What does it mean about 'Button connected to pin 3 and GND

Other Hardware Sensors
1

hi, I am doing the emoji_button.ino project link. I am confused about the 'Button connected to pin 3 and GND.'

Do I need to insert my Nano 33 BLE Sense board into the TinyShield? or use a jumper to connect Pin3 and GND? Which pin is the Pin3? I am not sure. I will appreciate it if anyone could give an idea.

2

As far as I can see the project does not mention the "TinyShield", whatever that is

Connect one button contact to pin D3 of the Nano 33 BLE Sense board and the other to a GND connection on the same board. When the button is pressed pin 3 will be connected to GND and the button press will be detected by

int buttonState = digitalRead(buttonPin);

in the code

The pin numbers are on the reverse of the board
image

3

Thanks.

PIN D3 may be more clear than Pin3.

4

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