Problems on analog input of DOIT ESP32 DEVKIT V1
|This is a sample of readings coming from ESP32 without phone connected via Bluetooth, it's interesting to see how the readings fluctuate, and most having in mind that no current sensor has been attached, really we're measuring a static potentiometer output|
|This is a
sample of readings coming from ESP32 just after connect the
phone via Bluetooth and doing no changes at all from the
previous situation, previous screen capture, readings
continue fluctuating, and figures are about 30 units smaller
than without phone, look inside the red circle, and don't forget
we're still measuring a static potentiometer output, and this
can not vary at all, power supply during all tests come from a
regulated power supply, still USB cable remains connected.
This is the scheme used during tests, attaching potentiometer to the sensor input and instead of it.
Click here to unload the Sketch to be used under Arduino environment