# GPIO23: Onboard blue LED (used to show MQTT connectivity)
# GPIO16: Onboard relay (bathroom fan)
# GPIO25: Used as output for NTC bridge
-# GPIO32: ADC, midpoint of NTC bridge
+# GPIO34: ADC, midpoint of NTC bridge
#
# The underfloor heating NTC thermistor is connected as follows:
#
# |
# ▯ 10 kΩ fixed resistor
# |
-# --- GPIO24 (ADC)
+# --- GPIO34 (ADC)
# |
# ▯ 10 kΩ NTC under floor
# |
# ⏚ GND
#
# Rather than leaving current flowing through the thermistor at all times and
-# potentially introduicing errors by warming it up, we only turn GPIO25 on
+# potentially introducing errors by warming it up, we only turn GPIO25 on
# when it's time to take a reading.
#
# So we disable the periodic measurement on the ADC sensor, then periodically