# Node-red-node-serialport issue

**URL:** <https://discourse.nodered.org/t/node-red-node-serialport-issue/58574>\
**Category:** General\
**Created:** [18 February 2022 05:33 UTC](https://discourse.nodered.org/t/node-red-node-serialport-issue/58574 "2022-02-18T05:33:47Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![Echo](https://avatars.discourse-cdn.com/v4/letter/e/c6cbf5/32.png) [@Echo](https://discourse.nodered.org/u/Echo)\
**Post date:** [18 February 2022 05:33 UTC](https://discourse.nodered.org/t/node-red-node-serialport-issue/58574/1 "2022-02-18T05:33:47Z")

</div>

Hello,  
First time posting so I hope have done this correctly, feel free to point me to the correct location I should be listing this.  
I am having issues with node-red-node-serialport version 0.15.0 on my Raspberry Pi.  
Looking at the forum I am having an issue like this ( [Serial Input - No Response](https://discourse.nodered.org/t/serial-input-no-response/3392) ), but I am on the latest version that I can see.  
Node-red version 2.2.1  
NPM 6.14.16  
OS details  
Description: Debian GNU/Linux 11 (bullseye)  
Release: 11  
Codename: bullseye

I have no error message in Node-red and it is connecting to the port without issue, however I get no output from the serial in node.  
 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/a/b/ab3ed109aa265217e46c78f70644b806b2d1cf20.png)  
I have checked the COM port outside of node-red using minicom and I get an output there.  
 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/1/1/1165d5b63815b2af9b7a76565cba1683c2b6f0a1.png)  
I also noticed that I can send data from node-red to the COM port.  
But for some reason I no longer get any input from node-red serial in node.  
What can I look at to troubleshoot this further.

---

<div class="post-metadata">

**Author:** ![Echo](https://avatars.discourse-cdn.com/v4/letter/e/c6cbf5/32.png) [@Echo](https://discourse.nodered.org/u/Echo)\
**Post date:** [18 February 2022 06:59 UTC](https://discourse.nodered.org/t/node-red-node-serialport-issue/58574/2 "2022-02-18T06:59:33Z")

</div>

I was limited to to images in the main post.  
This is the showing the node-red serial out working.

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/3/7/37aa9e09e3ac16c50ba70979973c29bcdc63aaaf.png)

---

<div class="post-metadata">

**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [18 February 2022 08:07 UTC](https://discourse.nodered.org/t/node-red-node-serialport-issue/58574/3 "2022-02-18T08:07:48Z")

</div>

How have you setup the serial config node?

It could be your serial input is waiting for `\n` but all you transmit is a timestamp number.

---

<div class="post-metadata">

**Author:** ![Echo](https://avatars.discourse-cdn.com/v4/letter/e/c6cbf5/32.png) [@Echo](https://discourse.nodered.org/u/Echo)\
**Post date:** [18 February 2022 09:05 UTC](https://discourse.nodered.org/t/node-red-node-serialport-issue/58574/4 "2022-02-18T09:05:08Z")

</div>

I did the stupid thing of trusting my scanner to stay programmed. It lost its linefeed \r once I fixed that it started working again.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [4 March 2022 09:05 UTC](https://discourse.nodered.org/t/node-red-node-serialport-issue/58574/5 "2022-03-04T09:05:39Z")

</div>

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.