28T12:53:11Z")
I’m looking for a hysteresis function and I’m struggling a bit … I came across several threads mentioning the thermostat node. But that node only does temp and assumes status false if temp is too high which is ok with … --- ## [Global context/variables](https://discourse.nodered.org/t/global-context-variables/427)
**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\ **Replies:** 15\ **Last updated:** [27 May 2018 21:30 UTC](https://discourse.nodered.org/t/global-context-variables/427 "2018-05-27T21:30:38Z")
I’m stuck. I am writing code for multiple machines and it is the same on all, but for an identifier “tag”. So as it is, I write the code with the “tag” in nodes here and there and it works. Then when I copy it to anot… --- ## [MQTT Issue on received msg.payloads and servers](https://discourse.nodered.org/t/mqtt-issue-on-received-msg-payloads-and-servers/433)
**Author:** [@GChapo](https://discourse.nodered.org/u/GChapo)\ **Replies:** 2\ **Last updated:** [27 May 2018 14:08 UTC](https://discourse.nodered.org/t/mqtt-issue-on-received-msg-payloads-and-servers/433 "2018-05-27T14:08:02Z")
I have an issue with my MQTT setup. It would appear that all msg.payloads in are being received twice and I cannot figure out why? Also, if I choose a different server it will change the server to the same on all other… --- ## [Ds18b20 node modification help](https://discourse.nodered.org/t/ds18b20-node-modification-help/423)
**Author:** [@sjegz](https://discourse.nodered.org/u/sjegz)\ **Replies:** 16\ **Last updated:** [27 May 2018 11:20 UTC](https://discourse.nodered.org/t/ds18b20-node-modification-help/423 "2018-05-27T11:20:10Z")
Hey guys. Currently using this node in my set up https://flows.nodered.org/node/node-red-contrib-sensor-ds18b20 I’m really happy with the results but it displays to 1 decimal point (e.g. 26.1). Is there a way to modify… --- ## [Mqtt out node not able to generate a will message](https://discourse.nodered.org/t/mqtt-out-node-not-able-to-generate-a-will-message/418)
**Author:** [@gl007](https://discourse.nodered.org/u/gl007)\ **Replies:** 5\ **Last updated:** [26 May 2018 15:08 UTC](https://discourse.nodered.org/t/mqtt-out-node-not-able-to-generate-a-will-message/418 "2018-05-26T15:08:39Z")
Hello, I am writing my question here, because I haven’t found anything on the forum that is similar to my problem. I am trying to set a will message (QoS 1, retained) to an mqtt out node in my flow, but apparently the … --- ## [Windows XP 32-bit installation](https://discourse.nodered.org/t/windows-xp-32-bit-installation/375)
**Author:** [@ScooloV](https://discourse.nodered.org/u/ScooloV)\ **Replies:** 2\ **Last updated:** [26 May 2018 11:27 UTC](https://discourse.nodered.org/t/windows-xp-32-bit-installation/375 "2018-05-26T11:27:23Z")
Hello, Since it is possible to install some older versions of Node.js on Windows XP 32-bit, had anyone tried installing node-red on this heavily outdated OS? There is no possibility to update that OS to supported versi… --- ## [ how i use "node-red-contrib-i2c 0.5.2"](https://discourse.nodered.org/t/how-i-use-node-red-contrib-i2c-0-5-2/393)
**Author:** [@gbond](https://discourse.nodered.org/u/gbond)\ **Replies:** 10\ **Last updated:** [26 May 2018 09:20 UTC](https://discourse.nodered.org/t/how-i-use-node-red-contrib-i2c-0-5-2/393 "2018-05-26T09:20:11Z")
can anyone tell me (show example) of how i use “node-red-contrib-i2c 0.5.2” or point me in the right direction as i am complete lost with it so far i can see address 40 & 70 but beyond that not sure what to do i have a… --- ## [Ok, this is a new alert!](https://discourse.nodered.org/t/ok-this-is-a-new-alert/403)
**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\ **Replies:** 1\ **Last updated:** [26 May 2018 07:52 UTC](https://discourse.nodered.org/t/ok-this-is-a-new-alert/403 "2018-05-26T07:52:32Z")
Sorry, but I just got this pop up on my NR: (sorry not good with getting the formatting on the new site working) npm WARN notice \[SECURITY\] concat-with-sourcemaps has the following vulnerability: 1 moderate. Go here fo… --- ## [Help with a simple flow](https://discourse.nodered.org/t/help-with-a-simple-flow/384)
**Author:** [@sjegz](https://discourse.nodered.org/u/sjegz)\ **Replies:** 12\ **Last updated:** [25 May 2018 21:02 UTC](https://discourse.nodered.org/t/help-with-a-simple-flow/384 "2018-05-25T21:02:40Z")
Hi Everyone, I’m really hoping you guys can help. I’m in my final year of a Geology Degree and for a summer project, I want to create a tool that can record temperatures and GPS when I push a button. I have all the hard… --- ## [Link to the Slack team](https://discourse.nodered.org/t/link-to-the-slack-team/382)
**Author:** [@ghayne](https://discourse.nodered.org/u/ghayne)\ **Replies:** 2\ **Last updated:** [25 May 2018 14:49 UTC](https://discourse.nodered.org/t/link-to-the-slack-team/382 "2018-05-25T14:49:28Z")
In the old forum there is a link to Slack, it might be useful to put a link here too. --- ## [If(msg.payload.match(find))](https://discourse.nodered.org/t/if-msg-payload-match-find/265)
**Author:** [@GChapo](https://discourse.nodered.org/u/GChapo)\ **Replies:** 16\ **Last updated:** [25 May 2018 13:26 UTC](https://discourse.nodered.org/t/if-msg-payload-match-find/265 "2018-05-25T13:26:56Z")
Hello, I need a message payload to be the opposite (on or off) based on the current state of a sonoff device. Using (in my case) an mqtt state of tasmota/SonoffLamp1/cmnd/Power I am able to ascertain the current status… --- ## [Controlling gopro camera](https://discourse.nodered.org/t/controlling-gopro-camera/332)
**Author:** [@RogierQ](https://discourse.nodered.org/u/RogierQ)\ **Replies:** 6\ **Last updated:** [25 May 2018 08:28 UTC](https://discourse.nodered.org/t/controlling-gopro-camera/332 "2018-05-25T08:28:35Z")
Looking around the web it surprises me that there are no search results showing any succes on controlling a gopro camera with node-red. Does anyone have experience with this? And is it possible to use this on node-red? … --- ## [Help with a node I made.](https://discourse.nodered.org/t/help-with-a-node-i-made/356)
**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\ **Replies:** 3\ **Last updated:** [25 May 2018 06:26 UTC](https://discourse.nodered.org/t/help-with-a-node-i-made/356 "2018-05-25T06:26:54Z")
This node is similar to one I got help with earlier. That node is still needed and used. But working on my flows, it became obvious I needed another node of similar functions, but not exactly the same. I’m not sure if… --- ## [Unable to visible the tcp node settings(Solved)](https://discourse.nodered.org/t/unable-to-visible-the-tcp-node-settings-solved/329)
**Author:** [@mahendra\_ms](https://discourse.nodered.org/u/mahendra_ms)\ **Replies:** 7\ **Last updated:** [25 May 2018 08:05 UTC](https://discourse.nodered.org/t/unable-to-visible-the-tcp-node-settings-solved/329 "2018-05-25T08:05:37Z")
Hello geeks just getting started using of Node red few days ago on my windows pc, Successfully installed Node red and npm packages every thing is working great for me, but today when i create the new flow with the TCP … --- ## [Need Help with creating Dashboard from Sense Hat data on raspi 3](https://discourse.nodered.org/t/need-help-with-creating-dashboard-from-sense-hat-data-on-raspi-3/346)
**Author:** [@george](https://discourse.nodered.org/u/george)\ **Replies:** 3\ **Last updated:** [24 May 2018 14:37 UTC](https://discourse.nodered.org/t/need-help-with-creating-dashboard-from-sense-hat-data-on-raspi-3/346 "2018-05-24T14:37:55Z")
I watched this tutorial right here : https://www.youtube.com/watch?v=UKv4\_jvPtr4&t=137s and managed to pull it out.I am interested to do something similar to this however not with temperature or humidity etc. but with th… --- ## [Windows/Raspberry LAN name issues following recent Win update](https://discourse.nodered.org/t/windows-raspberry-lan-name-issues-following-recent-win-update/313)
**Author:** [@MattMiller](https://discourse.nodered.org/u/MattMiller)\ **Replies:** 1\ **Last updated:** [24 May 2018 14:08 UTC](https://discourse.nodered.org/t/windows-raspberry-lan-name-issues-following-recent-win-update/313 "2018-05-24T14:08:25Z")
JFI - if you encounter issues in deploying flows to a Pi from a Windows 10 machine - this thread in the Pi forums may (or might be something else or course ) be relevant https://www.raspberrypi.org/forums/viewtopic.php… --- ## [Max call stack exceed error on smooth nodes](https://discourse.nodered.org/t/max-call-stack-exceed-error-on-smooth-nodes/341)
**Author:** [@davidcgu](https://discourse.nodered.org/u/davidcgu)\ **Replies:** 4\ **Last updated:** [24 May 2018 10:51 UTC](https://discourse.nodered.org/t/max-call-stack-exceed-error-on-smooth-nodes/341 "2018-05-24T10:51:51Z")
Good evening All my smooth node functions are giving me on debug error as follows: “RangeError: Maximum call stack size exceeded” 23/5/2018 22:13:56node: cc331629.f54448 msg : error “RangeError: Maximum call stack … --- ## [Beginner help with capturing State changes](https://discourse.nodered.org/t/beginner-help-with-capturing-state-changes/339)
**Author:** [@jbautomaion](https://discourse.nodered.org/u/jbautomaion)\ **Replies:** 1\ **Last updated:** [23 May 2018 20:21 UTC](https://discourse.nodered.org/t/beginner-help-with-capturing-state-changes/339 "2018-05-23T20:21:01Z")
I am just starting to pick up NODE-RED so bear with me. I do have a coding background so I may be over analysing this a little bit :slight\_smile: I am using the Home Assistant module to trigger off some flows. I know … --- ## [Serialport access in Node-Red of IBM](https://discourse.nodered.org/t/serialport-access-in-node-red-of-ibm/335)
**Author:** [@gustavosolano](https://discourse.nodered.org/u/gustavosolano)\ **Replies:** 1\ **Last updated:** [23 May 2018 16:40 UTC](https://discourse.nodered.org/t/serialport-access-in-node-red-of-ibm/335 "2018-05-23T16:40:51Z")
Hello, is it possible to access the raspberry serial ports with the NODE-RD in IBM? \[2018-05-23-112244\_1824x984\_scrot\] --- ## [Maximum Load Level](https://discourse.nodered.org/t/maximum-load-level/310)
**Author:** [@Ksedline](https://discourse.nodered.org/u/Ksedline)\ **Replies:** 4\ **Last updated:** [22 May 2018 21:49 UTC](https://discourse.nodered.org/t/maximum-load-level/310 "2018-05-22T21:49:19Z")
Hello! I need to know answers on these questions. The questions is about maximum load level of Node-Red. Will it works correctly with 10 requests per second? Same question for 20 000 requests per hour? We using this … --- ## [Trouble w/HTTP request node (ENOTFOUND)](https://discourse.nodered.org/t/trouble-w-http-request-node-enotfound/302)
**Author:** [@Joey.Bail](https://discourse.nodered.org/u/Joey.Bail)\ **Replies:** 6\ **Last updated:** [22 May 2018 18:32 UTC](https://discourse.nodered.org/t/trouble-w-http-request-node-enotfound/302 "2018-05-22T18:32:28Z")
I am running into an error with the HTTP Request node in Node-RED. I am following this tutorial step-by-step, but I am not receiving expected results. Instead, I am seeing an ENOTFOUND error when the flow gets to the HTT… --- ## [Where can i find the homeassistant server configuration](https://discourse.nodered.org/t/where-can-i-find-the-homeassistant-server-configuration/305)
**Author:** [@jbautomaion](https://discourse.nodered.org/u/jbautomaion)\ **Replies:** 2\ **Last updated:** [22 May 2018 16:22 UTC](https://discourse.nodered.org/t/where-can-i-find-the-homeassistant-server-configuration/305 "2018-05-22T16:22:46Z")
After importing a couple flows that I found in forums to look at I now have 2 failed Home Assistant connections to IP addresses that do not exist flooding my debug window on every flow. I have verified that there is onl… --- ## [Exporting array to a local file](https://discourse.nodered.org/t/exporting-array-to-a-local-file/278)
**Author:** [@Joey.Bail](https://discourse.nodered.org/u/Joey.Bail)\ **Replies:** 12\ **Last updated:** [22 May 2018 14:08 UTC](https://discourse.nodered.org/t/exporting-array-to-a-local-file/278 "2018-05-22T14:08:51Z")
I am having extreme difficulty exporting information from Node-RED to a file on my local drive. To give some context, I am reading information from an external sensor into Node-RED, and I am trying to export that informa… --- ## [Exporting nodered to home assistant yaml](https://discourse.nodered.org/t/exporting-nodered-to-home-assistant-yaml/270)
**Author:** [@david\_c](https://discourse.nodered.org/u/david_c)\ **Replies:** 8\ **Last updated:** [22 May 2018 13:52 UTC](https://discourse.nodered.org/t/exporting-nodered-to-home-assistant-yaml/270 "2018-05-22T13:52:10Z")
Hi. new to nodered so be patient please. I have it installed and running on a Rpi with Hasio. When I drag the nodes into the working area and deploy, how do I get the code into Hasio with the correct formatting, spaces… --- ## [Checking for stable message before forwarding](https://discourse.nodered.org/t/checking-for-stable-message-before-forwarding/271)
**Author:** [@dilby](https://discourse.nodered.org/u/dilby)\ **Replies:** 2\ **Last updated:** [22 May 2018 09:07 UTC](https://discourse.nodered.org/t/checking-for-stable-message-before-forwarding/271 "2018-05-22T09:07:05Z")
Hi, I have a node red sensor input that I want to check is stable for 1min before forwarding on. I can’t find a simple way to do this. My use-case is that I have a location beacon that shows I’m either home or not home… --- ## [Sharing information between auth callback and nodered node](https://discourse.nodered.org/t/sharing-information-between-auth-callback-and-nodered-node/292)
**Author:** [@angelo](https://discourse.nodered.org/u/angelo)\ **Replies:** 0\ **Last updated:** [22 May 2018 08:41 UTC](https://discourse.nodered.org/t/sharing-information-between-auth-callback-and-nodered-node/292 "2018-05-22T08:41:52Z")
Sorry for cross-posting :confused: I hope this is the right session I’ve this need: I’m using passport + openid-connect to enable access to the nodered. Everything works smooth and i’ve been able also to wrote a callbac… --- ## [Deduct old payload from new payload](https://discourse.nodered.org/t/deduct-old-payload-from-new-payload/259)
**Author:** [@Marcusrs](https://discourse.nodered.org/u/Marcusrs)\ **Replies:** 4\ **Last updated:** [21 May 2018 22:00 UTC](https://discourse.nodered.org/t/deduct-old-payload-from-new-payload/259 "2018-05-21T22:00:40Z")
Hi, I am currently getting a payload that is perfectly fine to further use, but I would also like to deduct the previous payload Ideally something like payload=new.payload-old.payload Is this easily done in a functio… [Previous page](https://discourse.nodered.org/c/general/7.md?page=966) [Next page](https://discourse.nodered.org/c/general/7.md?page=968)