ic2 display problems #arduino ??? #arduino

Bill Watkins
 

Hello,
I have attempted to duplicate Ian Lee’s success. 1) I have latest firmware and manager. 2) tried 0x27 & 0x3F; neither makes a difference. Display manufacturer says 0x27 correct. 3) Checked voltages on bcc, sda, and scl; 4.48, 3.89, & 3.90 respectively.  4) display lights up and separate, new display lights up. No letters in either regardless address used. Unit still works and original display still works with ic2 settings when swapped back.

Anyone???!

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