VU Meter Business Card

Board Layout

Spent most of the day working on laying out the VU meter components along the half-circle. This was before I finalized the component selection for the LEDs and the diode ladder.

For the final layout, I changed the orientation of the LEDs. I also used lines from the center of the half-circle. The angle between the LEDs is about 18 degrees with an 9 degree offset from 0 and 180 degrees.

After laying out the components. I moved the VU meters lower down the card.

Block Diagram
Decided on making a VU Meter. Below is the inital block diagram of the system.

The filter cutoff frequencies were taken from https://www.amplifiedparts.com/tech-articles/audible-frequency-range-and-describing-tone.
Board Layout

Started to layout the graphics for the VU meters. The VU meter is going to be a half-circle with the specific tonal bands labeled in the middle of the half-circle.

- Head Empty

1. 555 Timer based guitar pedal 

2. A 741 and 555 based oscillator circuit 

3. Mini-synth 

4. VU meter

Ideations - Head empty. Try again tomorrow.

Setup

- Created base KiCad project
- Created base Git repo