xod/common-hardware@0.30.1

Reads acceleration from an ADXL335 based sensor. Note that concrete ADXL335 instances differ from each other and their output should be adjusted for precise mesearument. By default the values are coarse although reasonable enough to determine shaking and approximate orientation. For an ideally factored accelerometer the outputs are in range ±3ɡ. Possible errors: — Invalid port

Reads analog signal value from analog sensor. Possible errors: — Invalid port

Reads a generic button or another mechanical switch. It is expected that the button is normally high, i.e. it is pulled up with a resistor. The node provides signal debounce with 20 ms settle delay. Possible errors: — Invalid port

Reads temperature and humidity from a DHT11 sensor. Also named RHT01. Possible errors: — Checksum failure — Read timeout — Initialization error — Invalid port

Reads temperature and humidity from a DHT21 or compatible sensor: DHT21, DHT22, DHT33, DHT44, AM2301, HM2301, AM2302, AM2303, RHT02, RHT03, RHT04, RHT05. Possible errors: — Checksum failure — Read timeout — Initialization error — Invalid port

Reads temperature from a DS18B20 sensor. Expects single-drop bus setup, i.e. one thermometer on a port. Possible errors: — Invalid port — Initialization sequence error

Drives a DC motor through H-Bridge IC such as L293 or L298. Possible errors: — Invalid port

Measures distance with HC-SR04 ultrasonic range meter. Outputs infinity on no echo. Possible errors: — Invalid port — Initialization error

Measures sound roundtrip time with HC-SR04 ultrasonic range meter. Outputs infinity on no echo. Possible errors: — Invalid port — Wrong connection

Reads angular velocity from a gyroscope based on L3G4200 IC by STMicroelectronics. It is expected the gyro is connected to the first hardware I²C bus. Possible errors: — Invalid I2C address — Data too long to fit in transmit buffer — Received NACK on transmit of address — Received NACK on transmit of data — Other error — No bytes written. Probably due to buffer overflow — Can't read the value

Reads angular velocity from a gyroscope based on L3GD20H IC by STMicroelectronics. It is expected the gyro is connected to the first hardware I²C bus. Possible errors: — Invalid I2C address — Data too long to fit in transmit buffer — Received NACK on transmit of address — Received NACK on transmit of data — Other error — No bytes written. Probably due to buffer overflow — Can't read the value

Drives a generic single color dimmable LED. The conversion between luminance and LED power is biased so that change in brightness on range 0…1 is percepted more or less uniformly by a human. Possible errors: — Invalid port

Reads acceleration from an accelerometer based on LIS331DLH IC by STMicroelectronics. It is expected the accelerometer is connected to the first hardware I²C bus. Possible errors: — Invalid I2C address — Data too long to fit in transmit buffer — Received NACK on transmit of address — Received NACK on transmit of data — Other error — No bytes written. Probably due to buffer overflow — Can't read the value

Reads acceleration from an accelerometer based on LIS331HH IC by STMicroelectronics. It is expected the accelerometer is connected to the first hardware I²C bus. Possible errors: — Invalid I2C address — Data too long to fit in transmit buffer — Received NACK on transmit of address — Received NACK on transmit of data — Other error — No bytes written. Probably due to buffer overflow — Can't read the value

Reads acceleration from an accelerometer based on LIS3DH IC by STMicroelectronics. It is expected the accelerometer is connected to the first hardware I²C bus. Possible errors: — Invalid I2C address — Data too long to fit in transmit buffer — Received NACK on transmit of address — Received NACK on transmit of data — Other error — No bytes written. Probably due to buffer overflow — Can't read the value

Reads temprature, pressure, altitude from a barometer based on LPS331 chip by STMicroelectronics. Possible errors: — Invalid I2C address — Data too long to fit in transmit buffer — Received NACK on transmit of address — Received NACK on transmit of data — Other error — No bytes written. Probably due to buffer overflow — Can't read the value

Reads values from a generic potentiometer. Basically a thin wrapper around `analog-input` for a simpler learning experience. Possible errors: — Invalid port

Appends lines of text to a file on SD card. Possible errors: — Can't open a file — Initialization failed or no SD card — Can't write data to SD card

Drives a text LCD screen with a PCF8574 or PCA8574 I²C expander module. Usually have a value in range 0x20-0x27 or 0x38-0x3F. Consult LCD/expander documentation to know the exact value. Possible errors: — Invalid I2C address

Drives a digital thermometer based on TMP36 IC. Possible errors: — Invalid port

Drives a text LCD screen with HD44780 chip. Possible errors: — Invalid port