Teensy 2.0 pin 11 analog input?

[A. Williams]

Hi there guys! Quick question! So i need to utilize all supposed 12 analog inputs of my teensy 2.0. However, try as I might, I still can't get pin 11 to function as an analog input as opposed to just outputting to the onboard led. Any help would greatly be appreciated!

 

[A. Williams]

Has no one attempted to use pin 11 for an analog input? Still try as I might, I cannot get it to take input. I have checked the pot I am using with another analog in and it works fine. I have also tested 2 different chips. Is there anything I need to write into the code to turn pin 11 on? any help would be greatly appreciated!

 

[PaulStoffregen]

To use pin 11 with a high-impedance source (like a pot), you'll need to disconnect the LED. The easiest way is to desolder the tiny 1K resistor nearby.

 

[Nantonos]

If pin 11 is driven from a low impedance source, like an op-amp buffer, is that still necessary?

 

[A. Williams]

To use pin 11 with a high-impedance source (like a pot), you'll need to disconnect the LED. The easiest way is to desolder the tiny 1K resistor nearby.

Ah ok. I tried disconnecting the LED, but to no avail. I'll disconnect the resistor as well, thanks!