# What do the Notecard LED blink patterns mean?

**URL:** https://discuss.blues.com/t/what-do-the-notecard-led-blink-patterns-mean/62
**Category:** Troubleshooting
**Created:** [December 8, 2020, 3:52pm UTC](https://discuss.blues.com/t/what-do-the-notecard-led-blink-patterns-mean/62 "2020-12-08T15:52:32Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![gwolff](https://avatars.discourse-cdn.com/v4/letter/g/a88e57/32.png) [@gwolff](https://discuss.blues.com/u/gwolff)
#### Post date: [December 8, 2020, 3:52pm UTC](https://discuss.blues.com/t/what-do-the-notecard-led-blink-patterns-mean/62/1 "2020-12-08T15:52:32Z")

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version 20200921.1

# Red LED – Notecard General Processing

| **Pattern** | **Context** | **Additional Description** |
| --- | --- | --- |
| Blink Rate starts slow, and becomes more rapid | Notecard power-up or reset | Notecard is booting and starting its firmware |
| Blink Rate quick: On → Off (may be aperiodic) | Processing JSON Request from Host MCU | Turns on when JSON request is received. Turns off when JSON response is sent |
| Regular blink interval | Device Firmware Update Mode progress | Only happens with the Notecard is in the [DFU mode](https://wireless.dev/reference/notecard-guide#entering-dfu-mode-on-the-notecard) |
| Solid | Error State | Notecard not responsive. Contact Blues Wireless for support. |

# Green LED – Notecard Modem Processing

| **Pattern** | **Context** |
| --- | --- |
| Flicker slowly (200ms High/1800ms Low) | Network searching |
| Flicker slowly (1800ms High/200ms Low) | Idle |
| Flicker quickly (125ms High/125ms Low) | Data transfer is ongoing |
| | |

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### Author: ![abari](https://avatars.discourse-cdn.com/v4/letter/a/edb3f5/32.png) [@abari](https://discuss.blues.com/u/abari)
#### Post date: [February 28, 2023, 12:14am UTC](https://discuss.blues.com/t/what-do-the-notecard-led-blink-patterns-mean/62/2 "2023-02-28T00:14:31Z")

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Is it possible to disable the LED’s?

ie. the idle constant green blinking seems like a waste of power.

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### Author: ![RobLauer](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.blues.com/roblauer/32/1567_2.png) [@RobLauer](https://discuss.blues.com/u/RobLauer)
#### Post date: [March 6, 2023, 2:24pm UTC](https://discuss.blues.com/t/what-do-the-notecard-led-blink-patterns-mean/62/3 "2023-03-06T14:24:23Z")

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Hi @abari,

There is currently no way to disable the onboard LED on the Notecard. However, the power consumption of the LED is minimal and, in a battery-powered device especially, the Notecard should be in `periodic` or `minimum` mode which will lead to the Notecard only flashing in brief intervals when it’s transmitting data.

Rob

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### Author: ![abari](https://avatars.discourse-cdn.com/v4/letter/a/edb3f5/32.png) [@abari](https://discuss.blues.com/u/abari)
#### Post date: [March 6, 2023, 5:46pm UTC](https://discuss.blues.com/t/what-do-the-notecard-led-blink-patterns-mean/62/4 "2023-03-06T17:46:34Z")

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Ah perfect, thanks Rob.

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### Author: ![SSPW](https://avatars.discourse-cdn.com/v4/letter/s/90db22/32.png) [@SSPW](https://discuss.blues.com/u/SSPW)
#### Post date: [January 13, 2024, 5:55pm UTC](https://discuss.blues.com/t/what-do-the-notecard-led-blink-patterns-mean/62/5 "2024-01-13T17:55:45Z")

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I had a regular red blinking LED on my notecard.  
Ended up here, while trying to figure out what it indicated.  
I went away thinking it had something to do with DFU.

I played with the DFU settings and it keep blinking!

I would like to save any Notecard noobs some searching, and add that the red led (on a WBNAW and maybe others) has a short blink regular blink when i am connected to the In-Browser Terminal!