Footurama Package: Sensors

This is the package you want to use for reading sensors.

ftrm-sensors/w1therm

Read temperature sensors from the Dallas 1-wire bus using the w1 driver inside the Linux kernel.

Configuration:

• input: 0.
• output: 1. Target pipe for measured temperatures in degree Celsius.
• sensorSerial: The serial of the sensor to read from. Cf. ls /sys/bus/w1/devices to get a list of detected sensor serials.
• interval: Interval between two readings in milliseconds.
• retries: The number of retries if reading failed. (e.g. invalid CRC) Default: 3.

Example:

// Inject random numbers every second
module.exports = [require('ftrm-sensors/w1therm'), {
	output: 'output-pipe-with-temperature',
	sensorSerial: '10-000802bf5587',
	interval: 30000 // Every 30s
}];

ftrm-sensors/iio

Read sensors using the Linux IIO driver.

Configuration:

• input: 0.
• output: 1. Target pipe for measured values.
• device: The IIO device to read from. Cf. ls /sys/bus/iio/devices to get a list of detected devices.
• channel: The channel to read from. Cf. ls /sys/bus/iio/devices/iio:device?/in_* to get a list of available channels.
• interval: Interval between two readings in milliseconds.
• retries: The number of retries if reading failed. (e.g. invalid CRC) Default: 3.
• convert: A function that converts read data to values: (data) => value. If the given channel type is known, a default convert function is used.

Known channel types:

• 'in_temp_input': Will output temperature in degree Celsius.
• 'in_humidityrelative_input': Will output relative humidity in percent.

Example:

// Inject random numbers every second
module.exports = [require('ftrm-sensors/iio'), {
	output: 'output-pipe-with-temperature',
	device: 'iio:device0',
	channel: 'in_temp_input'
	interval: 30000 // Every 30s
}];