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1 answer
186 views

How to identify this IC FG97

I'm trying to identify an IC labeled FG97 1847 17145. It is a 16-pin SMD.
-1 votes
1 answer
521 views

Touch IC TTP223 hangs at 5V after working

I used a TTP223 IC operating on 5 V. I use the touch IC output (when high) to turn on the LED and (when low) to dim the LED. The LED is operated by the external 5 V. It uses only the touch IC output ...
0 votes
1 answer
107 views

RaspberryPi touch sensor using transistor

I built the following circuit. When I touch the rogue transistor base wire and GPIO is outputting, the LED lights up (still not quite sure why, so if someone could explain this, that'd be helpful, too....