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Update analog-read-pin.md

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Jonathan Protzenko 2016-07-21 16:36:33 -07:00 committed by GitHub
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docs/reference/pins/analog-read-pin.md
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@ -28,9 +28,7 @@ basic.forever(() => {
#### ~hint
If you are using **analog read pin** with another micro:bit
running **analog write pin**, it is a good idea to check
**analog read pin** many times and then take an average.
If you are using **analog read pin** with another micro:bit running **analog write pin**, then things can get tricky. Remember that the micro:bit that runs **analog set pin** writes 0's and 1's at a very high frequency to achieve an average of the desired value. Sadly, if you try to read that average from another micro:bit, then the micro:bit will either read 0 or 1023. You could try to read a higher number of values (e.g. a million) in a loop, then computer then average. Alternatively, you can plug in a capacitor in-between the two micro:bits.
#### ~