# Canswitchboard V3 - Pullup Resistor for Temperatur Sensor

**URL:** https://community.ecumaster.com/t/canswitchboard-v3-pullup-resistor-for-temperatur-sensor/2407
**Category:** OTHER DEVICES
**Created:** [September 28, 2024, 1:17pm UTC](https://community.ecumaster.com/t/canswitchboard-v3-pullup-resistor-for-temperatur-sensor/2407 "2024-09-28T13:17:40Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![xsd](https://avatars.discourse-cdn.com/v4/letter/x/b5e925/32.png) [@xsd](https://community.ecumaster.com/u/xsd)
#### Post date: [September 28, 2024, 1:17pm UTC](https://community.ecumaster.com/t/canswitchboard-v3-pullup-resistor-for-temperatur-sensor/2407/1 "2024-09-28T13:17:40Z")

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Hey,

Is there a way to enable the CSW V3 Pullup Resistor without the Light Client?

 ![Screenshot_20240928_151420_Adobe Acrobat](https://europe1.discourse-cdn.com/flex013/uploads/ecumaster/original/2X/6/68b1dc6d2395b4124f691cf53bbfaa421d9571df.jpeg)

And if I enable the Pullup Resistor in the CSW V3 what Ohm value I have to put in the Temperatures Sensor Config?

Regards

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### Author: ![xsd](https://avatars.discourse-cdn.com/v4/letter/x/b5e925/32.png) [@xsd](https://community.ecumaster.com/u/xsd)
#### Post date: [October 20, 2024, 7:47pm UTC](https://community.ecumaster.com/t/canswitchboard-v3-pullup-resistor-for-temperatur-sensor/2407/2 "2024-10-20T19:47:30Z")

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Have connected 1kOhm in and configured over the temperature configurator.

I get now readings but I think they are too low.

So my question is, what could be the problem?

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### Author: ![ProperTuningOG](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/propertuningog/32/3481_2.png) [@ProperTuningOG](https://community.ecumaster.com/u/ProperTuningOG)
#### Post date: [October 21, 2024, 7:26pm UTC](https://community.ecumaster.com/t/canswitchboard-v3-pullup-resistor-for-temperatur-sensor/2407/3 "2024-10-21T19:26:42Z")

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Do you have the 20-50k pullup turned on or off in the canswitchboard? You will want it turned off and only use your 1k or a 2.2k pullup. Remember to configure your sender with the correct pullup. If you need help calculating the sensor voltage, you can use the following calculator [Ballenger Motorsports - High Performance Electronics](https://www.bmotorsports.com/shop/static.php/post/tempcalc)

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### Author: ![xsd](https://avatars.discourse-cdn.com/v4/letter/x/b5e925/32.png) [@xsd](https://community.ecumaster.com/u/xsd)
#### Post date: [October 25, 2024, 8:50am UTC](https://community.ecumaster.com/t/canswitchboard-v3-pullup-resistor-for-temperatur-sensor/2407/4 "2024-10-25T08:50:24Z")

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How can I turn the internal resistor off?

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<div class="post-metadata">

### Author: ![ProperTuningOG](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/propertuningog/32/3481_2.png) [@ProperTuningOG](https://community.ecumaster.com/u/ProperTuningOG)
#### Post date: [October 25, 2024, 2:23pm UTC](https://community.ecumaster.com/t/canswitchboard-v3-pullup-resistor-for-temperatur-sensor/2407/5 "2024-10-25T14:23:10Z")

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The resistors are programmable in LightClient