How are you powering the shield?
Did you modify the "hello world" sketch at all?
Yes, the two 4.7K resistors are pull-ups on SDA and SCL
adafruitandy wrote:On the Teensy, I am using the power, from the USB (+5 VDC) Vin
adafruitandy wrote:Since Adafruit sells both the Teensy 3.0 and the Adafruit RGB I2C shield then it should be only a matter
of Adafruit hooking your RGB display to the Teensy 3.0 and tweaking the libraries, you designed, for proper operation.
adafruitandy wrote:Please note: I do not have any expensive professional test equipment to root-out this problem.
adafruitandy wrote:Also, you really should provide schematics for your kits.
Does your setup look like this?
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