TypeError: can't convert NoneType to int

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Re: TypeError: can't convert NoneType to int

Post by pythoncoder » Thu Mar 01, 2018 8:34 am

Re the LCD the driver doesn't maintain a cursor position. This is to keep it simple: these displays have only a few characters on each line. They refresh very fast. So a line update requires a string comprising all the text. Your options are either to adapt the driver to maintain a text cursor for each line or to use Python string formatting, e.g.

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lcd[0] = "value:{} {}".format(concentration, "Here I want another string to be displayed")
Regarding your driver, I don't have the hardware device so I can't suggest any reasons why it is returning unexpected values.
Peter Hinch

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Re: TypeError: can't convert NoneType to int

Post by nikhiledutech » Thu Mar 01, 2018 10:20 am

Okay sir

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