Changes

b = ser.read()

b = ser.read()

tik = time.perf_counter()

tik = time.perf_counter()

# show response

# show result, 60Hz/~0.016s 120Hx/~0.008s

print("your timing: {}".format(tik-tok))

print("your timing: {}s".format(tik-tok))

## Cleanup Section

## Cleanup Section