# Famous ADC Error but can't work out the fault

**URL:** <https://klipper.discourse.group/t/famous-adc-error-but-cant-work-out-the-fault/10809>\
**Category:** General Discussion\
**Created:** [October 3, 2023, 12:39pm UTC](https://klipper.discourse.group/t/famous-adc-error-but-cant-work-out-the-fault/10809 "2023-10-03T12:39:09Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Behold81](https://avatars.discourse-cdn.com/v4/letter/b/8e7dd6/32.png) [@Behold81](https://klipper.discourse.group/u/Behold81)\
**Post date:** [October 3, 2023, 12:39pm UTC](https://klipper.discourse.group/t/famous-adc-error-but-cant-work-out-the-fault/10809/1 "2023-10-03T12:39:09Z")

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### Basic Information:

Printer Model: SP5  
 MCU / Printerboard: SKR2  
 `klippy.log`

### Describe your issue:

Printer was being setup for a new camera and on a restart it just failed to load with the ADC error. the logs show my temps are in range unless Im reading it wrong.  
[klippy (1).zip](https://klipper.discourse.group/uploads/short-url/qbG0d5DqQwhThHhYqRnoEqK8XT.zip) (1.5 MB)

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<div class="post-metadata">

**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\
**Post date:** [October 3, 2023, 1:39pm UTC](https://klipper.discourse.group/t/famous-adc-error-but-cant-work-out-the-fault/10809/2 "2023-10-03T13:39:37Z")

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```auto
mcu_temp: temp=-2.6

```

vs.

```auto
[temperature_sensor mcu_temp]
sensor_type = temperature_mcu
min_temp = 10
max_temp = 100

```

Although I have no clue, why it should read -2.6°C.  
Maybe set `min_temp = -10` and watch it. Could be some initialization glitch.

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<div class="post-metadata">

**Author:** ![Behold81](https://avatars.discourse-cdn.com/v4/letter/b/8e7dd6/32.png) [@Behold81](https://klipper.discourse.group/u/Behold81)\
**Post date:** [October 3, 2023, 2:11pm UTC](https://klipper.discourse.group/t/famous-adc-error-but-cant-work-out-the-fault/10809/3 "2023-10-03T14:11:16Z")

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Thank you. Not sure why it’s reporting so low.

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<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/klipper/original/1X/64419bf2aac6639e6ef5cef200dcd456b0a01ac3.png) [@system](https://klipper.discourse.group/u/system)\
**Post date:** [December 2, 2023, 2:11pm UTC](https://klipper.discourse.group/t/famous-adc-error-but-cant-work-out-the-fault/10809/4 "2023-12-02T14:11:23Z")

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