Problem: Aging cameras, ad-hoc wiring, and inconsistent NVR configurations caused outages and troubleshooting delays.
What I did:
Replaced failing sensors and cables.
Tuned Milestone/Husky NVR recording profiles.
Standardized cabling, labeling, and strain relief across sites.
Outcome: Higher system uptime, reduced service calls, and faster on-site diagnostics across multiple public-sector clients.
Stack: Hikvision and Axis cameras, Milestone and Husky NVRs, CAT6 cabling, labeling standards.
Problem: Needed resilient backups for core fiber and connectivity for non-fiber sites.
What I did: Provisioned and aligned Siklu 8010, 2500, 1200, 700, and 600 radios; documented paths.
Outcome: Reliable continuity in case of fiber cuts, extended network reach.
Stack: Siklu mmWave radios, backup routing, Siklu EMS
Problem: Residents and visitors had limited or no internet access in public outdoor spaces.
What I did: Designed and installed APs and wireless backhaul to provide stable coverage across open-air environments.
Outcome: Expanded community access to internet services in high-traffic public spaces.
Stack: Outdoor-rated APs, Ubiquiti radios, PoE injectors, weatherproof enclosures.
Problem: Frequent jams and wear slowed daily ops.
What I did: Preventive maintenance, diagnosis, replacement of rollers/sensors, calibration.
Outcome: Lower downtime, longer printer lifespan.
Stack: Zebra Xi series, Z series, ZT series printers.
Problem: Sites needed 24/7 video + backhaul where grid power wasn’t available.
What I did:
Ran a load/power budget for cameras + radio (PoE) and target uptime.
Installed two PV panels per site, sealed battery bank in NEMA enclosure, and MPPT charge controller.
Wired DC → PoE (injectors/switch), added surge/grounding, labeling, and weatherproof fittings.
Commissioned and verified charge/float behavior and device uptime.
Outcome: Reliable, off-grid operation with multi-day stability, fewer truck rolls, and clear serviceability (labeled, tidy enclosures).
Stack: 2× PV panels/site, NEMA box, MPPT controller, sealed batteries (AGM/LiFePO₄), PoE injectors/switch, outdoor cabling, monopole mounts.
Problem: Solar-only sites risked low battery state-of-charge during long nights / cloudy days.
What I did:
Spec’d small turbines (≈400–600 W class) to match load + battery bank.
Installed wind charge controller with rectifier + dump/diversion load; coordinated setpoints with the solar MPPT.
Routed turbine cabling through pole/NEMA, added surge/lighting protection and grounding.
Verified cut-in and charging behavior in typical wind conditions.
Outcome: Longer autonomy, smoother overnight SOC, fewer truck rolls during bad weather.
Stack: 400–600 W turbine, wind controller + rectifier, dump load, NEMA enclosure, AGM/LiFePO₄ batteries, DC→PoE injectors/switch, grounding & surge.
Concept to blend solar into cities, capture AM/PM sun, and power lighting/signage/charging at bus stops.
Problem: Solar adoption in cities can be blocked by aesthetics and grid timing (midday peaks vs. AM/PM demand).
What I did: Wrote a research paper proposing bifacial panels mounted vertically with custom color/graphics for bus stops—using albedo to capture rear-side light, better morning/evening production, and lower visual disruption. I outlined use cases: lighting, real-time signage, phone charging, and security cameras.
Outcome: A deployable concept cities can pilot to add renewables without “ugly panels,” smoothing the duck curve and improving rider experience.
Stack: Literature review, urban integration concept, bifacial/vertical performance rationale, colored-panel approaches.
Problem: Listing books was slow and error-prone because shipping and fee impacts weren’t obvious up front.
What I did:
Built a spreadsheet calculator for price caps, shipping tiers, and net profit.
Created quick what-if inputs to test sale price vs. net payout.
Used image recognition software and LLM to determine profitability.
Outcome: Faster pricing with fewer mistakes; consistent margins across listings.
Stack: Google Sheets (formulas, data validation, conditional formatting).
Problem: Needed secure remote browsing and lightweight DNS ad-blocking.
What I did: Configured Pi-hole, Tailscale exit node, and custom systemd services on a secondary device (rain-noise loop).
Outcome: Reliable remote access and simple local services.
Stack: Raspberry Pi / Armbian, Pi-hole, Tailscale, systemd.