Simple Hardware switch debounce:
Post date: May 23, 2015 3:5:43 AM
This is a very easy method to debounce switch if you don't want to use Schmitt trigger circuit or software debounce.
It can be very handy when you want to attach a single switch to one of the arduino interrupt.
Components:
Components:
2 resistor 1k Ohm
1 micro switch
1 capacitor 10 Micro F
1 transistor BC547 or equivalent.
Schematic:
Schematic:
Source: http://www.ecs.umass.edu/ece/m5/tutorials/switch_debounce_tutorial.html
Simple Hardware switch debounce Version 2.
Simple Hardware switch debounce Version 2.
Thanks to Aleksandar Popovic to point out the default of the diagram above: discharge of the capacitor when the switch is pressed.
Adding 1 diode and 1 resistor solve the problem.
Components:
Components:
3 resistor 1k Ohm
1 micro switch
1 capacitor 10 Micro F
1 transistor BC547 or equivalent.
1 diode type 1N4007
Schematic:
Schematic:
