# Custom thermometer with OID

**URL:** <https://discourse.nodered.org/t/custom-thermometer-with-oid/34393>\
**Category:** General\
**Created:** [17 October 2020 06:47 UTC](https://discourse.nodered.org/t/custom-thermometer-with-oid/34393 "2020-10-17T06:47:22Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![svetlinsem](https://avatars.discourse-cdn.com/v4/letter/s/6bbea6/32.png) [@svetlinsem](https://discourse.nodered.org/u/svetlinsem)\
**Post date:** [17 October 2020 06:47 UTC](https://discourse.nodered.org/t/custom-thermometer-with-oid/34393/1 "2020-10-17T06:47:22Z")

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Hello, first you are an amazing community. I'm new here and I have a case. I'm trying to check the temperature with a custom thermometer and I have the following points, channel, oid, IP, and port. I tried with UDP but without success. If anyone has a similar setup or has an idea of how to do it I will be glad.  
Sorry for my English it's not that good.  
Thanks in advance.

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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:** [17 October 2020 08:54 UTC](https://discourse.nodered.org/t/custom-thermometer-with-oid/34393/2 "2020-10-17T08:54:33Z")

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Welcome to the forum @svetlinsem.

Without some information on the thermometer and what protocol it supports it is difficult to help.

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**Author:** ![Nodi.Rubrum](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/nodi.rubrum/32/107482_2.png) [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Post date:** [18 October 2020 22:11 UTC](https://discourse.nodered.org/t/custom-thermometer-with-oid/34393/3 "2020-10-18T22:11:51Z")

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"OID?"

Is this an SNMP OID?

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**Author:** ![svetlinsem](https://avatars.discourse-cdn.com/v4/letter/s/6bbea6/32.png) [@svetlinsem](https://discourse.nodered.org/u/svetlinsem)\
**Post date:** [19 October 2020 17:34 UTC](https://discourse.nodered.org/t/custom-thermometer-with-oid/34393/4 "2020-10-19T17:34:37Z")

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Hello,  
We use one wire protocol with DS1820 .  
Steps:

1. Open socket
2. Ask in hex (OID and Chanel)
3. Recieve answer in hex.

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<div class="post-metadata">

**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:** [19 October 2020 19:34 UTC](https://discourse.nodered.org/t/custom-thermometer-with-oid/34393/5 "2020-10-19T19:34:59Z")

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So what is the question? What has the 1-wire protocol got to do with sockets?

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<div class="post-metadata">

**Author:** ![svetlinsem](https://avatars.discourse-cdn.com/v4/letter/s/6bbea6/32.png) [@svetlinsem](https://discourse.nodered.org/u/svetlinsem)\
**Post date:** [19 October 2020 19:47 UTC](https://discourse.nodered.org/t/custom-thermometer-with-oid/34393/6 "2020-10-19T19:47:15Z")

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Yes and how to implement in node red.

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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:** [19 October 2020 19:52 UTC](https://discourse.nodered.org/t/custom-thermometer-with-oid/34393/7 "2020-10-19T19:52:28Z")

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How to implement what in node-red? If you search for ds18b20 you will find there are a number of nodes that will access them. I use owserver with my 1-wire devices and then node-red-contrib-owfs to read them.

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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:** [18 December 2020 19:52 UTC](https://discourse.nodered.org/t/custom-thermometer-with-oid/34393/8 "2020-12-18T19:52:31Z")

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