Matrix Orbital Corp

Hello:

Does anyone knows what may cause the resistance between the SCL and ground (i2c connector) to be less than 3 ohms (with device completed disconnected; no power no i2C connection)?

It happened to 2 of 3 GLK12232A-25-SM displays that were connected simultaneously to an Arduino Mega 2560. Cable lengths are 8, 15, and 12' feet for each of the three.

Thanks in advance.

Hello,

Thank you for posting on the forum.

SCL/SDA lines on the GLK12232A-25-SM-GW-VS, although configurable for use as I2C pins, has this mention on the datasheet: "this is not an I2C-bus compliant open-drain pin". Is it possible that you may have connected the SCL lines to either GND or power during run time (without going through pull-up/pull-down's)? This may have caused to damage the SCL line.

Thank you,
Raquel