Simplifying the complex with engineering excellence

San Diego Engineering Design Services


With any new assignment, our creative brainstorming and ideation is where the fun begins. At Simplexity, we start concept generation in a distinctive manner. This kickoff, an essential part of our design process, has proven over decades to deliver the simplest, most effective product engineering results possible.

How do we do it? We start with the big picture. Next, we're relentless in drilling down to identify the most challenging, high-risk areas of the project. If a feasibility study is called for, we identify it right away. This team kick-off is a creative, blue-sky kind of place. Everything’s on the table; the scope, the paradigms, the traditional and not-so-traditional engineering choices. By beginning the project from a systems perspective, we can question assumptions and brainstorm solutions that would not be possible by looking at things piecemeal. We identify the most challenging aspects and dig in. If a feasibility study is called for we identify it right away. Next, we’re relentless in drilling down to identify the most challenging, highest-risk areas of the project. The best ideas that come out of this process are honed and refined into a system architecture that delivers the most successful product possible.

Beyond efficiency, how does this approach help our clients? Just one example – on rare occasions an intractable problem will halt a project; if that happens, we deliver the news you need as fast as possible. With our design process itself engineered to deliver what’s best for you, we spend as little money as possible proving the concept will work, saving the more routine design challenges for later, once risks are minimized.

Once risks are understood, we dive into the details with our full-service team to deliver the next milestone. Our services are comprehensive to serve your design needs in every discipline: mechanical, electrical, firmware, software, and manufacturing.

Detail design is where ideas are manifest by thousands of engineering decisions that bring those ideas to reality. Each feature of every part has a distinct function and can be designed an infinite number of ways. Simplexity engineers put their experience to work every day; performing calculations to simplify problems and determine the best feature sets necessary to create a reliable product.

When Hewlett Packard approached us recently, they had a bold new idea for a consumer color printer attractive enough to please the most design-conscious buyers. Read our HP Envy case study to see how our design engineers made this concept a best-selling reality.

Design Capabilities

With our two decades of experience in high-volume manufacturing design, we know what it takes to make the 999,999th unit work just as well as the first. Read on for a few examples of our design capabilities.

Concept generation and System Architecture

  • Brainstorming
  • Concept feasibility studies
  • Design options and alternatives
  • Project timeline, budget and schedule
  • ESR (Engineering Specifications Requirement) Documents: functional requirements, critical parameters, system requirements, customer expectations, service requirements and success measures.
  • Proof-of-concept prototypes

Systems engineering and Technology Integration

  • Performance evaluation, trouble shooting individual sub-systems and system interfaces
  • Hardware integration of off-the-shelf sensors and measurement systems
  • Final inspection solutions

Mechanical Engineering:

  • Fluidic, pneumatic, mechanical, optics, solar, sound, seals, over-molding, and thermal design
  • 3D CAD Modeling
  • Detailed 2D drawings with GD&T specifications per ANSI and ASME standards
  • Preparing detailed Bill of Materials (BOM) for procurement of parts for assembly
  • Engineering analysis (See Analysis for details)
  • Prototype testing, statistical analysis (ANOVA DOE), writing test plans, supervising assembly, part qualification
  • Interacting with vendors and suppliers, interfacing with cross-functional team like firmware, software, service engineers, human-factor engineers, and technical writers

Machine and Mechanism Design

  • Components including bearings, linkages, and structural assemblies
  • Selection and design of various mechanical assemblies and drives like gear trains, belt drives, pulleys, torque couplings, linear motion slides, ball screw, and lead screw drives
  • Custom design of mechanisms using linkages, springs, pneumatics, hydraulics and other mechanical and electro-mechanical actuators.

Electrical Engineering

  • PCB Architecture, design, layout, and prototyping
  • EMC, ESD, RFI, Design for compliance
  • Design for high volume production, design for manufacturing, design for low cost
  • 3D mechanical modeling of PCAs, electronics packaging, and cooling
  • Digital design, FPGAs, Verilog, and simulation. High and low speed busses.
  • Sensors, low noise amplifiers, thermocouples, optical, encoders, and strain gages
  • Power supply and battery specifications and design
  • Cable harnesses design and prototyping


  • Logic, programming, and control of electronic and electro-mechanical components like sensors, motors, pumps, and solenoids
  • Servo control, PWM control, actuation and automation of electronic and electro-mechanical components
  • Sensor interface and data collection
  • Motor control: brushed DC, brushless DC and stepper motors
  • Servo control for position, velocity, torque or force control
  • Device I/O: serial, USB, RS232, RS485, I2C, 2wire, SPI, Wi-Fi, Ethernet, Bluetooth, Zigbee, Zwave, Cellular modem
  • Embedded Operating Systems: RealTime (Threadx VxWorks, uCos), Embedded Linux, BSPs
  • Microprocessors: ARM, Intel, 8051 variants, PIC, x86, AVR

Mechatronic Systems and Motion Control

  • Motor selection, drive electronics and algorithms for Brushed DC, Stepper, Servo motors, and Brushless DC motors
  • Feedback sensor selection and interfacing
  • PID and State Space controllers for applications such as pressure, temperature, velocity and torque control
  • Supervisory logic, programming and control of electronic and electro-mechanical components like sensors, motors, pumps and solenoids
  • Real time systems for motion control


  • Windows Development: C#, C++, C, Java
  • Host applications: Development tools, test execution and production, End of Line (EOL), Quality Control (QC)
  • Databases
  • Web applications/services: Dynamic data management and presentation
  • Mobile platforms: Windows Mobile, Android, iOS
  • Programmable Logic Controllers (PLCs)
  • Labview, Matlab

Design for Manufacturing and Assembly (DFMA)

  • Vendor integration during early prototype phases
  • DFM (Design for Manufacturing) of machined, injection molded, and sheet metal parts
  • EOL (End of Line) and mid-line testing tools and processes (functionality testing, leak testing, etc)
  • Generating build documentation and service documentation
  • Training operators and vendors on assembly
  • Prototyping, testing and resolving build issues during manufacturing

Contact us today for a free consultation on your engineering challenge