JoeyStrandnes / NST1001_Arduino-Driver

This is an Arduino implementation of my original AVR driver.

NST1001 Arduino Driver

This is a simple Arduino driver for the NST1001 temperature sensor. (Example below)

This driver utilizes Timer-Counter 1 (TCCR1) to measure the temperature from the sensor.

Overview of functions.

Sensor mode = Normal (single sensor)

Function	Parameters	Comment	Return type
NST1001 (Constructor)	int, char	int = enable pin char = C, F or K. (unit)	void
NST1001 (Constructor)	int	Will default to Celsius.	void
init	-	Starts timer.	void
getTemp	-	Returns temperature.	float

Sensor mode = MultiCast (multiple sensors)

Function	Parameters	Comment	Return type
NST1001 (Constructor)	int array, char	int array = all enable pins. char = C, F or K. (unit)	void
NST1001 (Constructor)	int array	Will default to Celsius.	void
init	-		void
getTemp	int	int = index from the enable pin array	float

Sensor mode = Free-running(single sensor, no additional GPIO)

Function	Parameters	Comment	Return type
NST1001 (Constructor)	char	char = C, F or K. (unit)	void
init	-	Starts timer.	void
getTemp	-	Returns temperature.	float

Supported units

• Celsius (default)
• Kelvin
• Fahrenheit

Examples with connection diagram

Single sensor example

Single sensor example (free-running)

Multicast example

Known issues

Below is and extreme example with "fault detection" removed, this is to illustrate what can happen. The problems rarely occur when fault detection is enabled. But worth keeping in mind.

Taking rapid measurements or drifting clock. The spikes are caused by looping the measurement with zero delay, a minimum delay of 1ms between measurements is required to ensure stability in the system. Instability can also be caused if the system clock significantly drifts.