hyng WROTE:Please try to detach 660 ohm from your circuit, connect 12V source directly to the sensor. Hope this will help.
robosang WROTE:Woh.... capacitive sensor? Great, what is the application?
ober WROTE:Good to see you know how to modify the sample circuit from rotary encoder, at least it is useful .
The code seem to be correct. Maybe the resistor highlighted by hyng should help.
sich WROTE:Hi, have you tried to test the black wire output manually using multimeter? Also no signal change (HIGH <-> LOW)?
kenshih WROTE:the reason why i add the 660 ohm resistor is because the datasheet for the capacitive sensor state that the operating voltage is 12~24V and the current consumption is less than 22mA. if i connect 12V from the power supply directly to the sensor, wouldn't it produce infinite current and fry the sensor? <= learned the lesson after frying a LED...
by connecting it with the 660 ohm, it will only sends in around 19mA of current which is within the accepted range of the capacitor...
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