Completed three-axis CNC machine for aluminum machining

Selected work · 2019–2026

Engineering portfolio

Software supporting live operations and physical systems developed from CAD through fabrication, integration, and testing.

Operational software · Automation · Mechatronics · Manufacturing

At a glance

I work between operational context and technical implementation: understand the problem, design the system, and remain accountable for the result.

software systems: 2
featured builds: 3
supporting samples: 7

Software and operations

Systems exposed to real constraints.

These projects prioritize operational continuity, human review, auditability, and maintenance over isolated demos.

Sanitized main dashboard of the internal Médéric Hospital system

In productionPrivate system

01 / Software and operations

Médéric operations system

An internal platform I designed and operate around the daily needs of a private hospital. It connects operational logs, professional records, maintenance, controlled prescriptions, auditing, and WhatsApp queries.

Nursing and cleaning logs with individual users, PIN confirmation, signatures, and monthly reports.
AI-assisted professional document intake with human review and fail-soft error handling.
On-premise Linux deployment, auditing, and encrypted backups across four locations.

Python · Flask · SQLAlchemy · SQLite · Anthropic API · Twilio · Linux · Nginx

OperatingPublic project

02 / Software and operations

Lex MX

A public pipeline that transforms Mexican federal legislation from official PDFs into structured Markdown for AI systems.

317 laws and codes cataloged as of August 2026.
Detects reforms by date and rebuilds only the documents that changed.
Preserves change history through Git and daily GitHub Actions automation.

Python · pdftotext · Markdown · Git · GitHub Actions

Repository Build log

Physical systems

From the model to a machine that moves.

Projects where the outcome depended on tolerances, fabrication, alignment, wiring, commercial components, and physical tests.

Built and tested

CNC3 - three-axis CNC router

CAD · machining · fabrication · controls · real operation

Independent 2.2 kW CNC build with a 400 × 300 × 150 mm working envelope. I developed the assembly, fabricated the frame, integrated motion and controls, aligned and commissioned it, then sold the working machine for use in a Mexico City workshop. One 150.0 mm target feature was measured within ±0.2 mm; this is not presented as whole-machine volumetric accuracy.

Mechanical design across the frame, gantry, component layout, assembly, and manufacturability constraints.
CAD/CAM decisions connected directly to machining, fabrication, and practical operation.
Electromechanical integration, control packaging, commissioning, testing, and troubleshooting.

Completed CNC3 three-axis CNC router — Finished machine · complete working system

CAD assembly of the CNC3 router — CAD · machine layout and motion packaging

Components machined for the CNC3 router — Machined components · design carried into fabrication

Electrical control packaging for the CNC3 router — Controls · electrical and controller packaging

Built and tested

Electric bicycle / battery pack

Light EV build · mechanical packaging · battery assembly · testing

A functional light electric vehicle project covering mechanical packaging, frame fabrication, battery-pack assembly, wiring, and system-level troubleshooting. The BMS and controller were commercial components that I integrated and configured, not circuits designed from scratch.

Mechanical packaging for battery placement, mounts, wiring, and practical assembly constraints.
Battery-pack construction and integration of commercial BMS, controller, and motor components.
Prototype-to-use execution through fabrication, wiring, testing, troubleshooting, and real operation.

Completed electric bicycle being tested in use — In use · completed vehicle under real testing

Completed red electric bicycle build — Full build · mechanical layout and component packaging

Frame fabrication work for the electric bicycle — Fabrication · frame and structure work

CAD layout for the electric bicycle battery pack — Battery CAD · cell layout and packaging concept

Built and tested

Robotic arm

Physical build · partial mechanical design · assembly · integration

An engineering project I built physically and helped design in part. It demonstrates robotics exposure, CAD and detail work, mechanical assembly, wiring, and electromechanical integration without overstating my ownership of the complete original design.

Hands-on work across the arm structure, joints, gripper, wiring, and physical assembly.
Partial mechanical design contribution supported by assembly and end-effector CAD.
Relevant experience for machinery, automation, electromechanical products, and prototype validation.

Physical robotic arm built and partially designed by Daniel Terán — Physical build · links, joints, wiring, and end effector

CAD assembly of the complete robotic arm — CAD assembly · arm motion and packaging layout

Detailed CAD model of the robotic arm gripper — Gripper CAD · end-effector mechanism detail

Close-up of the assembled robotic arm joints and gripper — Physical detail · assembled joints and gripper

Manufacturing and prototyping

Additive manufacturing / 3D printing

Selected samples showing rapid prototyping, physical iteration, and the practical translation of digital geometry into manufactured parts.

The focus is print preparation, layer orientation, tolerances, iteration, and part usability. These samples demonstrate manufacturing experience without claiming original design ownership of every printed model.

Mobile robot prototype assembled with 3D-printed structural parts — Printed mobile robot assembly · physical prototype

3D-printed gears, track components, and mechanical test parts — Printed parts · mechanical samples and track components

Batch of prototype components on a 3D printer bed — Print bed · prototype batch during manufacturing

Supporting work

Additional CAD and mechanism samples

Secondary projects that show range across assemblies, motion concepts, linkage design, and compact machine ideas.

Multicolor CAD model of a Theo Jansen walking linkage

Theo Jansen linkage

Multi-link motion study focused on geometry and mechanism logic.

CAD model of a conveyor and dosing mechanism with a hopper and gear train

Conveyor / dosing mechanism

Compact CAD assembly combining transport, dosing, and mechanical drive components.

CAD model of a motor-driven reciprocating cutting mechanism

Reciprocating cutter

Motor-driven linkage concept translating rotary input into cutting motion.

Earlier desktop CNC

An earlier complete machine build showing the progression toward the larger CNC3 system.

Contact

Need to take an operation or mechanism from idea to reality?

I can work from problem discovery and architecture through construction, validation, and operation of the result.

Let's talk