Forem: Whitney Smith

Custom Guitar Pedal

Whitney Smith — Fri, 01 Mar 2024 01:18:01 +0000

Tutorial coming soon! (that was a lie)

Materials

Pi 3b+ Kit $60.00
16GB Micro SD Card $7.48
Screen for Raspberry Pi $39.99
Cheap mechanical keyboard $20.00
Momentary Stomp Switches (10) $25.00
USB Audio Adapter $9.95
22 AWG Stranded Wire $16.95
Volume Potentiometers (2) $10.44
1/4" Jacks (4) $11.75
3.5mm male-to-male stereo cable $5.98
Audio Adapters $9.88
Acrylic Sheets (2) $15.99
Standoffs, 5/8" x 3" (4) $16.95
Aluminum Case 18" x 6" x 13" $39.99
Misc hardware (washers, bolts, etc.)

Total $290.35

Equipment

USB Keyboard
Drill
Drill bits
Soldering Iron
Solder
Flux
Wire strippers
Speaker

Software

Install guitarix via apt.

Update: this is a side project in my never ending list of side projects. At this point I'm going to create a new post for v2 of the pedal.

Here are some pictures anyway:

Setup Barrier Cross-Platform

Whitney Smith — Tue, 05 Dec 2023 17:57:42 +0000

Setup Barrier Cross-Platform

This article explains how to setup Barrier on different platforms. Barrier allows you to use the same mouse and keyboard on different machines.

Barrier repo on Github

How to Install Barrier on Linux

For Ubuntu 20.04 and higher, Linux Mint 20, and current Debian releases, open the terminal and run the following command to install Barrier:

sudo apt install barrier

How to Install Barrier on Windows and Mac OS

For Windows and Mac OS, the latest packages are available to download at the link below:

Releases for Windows and MacOS

Setup Barrier Server and Client

Setup Server

On the server machine, select "Server" and click on "Configure Server."

Make sure you're in the "Screens and links" tab. Configure the layout of your barrier server configuration. To add the client, drag and drop the computer icon on the top right to the corresponding physical location of the machine. Double click on the client to rename the screen name. The screen name must exactly match the screen name on the client machine.

Setup Client

On the client machine, select "Client".

By disabling "Auto config", you can type server IP manually. A dialog will pop-up indicating you connected successfully.

Click "Start". It will automatically connect to the server if available, and prompt you to trust the fingerprint if SSL enabled.

For connecting issues, check the log from menu. As well, you can change the listening port and toggle SSL.

When it's working, on both machines it should say on the bottom "Barrier is running." If it is not working, try clicking "Reload."

Hotkeys

In the "Hotkeys" tab, you can configure keyboard shortcuts to switch screens.

First, click ‘New’ and create a shortcut key.
Second, highlight the key you created.
Click ‘New’ in right to specify an action to perform.

Advanced server settings

You can get optional settings in the "Advanced server settings" page.

Problems Encountered

Errors fetching packages during Linux installation

This is linked to using a non LTS version of Ubuntu called an "End of life version". As those have discontinued support. You can check if your Ubuntu is at the end of life version on this link.

The simplest solution is to do the following two steps:

Backup your sources list

sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup
Open the sources file /etc/apt/sources.list and rename all the instances of us.archive or archive in

http://us.archive.ubuntu.com/ubuntu/

to

http://old-releases.ubuntu.com/ubuntu/

Also do the same for the http://security.ubuntu.com/ubuntu/dists/saucy-security/universe/binary-i386/Packages
Run sudo apt-get update after doing the above.

Security warning: Please update your Ubuntu to an LTS version (to find the current one look into the docs here) as soon as possible, otherwise you won't be getting the latest security patches. The workaround presented in this answer is definitely not a solution that you would deploy on production machines.

Non-US: localized versions may use a different variant (e.g., search for fr.archive.ubuntu.com instead of us.archive.ubuntu.com - change "fr" based on your locale)

"Wayland session not currently fully supported by Barrier"

Restart your Ubuntu system. At the login screen, under the password field, you’ll see a gear icon. Just click on it and you’ll see two options.

The default Ubuntu means it will be using Wayland while Ubuntu on Xorg obviously means it will use Xorg. You can select Ubuntu on Xorg to use Xorg here.

Similarly, you can switch back to Wayland when you feel like it.

Enable Wireless Debugging on Android Device

Whitney Smith — Thu, 26 Oct 2023 20:03:11 +0000

This article explains how to set up wireless debugging to avoid needing a USB cable plugged into an Android Device.

Android Settings

Enable wireless debugging through the Android Settings:

Developer options must be enabled first
a. Go to Settings -> About Tablet -> Software Information
b. Tap Build Number multiple times until you see "You are now in Developer mode!"
Go to Settings -> Developer Options and toggle on Wireless Debugging
Tap Allow in the popup to enable it
Follow steps below for ADB Commands

IDE Plugin

Enable wireless debugging through IDE Plugin:

Install the “ADB Wireless Plugin” in your IDE (Or something similar in name. May be “Android Wifi ADB” for example). Typically you'd use Android Studio but I needed to use Intellij.
Connect device to computer with a USB cable
Connect to device through ADB Wireless Plugin a. The ADB Wireless Plugin menu should show up in the right-side tool menu.
Unplug the USB cable and follow steps below for ADB Commands

ADB Commands

Set up adb so that commands such as `adb logcat` will run:

Connect the device to your computer with a USB cable. Check that USB debugging is working by running adb devices. The device should be listed.
Run adb tcpip 5555
Disconnect the USB cable
Go to the Settings -> About Tablet -> Status to view the IP address of your device
Run adb connect <IP address of device>:5555
Run adb devices again and you should see the device

You can now wirelessly run adb commands!

Forem: Whitney Smith

Custom Guitar Pedal

Materials

Equipment

Software

Setup Barrier Cross-Platform

Setup Barrier Cross-Platform

How to Install Barrier on Linux

How to Install Barrier on Windows and Mac OS

Setup Barrier Server and Client

Setup Server

Setup Client

Hotkeys

Advanced server settings

Problems Encountered

Errors fetching packages during Linux installation

"Wayland session not currently fully supported by Barrier"

Enable Wireless Debugging on Android Device

Android Settings

Enable wireless debugging through the Android Settings:

IDE Plugin

Enable wireless debugging through IDE Plugin:

ADB Commands

Set up adb so that commands such as adb logcat will run:

Set up adb so that commands such as `adb logcat` will run: