Hello, I'm Allen, an electrical & computer engineering, and mechanical engineering double major at Worcester Polytechnic Institute, in Massachusetts. I enjoy making embedded systems as a hobby and take any opportunity to design a PCB when a problem would be elegantly solved with one.

This document is not intended to provide any robust engineering documentation of any of the projects shared.

I will be demonstrating 3 of my favorite projects to share, all of them have been done in KiCAD which I find easiest to use in small/personal projects since Git does a better job tracking the project files.
I also have experience with Altium Designer, and prefer it for more complex high-speed and mixed signal projects. Especially when working with multiple boards described in a schematic. I do not have any Altium projects to share, all of the projects are under export restriction. (CUI & ITAR)

Project Index

Gompei's Open Asset Tracker (GOAT): A dual band (LoRa 915MHz and Bluetooth 2.4GHz) Bike Share Interface.

High Resolution OSC Faders: A prototype for using high resolution controller input surfaces as an alternative to the low resolution MIDI standard.

Bluetooth Programmable LRA Gateway (BPLG): A wireless 3 axis haptic driver board.

Note: If you are interested in learning more, reach out, I have much more to share about all of these projects!
Note: I'm still working out where to host my repositories, no Github. All of my shared projects fall listed fall under GPLv3.

A small board designed to fit within a CR123A Battery holder's footprint. It is an interface between the cloud (amazon sidewalk), bicycle lock, and client's phone, for providing a robust and user friendly bike share service. The board includes built in battery management for over temperature, under voltage, and over voltage protection, as well as expansion possibilities for NFC, GNSS (GPS) support, or any UART peripheral and charging hardware.

Stack up: (4)
Signal (Horizontal)
GND
PWR
Signal (Vertical)

Fab: JLC PCB, Osh Park
License: GPLv3
Note: Not yet fabricated

This project was completed as one of my music requirements and is a tool for atonal harmony and polyrhythm exploration. Because of the inherent time constraints of a 7-week term, I fabricated this PCB on campus using a LKPF Proto-laser and double clad FR4 sheet. Due to the limitations of the technology I did not use use vias in this design and made extensive use of jumpers for the prototype. The PCB was designed to mate with a development kit for the Renesas RA2A1, and I chose this board because of its 16Bit ADC's.

Stack up: (2)
Signal
GND

Fab: LKPF ProtoLaser
License: GPLv3
Fun Fact: Renesas does not provide foot prints for the headers on their dev kits.

^PCBA Top

^PCBA Bottoms

A 3 Axis Linear Resonant Actuator (LRA) Driver Board intended for improving in game immersion in VR. Designed for wearable applications this board achieves intense haptic feedback while being easy strapped on to the body. This PCB hosts a very conservative lithium cell management IC for maximum safety.

Stackup: (2)
PWR, Signal
GND, Signal

Fab: Osh Park
License: GPLv3
Note: This was my first PCB project, I learned a lot from it.

^TOP Schematic

^LRA Driver Sub Schematic

Thank you for your time.

Best,
Allen