An annoying CAPS LOCK warning buzzer

Glen on the Photons, Electrons, and Dirt blog updates a build on an annoying caps lock warning buzzer.

In my first post on the Annoying CAPS LOCK Warning Buzzer, I concluded with a list of future improvements to make to the project. Those updates are now implemented and the Annoying CAPS LOCK Warning Buzzer is more robust than ever. Read on to find out more about the improvements.

Goals for Improvements

The list of new features and improvements is pretty short:

1. Include a ground plane on both sides of the board. Route +5V as traces.
2. Add some basic ESD protection.
3. Add a button and LED to use with a USB bootloader and firmware update utility to apply firmware updates.
4. Make the button and LED accessible without disassembling the buzzer.

The updated schematic

All design files are in a caps-lock-buzzer repository on github.

The v2 schematic and board files:

• Schematic
• Board

The Fusion 360 Archive and STL files for the enclosure:

• Fusion 360 Archive
• Enclosure Top STL File
• Enclosure Bottom STL File

The updated software:

• PIC16F1459 Bootloader Project for use with this Hardware
• Caps Lock Buzzer Firmware for use with the Bootloader and this Hardware

See the blog post for all the details.