# DS18B20 smoothing and PID tuning

**URL:** https://discourse.nodered.org/t/ds18b20-smoothing-and-pid-tuning/1015
**Category:** General
**Created:** [22 June 2018 22:57 UTC](https://discourse.nodered.org/t/ds18b20-smoothing-and-pid-tuning/1015 "2018-06-22T22:57:42Z")
**Posts on this page:** 1
**Showing post:** 116

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### Author: ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [4 July 2018 19:47 UTC](https://discourse.nodered.org/t/ds18b20-smoothing-and-pid-tuning/1015/116 "2018-07-04T19:47:55Z")

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> [@Paul-Reed](#):
>
> I’m currently using your PID, but found that it more stable if I added a smooth node, but of course I do get a delay.

If the process is more stable when you add a smooth node then the loop is not tuned correctly. Could you start a new thread for this rather than get it mixed up with this one? Post a chart showing the temperature (if it is temperature), setpoint and PID output value showing the problem and tell me what PID values you have and details of the sensor and output device.

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_[View the full topic](https://discourse.nodered.org/t/ds18b20-smoothing-and-pid-tuning/1015)._