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nano io shield cause arduino nano V3 to not be recognized

Some people use our nano io shield with arduino nano v3 and it can't be recognized, we looked into the schematic of nano v3, and found out the test pin of ft232 on nano is not connected to gnd. In the datasheet of ft232, it says it must be tied to gnd for normal operation, otherwise the device will appear to fail. So if anyone still have this kind of problem, please connect the test pin of ft232 to gnd. Thank you!


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