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jasen jasen is offline
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Default Momentary Hi / Low switch Held High with resistor - How to add LED?

On 2006-07-22, Farce Milverk wrote:
=

best way is to put the led and resistor in parallel with the pull-up
resistor

+--|---[330]---+ T
| | ~~~
+5 +---[10k]-------+-+--o o------+ ground
|
+------ out

led goes on, out goes low, when button pressed


if you want the led to go out use a NC switch and turn the circuit round
the
other way.



I will try this once more tomorrow - I could not get this to work, same
problem.


If it still gives you problems reduce the 10K to 1K.-

Bye.
Jasen