tsl2591 Wire.endTransmission A4 doesn't work

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hello,

my problem pretty basic hope.

1) have arduino uno , tsl2591 sensor.

2) did wiring described here: https://learn.adafruit.com/adafruit-tsl2591/wiring-and-test

3) run code , single message "starting adafruit tsl2591 test!"

4) use i2c scanner code http://playground.arduino.cc/main/i2cscanner

5) there problem line error = wire.endtransmission(); - execution doesn't pass further

6) step 5 issue related wire between sda (tsl2591) , a4 (arduino uno) - if don't connect them, wire.endtransmission() works, if i2c scanner finishing without finding sensor

question: wrong? tsl2591 sensor damaged or what?

thanks



Arduino Forum > Using Arduino > Sensors > tsl2591 Wire.endTransmission A4 doesn't work


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