Lab46 Wiki

The breadboard is the device we will use to build our circuits:

The electrical layout of the breadboard is as follows:

Here's a good video overview of the functionality of a breadboard:

• https://www.youtube.com/watch?v=6WReFkfrUIk

Here is a diagram for a circuit driving one LED, from one GPIO pin:

You are after a circuit that drives four LEDs, each one from a unique GPIO pin.

NOTE: As of 20220908, is not working for the pi 400. See the section below for the pi 400 workaround.

First, we need to download the wiringPi library package:

wget https://project-downloads.drogon.net/wiringpi-latest.deb

Then, we need to install it:

sudo dpkg -i wiringpi-latest.deb

For the pi400, we have to do a slightly different process, but will result in the needed functionality becoming available.

On the pi (doesn't matter where, although probably NOT in your repository; base of home directory works fine):

yourpi~$ git clone https://github.com/WiringPi/WiringPi.git

Then:

yourpi:~$ cd WiringPi
yourpi:~/WiringPi$ 

Finally, build and install it:

yourpi:~/WiringPi$ ./build

Provided there are no apparent errors, close out of that terminal and open a new one, then the gpio tool and related WiringPi functionality should now be available.