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upm/docs/knownlimitations.md

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Known Limitations {#knownlimitations}

Some sensors do not work seamlessly with a specific board. This means that they are either incompatible or work only under specific settings. This is a list of such sensors and known workarounds if they exist.

Grove Sensors

  • Grove I2C Touch Sensor v1.3 is incompatible with the Intel Edison using the Arduino board, but will work with the Mini-breakout if supplied with at least 4V. Revision v1.2 works well on all Intel boards.
  • Grove Nunchuck only works with the Intel Galileo boards and is unusable on the Intel Edison boards.
  • Grove 3-Axis Digital Gyroscope (ITG-3200) is not compatible with the Intel Edison Arduino board but will work with the Mini-breakout.
  • Grove 3-Axis Digital Accelerometer (ADXL345) only works with the Intel Edison Arduino board when powered from the 3.3V line.
  • Grove 96x96 OLED Display will not work on the Intel Edison with Arduino breakout.
  • Grove 128x64 OLED Display will not work on the Intel Edison with Arduino breakout.
  • Grove Barometer (BMP085) has an unstable connection on the Intel Edison using the Arduino breakout and does not run properly.
  • Grove 6-Axis Accelerometer & Compass (LSM303) fails to write to the configuration register properly and returns invalid data.
  • Grove I2C ADC Converter does not show up on the I2C bus on the Intel Edison with the Arduino board.
  • Grove I2C Motor Driver is not compatible with the Intel Galileo due to the inability to change the I2C bus speed to 100 KHz.
  • Grove CO2 Sensor will return zeroed data and is unusable on the Intel Galileo.
  • Grove BLE (HM-11) does not return data on the Intel Galileo board.

Adafruit Sensors

  • Adafruit Motor Shield (1438) is not detected on the I2C bus when connected to the Intel Edison with an Arduino breakout.

Other Sensors

  • MPU9150 might return inaccurate data.

General

Some I2C sensors add too much capacitance to the SDA line of the Intel Edison Arduino breakout board, thus the signal sticks to a logic 1. When this happens, other sensors connected to the I2C bus are unusable. While there is no generic solution for this limitation, in most cases the sensor works on the Intel Edison Mini-breakout. When this board is not an option, the sensor can be sometimes replaced with the same model from a different vendor.