giraffe42

Adding series resistors solved the problem! On an oscilloscope, I can see a lot of ringing that is cleaned up by the series resistor. Using a resistor as low as 33 Ohms cleaned up the signal a lot and made the connectivity consistent. I had to go...

It's a 5V line used for a another device. It's not used for the AD7147. Thanks! I'll give this a try.

Hello everyone, Summary I am trying to use a Teensy 4.1 to talk over SPI to an AD7147 (a capacitive-to-digital converter (CDC)). However, the connection is inconsistent: the system will fluctuate between receiving the expected data and receiving...