I have a quite old Colorino talking colour and light detector that is flaky
at its job of detecting the right colour. I think it could do with a reset
or calibrating. I used to have a different colour detector that you put the
cap over the detector and pressed a button to calibrate, but this much
smaller one doesn't seem to have such a button and it certainly doesn't have
a cap. Can it be done and if so, how?
Thanks in anticipation.
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