[solved]Problem writing serial strings - Raspberry Pi Forums

using python 3 want send serial string raspberry pi arduino that's running sinewave generator. works fine

code: select all

ser = serial.serial('/dev/ttyusb0', timeout = 1) ser.write(b'200')

need frequency variable

code: select all

f = '200' # raises error ser.write(f) # sends garbage ser.write(b'f')

doing wrong?

you have encode it, first convert number string. can like
str(f).encode()
python2 did lot of things 'automatically' ok of time frustrating!

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