# \[Solved\] Serial node not working in node-red 1.0.2

**URL:** <https://discourse.nodered.org/t/solved-serial-node-not-working-in-node-red-1-0-2/17800>\
**Category:** General\
**Created:** [11 November 2019 15:57 UTC](https://discourse.nodered.org/t/solved-serial-node-not-working-in-node-red-1-0-2/17800 "2019-11-11T15:57:21Z")\
**Posts on this page:** 3\
**Page:** 2

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**Author:** ![dennishvo](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dennishvo/32/2896_2.png) [@dennishvo](https://discourse.nodered.org/u/dennishvo)\
**Post date:** [16 November 2019 19:52 UTC](https://discourse.nodered.org/t/solved-serial-node-not-working-in-node-red-1-0-2/17800/21 "2019-11-16T19:52:45Z")

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Yes, I'm aware of those errors. They have nothing whatsoever to do with the serial port. I have a dozen or so flows in this application but only one performs serial communication.

I've switched back to the Raspberry Pi model 3 B+, where the system boots with a working serial port intermittently, whereas the serial flow on the RPi 4 doesn't work until I redeploy via the editor having only repositioned the node.

What else would you recommend that I try? Again, if I downgrade to NR 0.20.5, everything works as it always has.

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**Author:** ![dennishvo](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dennishvo/32/2896_2.png) [@dennishvo](https://discourse.nodered.org/u/dennishvo)\
**Post date:** [11 February 2020 23:04 UTC](https://discourse.nodered.org/t/solved-serial-node-not-working-in-node-red-1-0-2/17800/23 "2020-02-11T23:04:27Z")

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Update on this issue: Since installing node-red 1.0.3 and the Feb 2020 version of Buster, all of the issues I had been having with the serial port are now resolved, both on the RPi 3B+ and the RPi 4B. Communication works the first time after booting, and it continues to work after several days of testing.

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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:** [25 February 2020 23:04 UTC](https://discourse.nodered.org/t/solved-serial-node-not-working-in-node-red-1-0-2/17800/24 "2020-02-25T23:04:31Z")

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