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G1000 Switch LED Wiring

Hi everyone, I'm starting to print the parts to assemble a G1000NXI as I looked at the schematics for the wiring it shows that the led for the switches are using 5 ohm resistors in a daisy chain of 3 switches. When I saw the video on YouTube I never saw Karl using resistors in the wiring or the breakout board and just want to confirm that they need to be used because I already got them anyways.

Thanks,

Rolando

7 comments

7 Comments

mytechreview_og

Oct 26, 2022

I have another question. I see that there is a 5v connected to the grounds, Is that actually correct ?? Right now none of my buttons or encoders are working and I haven't connected the 5v because it show that is on the GND. Didn't want to short anything and don't know if the arduino will be fried. Thanks in advance, I'm new to this stuff.

Karl Clarke

Oct 26, 2022

Replying to

Hello,

In this wiring diagram, they are variable potentiometers with the outer legs having 5v/gnd connect with the centre pin being signal.

There is no point connecting either an encoder or pot as, do you really need to adjust the volume of the radio. It can be done, but i saw little point.

mytechreview_og

Oct 26, 2022

Replying to

I'm not using the COM encoder, but I saw this in the diagram and I was wondering if it needed to be connected. I populated all the grounds and the pins but I have no input been register. Example the NAV PUSH, one leg connected to GND and the other one to A5, setup Button with pin A5, uploaded to the arduino, then setup the Microsoft/Generic/Avionics/A1000_PFD_Nav_Push (is check and running).. Nothing happens.

mytechreview_og

Oct 26, 2022

Replying to

Nevermind, got it working .. Some how the breakout board was out a bit and not touching all the pins. Thanks for your help Karl

Karl Clarke

Sep 26, 2022

Yes! The resistors are not used to change the voltage but limit current. This is especially important using the cheap dimmers from ebay. Ideally i used 1 Ohm resistors over 4 Leds connected in series. Trust me when i saw there is nothing worse then blowing all your leds in one go by a simple wirinf mistake or a current surge on inital power application! I have to admit many people have reported they have not used them. I was always taught in my electrical theory, a resirot must always be used with an LED. So I do. Old Skool.

Kind Regards, Karl

mytechreview_og

Sep 27, 2022

Replying to

Thanks Karl ... I'm an old school guy myself, I will definitely have the resistors connected to them. I got the 5 ohm resistors that you have in the diagram, so I will use those instead of the 1 ohm, maybe will connect a few more leds this way they are not too dim.

rrjosito

Mar 14

Replying to

Osea que se conedtan 4led con una resistencia de 5 ohm y s conedtan al pin de 3,3v?

G1000 Switch LED Wiring

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