====== ntcReadf() ======

''ntcReadf()'' returns the temperature of an NTC 3950 10kΩ sensor as a floating-point value in ℃.

{{:en-us_commands:reference:ntcreadf.svg?900|ntcReadf command operation flow}}

''float ntcReadf(uint8_t ch)''

===== Commands =====

^ Command ^ Arguments ^ Return Value ^ Operation ^
| ''ntcReadf(ch)'' | ''uint8_t ch'' — MPINO: analog pin number; MPAINO: overall analog input channel number | ''float'' | Returns the temperature of an NTC 3950 10kΩ sensor as a floating-point value in ℃. |


===== Example =====

Connect an X input module to MPAINO-8A8R(T) and select **Analog Input Module → X**. Set CH0 DIP switches NTC and GND to ON, then connect the 10kΩ NTC sensor.

<code cpp>
void setup() {
  Serial.begin(115200);
}

void loop() {
  const float temperature = ntcReadf(0);  // Read the 10kΩ NTC temperature as degrees Celsius.
  Serial.print(F("Temperature: "));
  Serial.println(temperature, 1);
  delay(500);
}
</code>

===== Precautions =====

  * ''ntcRead()'' is based on an NTC 3950, 10kΩ at 25 C sensor.
  * ''ntcReadf()'' divides the ''ntcRead()'' result by ''10.0F'', so its resolution remains ''0.1 C''.
  * Connecting a sensor with a different B value, reference resistance or wiring configuration causes temperature errors.
  * On MPAINO, the temperature is incorrect unless the DIP switch is in NTC mode.
  * On MPAINO, the first call internally initializes only the corresponding analog input module.

===== Built-in Commands in the Same Category =====

  * [[:en-us_commands:reference:ntcread|ntcRead() View detailed description]]
  * [[:en-us_commands:reference:pt100read|pt100Read() View detailed description]]

[[:en-us_commands:builtin|← Built-in Command List]]