# Serial node doeasnt connect

**URL:** <https://discourse.nodered.org/t/serial-node-doeasnt-connect/24587>\
**Category:** General\
**Created:** [10 April 2020 12:17 UTC](https://discourse.nodered.org/t/serial-node-doeasnt-connect/24587 "2020-04-10T12:17:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sepehr](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@sepehr](https://discourse.nodered.org/u/sepehr)\
**Post date:** [10 April 2020 12:17 UTC](https://discourse.nodered.org/t/serial-node-doeasnt-connect/24587/1 "2020-04-10T12:17:37Z")

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I'm using node-red with windows. I want to connect node-red to my Arduino with serial node. In my Arduino I connect HC-SR04 sensor to measure distance and I want to monitor distance in node-red. I managed node settings like in the pictures. as you see the node doesn't connect.  
meanwhile, I'm new to work with node-red.

 ![1586520877016](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/c/a/ca3225936eee3eafd82327790a37a96169e64310.jpeg) ![Capture](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/8/a/8a5a3760a08e7726e327b0c6350cc654db766804.png)

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [9 June 2020 12:17 UTC](https://discourse.nodered.org/t/serial-node-doeasnt-connect/24587/2 "2020-06-09T12:17:41Z")

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