# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=958

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

**Page:** 959

---

## [Sending bit stream on raspberry pi](https://discourse.nodered.org/t/sending-bit-stream-on-raspberry-pi/1728)

<div class="topic-metadata">

**Author:** [@drmacro](https://discourse.nodered.org/u/drmacro)\
**Replies:** 1\
**Last updated:** [21 July 2018 21:24 UTC](https://discourse.nodered.org/t/sending-bit-stream-on-raspberry-pi/1728 "2018-07-21T21:24:15Z")

</div>

Does there exist a library to read data from an ADC083x series analog to digital converter. Basically the ADC083x uses a simple serial bit stream to read the analog data. I guess I can bit bang it with GPIO, but I'm wo…

---

## [Error handling examples or discussion](https://discourse.nodered.org/t/error-handling-examples-or-discussion/1726)

<div class="topic-metadata">

**Author:** [@drmacro](https://discourse.nodered.org/u/drmacro)\
**Replies:** 1\
**Last updated:** [21 July 2018 17:58 UTC](https://discourse.nodered.org/t/error-handling-examples-or-discussion/1726 "2018-07-21T17:58:11Z")

</div>

I've done a few searches here and on the web for examples of using the catch and other error handling without much luck. Anyone have any pointers to good reading or examples?

---

## [Client calling HTTP POST getting timeout after RESPONSE](https://discourse.nodered.org/t/client-calling-http-post-getting-timeout-after-response/1634)

<div class="topic-metadata">

**Author:** [@tallbloke](https://discourse.nodered.org/u/tallbloke)\
**Replies:** 6\
**Last updated:** [19 July 2018 22:04 UTC](https://discourse.nodered.org/t/client-calling-http-post-getting-timeout-after-response/1634 "2018-07-19T22:04:04Z")

</div>

Hi, I have a simple node flow that takes an HTTP POST in, does some stuff and then returns its results in the HTTP RESPONSE. To investigate this problem I have short-circuited the 'does some stuff' step, so basically i…

---

## [Two loops with output](https://discourse.nodered.org/t/two-loops-with-output/1696)

<div class="topic-metadata">

**Author:** [@lucky4ever2](https://discourse.nodered.org/u/lucky4ever2)\
**Replies:** 5\
**Last updated:** [19 July 2018 20:18 UTC](https://discourse.nodered.org/t/two-loops-with-output/1696 "2018-07-19T20:18:42Z")

</div>

var i; var j; var nr = 1; for (i = 0; i \< msg.payload.TripList.Trip.length; i++) { output = 'Verbindung ' + nr++; for (j = 0; j \< msg.payload.TripList.Trip\[i\].LegList\[0\].Leg.length; j++) { output += "\\r\\n-----\\r…

---

## [Inventory control system (stock control system)](https://discourse.nodered.org/t/inventory-control-system-stock-control-system/1639)

<div class="topic-metadata">

**Author:** [@cgrnl](https://discourse.nodered.org/u/cgrnl)\
**Replies:** 9\
**Last updated:** [19 July 2018 19:23 UTC](https://discourse.nodered.org/t/inventory-control-system-stock-control-system/1639 "2018-07-19T19:23:22Z")

</div>

Subject: Automatıc Inventory Control System Hi guys, I'm working in a glass factory as a Mechanical Maintenance Engineer. I have a Raspberry Pi 3 B at home and having some projects. But in the factory I'm planning to b…

---

## [Array Value Backfeeding Across Function Blocks](https://discourse.nodered.org/t/array-value-backfeeding-across-function-blocks/1700)

<div class="topic-metadata">

**Author:** [@zacharyalan09](https://discourse.nodered.org/u/zacharyalan09)\
**Replies:** 2\
**Last updated:** [19 July 2018 19:02 UTC](https://discourse.nodered.org/t/array-value-backfeeding-across-function-blocks/1700 "2018-07-19T19:02:58Z")

</div>

Hi folks, I'm stumped. I created a function block that is intended to take an input message and count the number of times a value in a certain bin is received. This block seems to be working correctly. As values are re…

---

## [HTTP Get for each item in array](https://discourse.nodered.org/t/http-get-for-each-item-in-array/1625)

<div class="topic-metadata">

**Author:** [@sjp770](https://discourse.nodered.org/u/sjp770)\
**Replies:** 11\
**Last updated:** [19 July 2018 08:53 UTC](https://discourse.nodered.org/t/http-get-for-each-item-in-array/1625 "2018-07-19T08:53:06Z")

</div>

So I have an API that I am requesting JSON data from, and it returns an array or 60 or so site names with descriptions. I can access a single site name like so: msg.payload.data\[3\].name but what I need to do is the foll…

---

## [Replace hardware timer with software timer](https://discourse.nodered.org/t/replace-hardware-timer-with-software-timer/1666)

<div class="topic-metadata">

**Author:** [@arneym](https://discourse.nodered.org/u/arneym)\
**Replies:** 6\
**Last updated:** [18 July 2018 17:27 UTC](https://discourse.nodered.org/t/replace-hardware-timer-with-software-timer/1666 "2018-07-18T17:27:29Z")

</div>

I have an LED that flashes every 1/2 second. I do not want to send anything to a debug unless the LED stays solid for at least 1.5 seconds. Any help would be greatly appreciated. Thanks, Mike

---

## [How to filter out every second MQTT-trigger-event?](https://discourse.nodered.org/t/how-to-filter-out-every-second-mqtt-trigger-event/1664)

<div class="topic-metadata">

**Author:** [@Kin](https://discourse.nodered.org/u/Kin)\
**Replies:** 4\
**Last updated:** [18 July 2018 16:02 UTC](https://discourse.nodered.org/t/how-to-filter-out-every-second-mqtt-trigger-event/1664 "2018-07-18T16:02:11Z")

</div>

Hi, I'm new here :slight\_smile: (sorry, english is not my native language) I got a "special" question about the possibility of filtering out every second trigger-event from an MQTT-input-node. Why?/Background: I recre…

---

## [CATCH node. Does it really help?](https://discourse.nodered.org/t/catch-node-does-it-really-help/1644)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 12\
**Last updated:** [18 July 2018 12:51 UTC](https://discourse.nodered.org/t/catch-node-does-it-really-help/1644 "2018-07-18T12:51:38Z")

</div>

Ok, originally I was a bit confused about the CATCH node and why it only had an OUTPUT, but then it dawned on me. It catches errors (by magic) and sends the report to the output node. This sounds great! I can use it …

---

## [Get data out of object](https://discourse.nodered.org/t/get-data-out-of-object/1657)

<div class="topic-metadata">

**Author:** [@NickB](https://discourse.nodered.org/u/NickB)\
**Replies:** 6\
**Last updated:** [18 July 2018 11:41 UTC](https://discourse.nodered.org/t/get-data-out-of-object/1657 "2018-07-18T11:41:38Z")

</div>

This should be quite easy, but I don't see what's going wrong. I receive an object. In this object you have the element 'Label' and 'CurrState'. When labels has the value Sensor and Currstate is True, I just want to pa…

---

## [Help with PID tuning!](https://discourse.nodered.org/t/help-with-pid-tuning/1400)

<div class="topic-metadata">

**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 49\
**Last updated:** [18 July 2018 09:15 UTC](https://discourse.nodered.org/t/help-with-pid-tuning/1400 "2018-07-18T09:15:57Z")

</div>

@Colin as discussed in another thread, I would be grateful if you could advise me how best to tune the node-red-contrib-pid node. My settings are; Proportional band = 5 Integral time = 3600 Derivative time = 1800 Initi…

---

## [Where Did All the Schedule/Timer Nodes Go?](https://discourse.nodered.org/t/where-did-all-the-schedule-timer-nodes-go/1653)

<div class="topic-metadata">

**Author:** [@TheSauce](https://discourse.nodered.org/u/TheSauce)\
**Replies:** 2\
**Last updated:** [18 July 2018 07:47 UTC](https://discourse.nodered.org/t/where-did-all-the-schedule-timer-nodes-go/1653 "2018-07-18T07:47:12Z")

</div>

I'm trying to figure out what happened to all of the schedule/timer nodes. Search for "schedule" or "timer" in the flows section doesn't return any nodes other than node-red-contrib-mytimeout. I have seen nodes in the …

---

## [Contrib-fs-ops Missing?](https://discourse.nodered.org/t/contrib-fs-ops-missing/1648)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [18 July 2018 06:00 UTC](https://discourse.nodered.org/t/contrib-fs-ops-missing/1648 "2018-07-18T06:00:35Z")

</div>

On one of my machines I have that installed. I want to put it on another machine. I go to: Library and enter fs-ops. Nothing. I am sure I did get it from there with the other machine and not via github. Just askin…

---

## [Still can't install openzwave for Node Red](https://discourse.nodered.org/t/still-cant-install-openzwave-for-node-red/1205)

<div class="topic-metadata">

**Author:** [@SteveMann](https://discourse.nodered.org/u/SteveMann)\
**Replies:** 4\
**Last updated:** [18 July 2018 04:15 UTC](https://discourse.nodered.org/t/still-cant-install-openzwave-for-node-red/1205 "2018-07-18T04:15:06Z")

</div>

I hate to repost, but my last plea for help went off-topic. 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 e…

---

## [Helpful criticism requested](https://discourse.nodered.org/t/helpful-criticism-requested/1435)

<div class="topic-metadata">

**Author:** [@Backup](https://discourse.nodered.org/u/Backup)\
**Replies:** 44\
**Last updated:** [17 July 2018 23:32 UTC](https://discourse.nodered.org/t/helpful-criticism-requested/1435 "2018-07-17T23:32:31Z")

</div>

I'm new to node-red and sorta new to javascript and would appreciate any helpful criticism concerning best practices. This function stores sensor data in a context variable every 5 seconds then at one minute timer ticks…

---

## [Working with Date and Time](https://discourse.nodered.org/t/working-with-date-and-time/1616)

<div class="topic-metadata">

**Author:** [@dedynobre](https://discourse.nodered.org/u/dedynobre)\
**Replies:** 9\
**Last updated:** [17 July 2018 21:45 UTC](https://discourse.nodered.org/t/working-with-date-and-time/1616 "2018-07-17T21:45:14Z")

</div>

Hi! I have a field in the dashboard called Time League and Other Field called Time Off, both of type time. You can compare if the clock time is the same as the Time or Time node Turns it off to perform an action. I've…

---

## [Start of Node Red stalling](https://discourse.nodered.org/t/start-of-node-red-stalling/1603)

<div class="topic-metadata">

**Author:** [@gadjet](https://discourse.nodered.org/u/gadjet)\
**Replies:** 12\
**Last updated:** [17 July 2018 20:27 UTC](https://discourse.nodered.org/t/start-of-node-red-stalling/1603 "2018-07-17T20:27:05Z")

</div>

Hi, I put together a new node red server on a Pi yesterday and all went well apart from a couple of times it seems to hang when starting node red, i looks like it's stopping just after connecting to the Cloud MQTT serve…

---

## [Sub flows ? grouping of nodes, input output](https://discourse.nodered.org/t/sub-flows-grouping-of-nodes-input-output/1610)

<div class="topic-metadata">

**Author:** [@mako](https://discourse.nodered.org/u/mako)\
**Replies:** 3\
**Last updated:** [17 July 2018 09:51 UTC](https://discourse.nodered.org/t/sub-flows-grouping-of-nodes-input-output/1610 "2018-07-17T09:51:55Z")

</div>

Hi Nick. Im not big coder and thats why node red works well for me, i love it ! My question is, i have for example, A Modbus node wired to function node with a few lines of codes, then wired to an Mqtt node. Is it po…

---

## [File writing with the file node](https://discourse.nodered.org/t/file-writing-with-the-file-node/1585)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 13\
**Last updated:** [17 July 2018 07:58 UTC](https://discourse.nodered.org/t/file-writing-with-the-file-node/1585 "2018-07-17T07:58:48Z")

</div>

(Yeah, sorry, but I don't get it either) Ok, next/latest problem that has me stumped. I want to write to a file (append) in the defined httppublic directory. (or what ever it is called - but it is set) This is the co…

---

## [Is node-red-contrib-bigstatus being maintained?](https://discourse.nodered.org/t/is-node-red-contrib-bigstatus-being-maintained/1594)

<div class="topic-metadata">

**Author:** [@drmibell](https://discourse.nodered.org/u/drmibell)\
**Replies:** 2\
**Last updated:** [16 July 2018 22:18 UTC](https://discourse.nodered.org/t/is-node-red-contrib-bigstatus-being-maintained/1594 "2018-07-16T22:18:08Z")

</div>

Can anyone tell me whether the node-red-contrib-bigstatus node (or any of the other "big" nodes) is still being maintained? The author does not seem to have been very active lately. I raised an issue against node-red-con…

---

## [MQTT Route to Certificate Error](https://discourse.nodered.org/t/mqtt-route-to-certificate-error/1612)

<div class="topic-metadata">

**Author:** [@E.Strobel](https://discourse.nodered.org/u/E.Strobel)\
**Replies:** 4\
**Last updated:** [16 July 2018 18:34 UTC](https://discourse.nodered.org/t/mqtt-route-to-certificate-error/1612 "2018-07-16T18:34:14Z")

</div>

I am having trouble getting the MQTT ouput block to connect to Amazon Web Services. It will go back and forth between "connecting" and "disconnected". Does anyone have any experience using AWS? I have tried looking for s…

---

## [Button question about "remembering" state](https://discourse.nodered.org/t/button-question-about-remembering-state/1600)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 4\
**Last updated:** [16 July 2018 16:38 UTC](https://discourse.nodered.org/t/button-question-about-remembering-state/1600 "2018-07-16T16:38:47Z")

</div>

This is a tricky one which has just come to light for me. See flow. The idea is that the "LED" can be turned on/off but pressing the on or off button. Fair enough. Here it is simple: all on one machine and on one sc…

---

## [Node-red-contrib-google-action on Bluemix](https://discourse.nodered.org/t/node-red-contrib-google-action-on-bluemix/1607)

<div class="topic-metadata">

**Author:** [@michaelblight](https://discourse.nodered.org/u/michaelblight)\
**Replies:** 2\
**Last updated:** [16 July 2018 10:20 UTC](https://discourse.nodered.org/t/node-red-contrib-google-action-on-bluemix/1607 "2018-07-16T10:20:51Z")

</div>

Has anybody successfully used node-red-contrib-google-action on Bluemix (IBM Cloud)? I followed the instructions and it seems to have killed my Bluemix instance - suddenly I started getting 404 errors. It sets up a web s…

---

## [Detection the earthquake](https://discourse.nodered.org/t/detection-the-earthquake/1601)

<div class="topic-metadata">

**Author:** [@quangminh0243](https://discourse.nodered.org/u/quangminh0243)\
**Replies:** 4\
**Last updated:** [16 July 2018 06:44 UTC](https://discourse.nodered.org/t/detection-the-earthquake/1601 "2018-07-16T06:44:16Z")

</div>

Hi guys, Im a new. Give me an advise about to making the program that detect the earthquake. Thanks.

---

## [Integrate the text receiving by api call to IBM voice gateway](https://discourse.nodered.org/t/integrate-the-text-receiving-by-api-call-to-ibm-voice-gateway/1599)

<div class="topic-metadata">

**Author:** [@sampath6789](https://discourse.nodered.org/u/sampath6789)\
**Replies:** 0\
**Last updated:** [16 July 2018 03:17 UTC](https://discourse.nodered.org/t/integrate-the-text-receiving-by-api-call-to-ibm-voice-gateway/1599 "2018-07-16T03:17:52Z")

</div>

I have a API which gives a particular text when we make a request to it. I have already implemented that sending request and receiving response by node-red nodes(inject/ change/ http request) I have already created an …

---

## [Http POST formula help](https://discourse.nodered.org/t/http-post-formula-help/1589)

<div class="topic-metadata">

**Author:** [@BlinkScooby](https://discourse.nodered.org/u/BlinkScooby)\
**Replies:** 2\
**Last updated:** [15 July 2018 23:50 UTC](https://discourse.nodered.org/t/http-post-formula-help/1589 "2018-07-15T23:50:14Z")

</div>

Hey guys I am in need of a little help. So I have a project that has a web interface from 2007. it's very insecure and what I have done is sniff the packets on it and have been able to replicate login, turn on, turn off,…

---

## [Flows.nodered.org lists node's older version instead of latest](https://discourse.nodered.org/t/flows-nodered-org-lists-nodes-older-version-instead-of-latest/1142)

<div class="topic-metadata">

**Author:** [@PKGeorgiev](https://discourse.nodered.org/u/PKGeorgiev)\
**Replies:** 5\
**Last updated:** [15 July 2018 23:29 UTC](https://discourse.nodered.org/t/flows-nodered-org-lists-nodes-older-version-instead-of-latest/1142 "2018-07-15T23:29:07Z")

</div>

Hi, Recently node-red-contrib-norelite has been updated to version 2.6.1 (2.6.0 was published 2 days ago): npmjs also seem to be updated: But flows.nodered.org shows it as version 2.5.0: What could be the probl…

---

## [Text node not displaying title and payload same time](https://discourse.nodered.org/t/text-node-not-displaying-title-and-payload-same-time/1581)

<div class="topic-metadata">

**Author:** [@BlinkScooby](https://discourse.nodered.org/u/BlinkScooby)\
**Replies:** 5\
**Last updated:** [15 July 2018 14:09 UTC](https://discourse.nodered.org/t/text-node-not-displaying-title-and-payload-same-time/1581 "2018-07-15T14:09:42Z")

</div>

Hey guys. I am a bit perplexed on my UI text node. I have a Text node that doesn't display both things that I have set. So I have a MQTT message that gets put into json then i filter out only a name of the MQTT. It then…

---

## [Stop full flow with node](https://discourse.nodered.org/t/stop-full-flow-with-node/1584)

<div class="topic-metadata">

**Author:** [@koos147](https://discourse.nodered.org/u/koos147)\
**Replies:** 0\
**Last updated:** [15 July 2018 12:00 UTC](https://discourse.nodered.org/t/stop-full-flow-with-node/1584 "2018-07-15T12:00:17Z")

</div>

Hi, I have a flow with a lot of waits. the full flow takes up to an hour. (and that is exactly what it should do) sometimes by accident the flow starts. and i need to wait the full hour to undo all steps. I was thinki…

[Previous page](https://discourse.nodered.org/c/general/7.md?page=957)

[Next page](https://discourse.nodered.org/c/general/7.md?page=959)