Turn Notecard LEDs off? They are impacting our sensor

Hardware
1

We have a Notecard embedded in a product that has a very sensitive silicon photomultiplier for measuring fluorescence. But the light from the LEDs on the Notecard is illuminating the sample we are trying to measure and messing up our readings. Can we turn these LEDs off somehow?

2

Low tech and irreversible option :wink:

2 Likes
3

Hi @daterdots,

Unfortunately it’s not possible today to programmatically disable/enable the onboard LEDs on the Notecard. I’ve created a feature request for this though and will keep you posted on any updates.

Thanks,
Rob

4

We have investigated this issue further.

Unfortunately, the red LED that used to indicate a cellular connection is controlled entirely by the modem itself and we have no control over that. The best option would be to remove that LED.
If you were willing to place a significant order (e.g., 1,000 notecards) we could do a custom run for you without the LEDs. In the meantime for testing, you could desolder that LED.

5

Shoot, that’s too bad. For now we have just glob topped them

6

FYI - the ability to disable the onboard LED on the Notecard is now available as of the developer firmware v7.4.1 release:

{
  "req": "card.io",
  "mode": "+dark"
}
1 Like