John Carlo Cheng Roa
Building hardware and software from the gate level up. Currently wiring discrete logic at DLSU, debugging cloud infrastructure, and avoiding magic smoke.
- CURRENTLY
- Debugging my life purpose
- TOOLS
- Multisim, KiCad, solder fumes, spotify
- LOCATION
- Manila, PH
- STATUS
- Usually in bed, doomscrolling
- FAVORITE IC
- 74HC595 (8-bit SIPO Shift Register)
Featured Research
Selected scientific papers and engineering investigatory projects.
April 16, 2026 • De La Salle University - Velasco Hall
Design, Implementation, and Performance Evaluation of Discrete and Three-Terminal Integrated Voltage Regulation Circuits
An electronics engineering investigation designing, simulating, constructing, and testing a discrete series-pass (2N3055/TIP32C) regulator and an integrated (LM317T) 9V linear regulator.
Featured Project
Digital logic circuits, embedded systems, and hardware design.
2026 • De La Salle University - Velasco Hall
Single-Digit Random Number Circuit Design & PCB Implementation
A digital sequential and combinational logic circuit utilizing an astable 555 timer, 74LS90 decade counter, and 74LS47 decoder to simulate an unpredictable single-digit dice roller on a custom PCB.