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Engineering & Architecture engineering (mechanical / chemical / civil / electrical)

Circuit Design, Firmware & Prototyping

$12/hr Starting at $50


I am an RF and Embedded Systems Engineer with 12+ years of experience in electronics design, testing, and prototyping. I specialize in circuit design, simulation, and firmware development, ensuring proof-of-concept validation before moving into full product development.

My Core Expertise

Circuit Design & Simulation (Proteus, Altium, EasyEDA)

Microcontroller Firmware (PIC, Arduino, RS485/Modbus, ADC integration)

RF Testing & Analysis (amplifiers, filters, converters, VSWR, gain, LOS analysis)

Component Sourcing & Alternate Selection (for obsolete/unavailable parts)

Prototype Development (vero board proof-of-concepts with tested circuits)

How I Work

  1. Simulation First – I design and verify the circuit in Proteus/other tools.

  2. Prototype Testing – Build proof-of-concept on a vero board for validation.

  3. PCB Layout (Optional) – If required, I can provide PCB design support (via collaboration with dedicated layout engineers).


 Deliverables May Include:

Schematic diagrams

Simulation files

Firmware source code + HEX files

Prototype guidance / tested concept

Bill of Materials (BoM) with alternate components

Optional PCB layouts (simple boards) or referral to layout specialists


About

$12/hr Ongoing

Download Resume


I am an RF and Embedded Systems Engineer with 12+ years of experience in electronics design, testing, and prototyping. I specialize in circuit design, simulation, and firmware development, ensuring proof-of-concept validation before moving into full product development.

My Core Expertise

Circuit Design & Simulation (Proteus, Altium, EasyEDA)

Microcontroller Firmware (PIC, Arduino, RS485/Modbus, ADC integration)

RF Testing & Analysis (amplifiers, filters, converters, VSWR, gain, LOS analysis)

Component Sourcing & Alternate Selection (for obsolete/unavailable parts)

Prototype Development (vero board proof-of-concepts with tested circuits)

How I Work

  1. Simulation First – I design and verify the circuit in Proteus/other tools.

  2. Prototype Testing – Build proof-of-concept on a vero board for validation.

  3. PCB Layout (Optional) – If required, I can provide PCB design support (via collaboration with dedicated layout engineers).


 Deliverables May Include:

Schematic diagrams

Simulation files

Firmware source code + HEX files

Prototype guidance / tested concept

Bill of Materials (BoM) with alternate components

Optional PCB layouts (simple boards) or referral to layout specialists


Skills & Expertise

Circuit DesignCircuit Simulation (proteus)Component Sourcing / Obsolescence ManagementElectronicsMicrocontroller Firmware (pic Arduino)Product DevelopmentPrototypingRs485 / Modbus CommunicationTechnical Documentation

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