Question about wiring 5v led push button to Leo Bodnar BBI-32

[Mashmideus]

i want to build my first button box, i am using Leo Bodnar BBI-32 and those NO\NC 5v metal momentary illuminated push buttons (with led light). i tried to figure out how to wire them, i want the led light to be always on, and the buttons will work only when i click on them.
this will work?
thank you!

 

[Neilski]

Two things to check out:
Firstly, while the BBI-32 product page is a bit light on info, it does show a picture of switches being connected between the input and "GND". This implies that the inputs have pull-up resistors (a very common approach). So I reckon you would want to adjust your scheme to connect C to GND and NO to the button input.
Secondly, you don't provide a link for the buttons you use, so I would just recommend care about how you hook them up - they might need a current-limiting resistor in series (unless that's taken care of internally).

 

[Mashmideus]

thank you

 

[Mashmideus]

Two things to check out:
Firstly, while the BBI-32 product page is a bit light on info, it does show a picture of switches being connected between the input and "GND". This implies that the inputs have pull-up resistors (a very common approach). So I reckon you would want to adjust your scheme to connect C to GND and NO to the button input.
Secondly, you don't provide a link for the buttons you use, so I would just recommend care about how you hook them up - they might need a current-limiting resistor in series (unless that's taken care of internally).

thanks for your response!
like this?

this is the buttons web page on aliexpress (mine are 5V )

0.65€ 50% OFF|16/19/22Mm Custom Metalen Knop Schakelaar Start Stop Led Licht Voor Auto Mistschakelaar Motorfiets Zwart/Zilver Waterdicht 12V 24V| | - AliExpress

Smarter Shopping, Better Living! Aliexpress.com

www.aliexpress.com

 

[Neilski]

Yes, I think that should work OK for the switch detection.
For the LEDs, I'm not seeing anything very clear on the product page, but some of the comments suggest that a resistor isn't needed. However, I would personally play it safe and connect a resistor at first, just in case.
If you allow for a forward voltage of say 1.8 V (should be about right for a red LED), and choose say 5 mA for the current, you'd be trying to drop 3.2 V across the resistor (for a total of 5 V) so you'd choose a resistor in the ballpark of 640 ohms. Then you could measure the voltage across the LED (or perhaps it's an LED+resistor combination of course) and if the voltage is significantly higher than 1.8 V then you've probably already got a resistor in there with the LED (and you'll also probably have a pretty dim LED ).

 

[Mashmideus]

Yes, I think that should work OK for the switch detection.
For the LEDs, I'm not seeing anything very clear on the product page, but some of the comments suggest that a resistor isn't needed. However, I would personally play it safe and connect a resistor at first, just in case.
If you allow for a forward voltage of say 1.8 V (should be about right for a red LED), and choose say 5 mA for the current, you'd be trying to drop 3.2 V across the resistor (for a total of 5 V) so you'd choose a resistor in the ballpark of 640 ohms. Then you could measure the voltage across the LED (or perhaps it's an LED+resistor combination of course) and if the voltage is significantly higher than 1.8 V then you've probably already got a resistor in there with the LED (and you'll also probably have a pretty dim LED ).

thank you!