Im having a bit of trouble with an Arduino Nano 33 iot device and reading analog voltages. In these experiments I'm just feeding in voltage from a battery but there are some voltage spikes of about 0.1 V every so often. When just reading analog voltage values from an Adafruit Trinket that I have these voltage spikes don't exist. Any ideas for why this is and how to mitigate? Data is from two separate Arduino devices- both showing same type of spikes. Thanks.
34.3 KB Views: 12
31.1 KB Views: 12