Proejtc
About the Proejtc PCB
Proejtc is an open source PCB design by jeff4444, published on GitHub. It is a 2-layer board measuring 31.5 × 24.5 mm, with 4 components from 4 distinct parts.
Other key parts include the PAM8403D. By type, the board carries 1 IC, 1 connector and 1 resistor.
It belongs with the audio designs in this gallery.
From the project
A laser-based audio communication system built for the Howard University IEEE H.O.P.E. (Hands-On PCB Engineering) Project (Fall 2025).
A laser-based audio communication system built for the Howard University IEEE H.O.P.E. (Hands-On PCB Engineering) Project (Fall 2025).
Project Lux is a free-space optical (FSO) communication system that transmits a high-fidelity audio signal over a laser beam.
This project demonstrates the core principles of optical communication. The system consists of two main components: 1. The Transmitter: Modulates an audio signal from a source (like a phone or laptop) onto a laser beam. 2. The Receiver: Intercepts the laser beam, converts the light back into an electrical signal, and amplifies it to…
Main components on the Proejtc
Proejtc bill of materials (BOM)
4 components, 4 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PAM8403D | SOIC-16_3.9x9.9mm_P1.27mm | U1 |
| 1 | Conn_01x03_Pin | PinSocket_1x03_P2.54mm_Horizontal | J1 |
| 1 | PL520 | LaserDiode_TO38ICut-3 | LD1 |
| 1 | R | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Vertical | R1 |
Proejtc design files
The KiCad project lives in the jeff4444/kicad-projects repository on GitHub; these links point at the commit this page was built from.
Proejtc: common questions
How big is the Proejtc PCB?
The Proejtc measures 31.5 × 24.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Proejtc?
4 components, from 4 distinct parts. The full bill of materials is listed on this page.
Where can I download the Proejtc design files?
From the jeff4444/kicad-projects repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Proejtc design in my own project?
The repository has no license, so all rights stay with jeff4444. Use it as a reference, and ask the author before reusing the design.
More boards in kicad-projects
Similar boards
KLOR
GEIGEIGEIST
160.2 × 118.3 mm79 parts2LGPL-3.01.2k
ButtonsLEDs
shanteacontrols
390 × 37 mm82 parts2LApache-2.0956
USB
52 × 12.6 mm6 parts2LApache-2.0956
Pots
390 × 93 mm75 parts2LApache-2.0956
PicoGUS Hand386
polpo
29.2 × 75.2 mm43 parts4LGPL-2.0800
Snark barker
schlae
231.1 × 106.7 mm193 parts2LNo license687