diff --git a/docs/knownlimitations.md b/docs/knownlimitations.md index b22aa5a3..9ea99f13 100644 --- a/docs/knownlimitations.md +++ b/docs/knownlimitations.md @@ -7,6 +7,11 @@ such sensors and known workarounds if they exist. #### Grove Sensors + * **Grove LCD RGB Backlit** (JHD1313M1) requires 5V and should be used with an + external power supply connected to the board to function properly. Although + some high powered USB ports might be enough, in most cases you will encounter + dropped characters, washed out text and/or failed I2C writes while using USB + power alone. * **Grove I2C Touch Sensor** (MPR121) 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. @@ -35,6 +40,9 @@ such sensors and known workarounds if they exist. 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 Digital Light Sensor** (TSL2561) may have an unstable connection on + the Intel Edison using the Arduino breakout that results in missed I2C reads. + This is usually applicable when the I2C lines are pulled-up to 5V. * **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 due to