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Forum Post: RE: Linux/TSC2003: erroneous X coordinate

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Hello, It is possible for the Z value to be zero, but it seems unlikely this would also coincide with having erroneous X/Y values. Have you tried probing the SCL/SDA pins of the TSC2003 to determine if the I2C communication looks correct? Basically, is the device putting out all zeroes, or is the controller registering all zeros?

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