CircuitPython demo showing how to reduce ADC "flickering" when reading potentiometer

code.py

import board
import time
from analogio import AnalogIn

analog_in = AnalogIn(board.A0)
pot_v_9bit = analog_in.value >> 7
pot_v_7bit = pot_v_9bit >> 2

while True:    
    # take a few readings and average them for a tiny bit of filtering
    # analog_in.value is an unsigned, 16 bit value
    pot_readings = []
    pot_sample_count = 15
    for _ in range(pot_sample_count):
        pot_readings.append(analog_in.value >> 7)
        time.sleep(0.001)
    current_pot_v_9bit = round(sum(pot_readings) / pot_sample_count)
    # it tends to flicker between adjacent values, 
    # so safe to move forward once the value changes by a magnitude >= 3
    if (abs(current_pot_v_9bit - pot_v_9bit) >= 3):
        pot_v_9bit = current_pot_v_9bit
        current_pot_v_7bit = current_pot_v_9bit >> 2
        # avoid sending the same value twice
        if (current_pot_v_7bit != pot_v_7bit):
            pot_v_7bit = current_pot_v_7bit
            print("POT adjusted:", pot_v_7bit)