from machine import Pin, ADC, DAC, reset
import time

adc = ADC(Pin(34)) # Create an ADC object linked to pin 34
dac = DAC(Pin(25)) # Create av DAC object linked to pin 25
adc.atten(ADC.ATTN_11DB)
dac.write(0)
print("0 volt")
print(adc.read())
time.sleep_ms(3000)

dac.write(128)
print("1.65 volt")
print(adc.read())
time.sleep_ms(3000)

dac.write(255)
print("3.3 volt")
print(adc.read())
time.sleep_ms(3000)
reset()