Hi,
In my project, I notice a 24kHz anomaly that happens only when the Teensey is powered by the USB on my computer.
I'd like to test my setup using a USB power supply (that can charge a phone), but sadly, my Teensey program does not start.
Why would this be so? When the board is plugged in via a wall wort, a dim red light starts blinking when I press the button, this is in contract to the bright orange led when its powered by the computer? Any ideas?
In my project, I am seeing a 24kHz signal that seems to be noise from the pc. My hope is that this disappears when powered by something cleaner, but I suppose it could also be from the Teensey 4.1 . 2 different Teensey 4.1 show the same 24kHz. But when powered by the PC.
Since I have an SPI bus, this noise might matter in my project. Would a certain sized Cap to ground on the power rail get rid of this noise?
Thanks for any help.
Jeff
In my project, I notice a 24kHz anomaly that happens only when the Teensey is powered by the USB on my computer.
I'd like to test my setup using a USB power supply (that can charge a phone), but sadly, my Teensey program does not start.
Why would this be so? When the board is plugged in via a wall wort, a dim red light starts blinking when I press the button, this is in contract to the bright orange led when its powered by the computer? Any ideas?
In my project, I am seeing a 24kHz signal that seems to be noise from the pc. My hope is that this disappears when powered by something cleaner, but I suppose it could also be from the Teensey 4.1 . 2 different Teensey 4.1 show the same 24kHz. But when powered by the PC.
Since I have an SPI bus, this noise might matter in my project. Would a certain sized Cap to ground on the power rail get rid of this noise?
Thanks for any help.
Jeff