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C Programming Circuit Design Electronics Microcontroller PCB Layout
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Satyajit R.

@cpp2048

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5.0
134

7.3

7.3

95%

Full Stack Embedded System • Power Electronics

$30 USD / Hour

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Flag of

India (9:50 AM)

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Joined on July 30, 2007

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8 Recommendations

$30 USD / Hour

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⚡ Professional Embedded Systems & Product Design Expert | 15+ Years Freelance Experience ⚡ For the past 15 years, I’ve been a full-time freelance product designer, delivering high-quality hardware and firmware solutions for both industrial and consumer markets. From concept to prototype to production, I help bring ideas to life, efficiently, reliably, and with long-term support in mind. Whether you need hardware design, sensor data acquisition, power systems, firmware development, or complete system integration, I offer end-to-end solutions tailored to your goals. ✅ What I Offer ⚡ Hardware Design & Prototyping • 15+ years with Altium, KiCad, and Eagle • Expertise in embedded, mixed-signal, and analog systems • Battery and Solar Powered Systems • Sensor integration & industrial IoT hardware • Skilled in SPICE simulation (LTspice, TINA-TI) • Fully equipped in-house lab for testing and validation ⚡ Firmware & Embedded Development • 20+ years of C programming with GCC, SDCC, CCS • STM32, ESP32, Microchip 8/16/32-bit, TI MSP430/MSP432, C2000 • Power-efficient firmware, custom bootloaders, and protocols • FreeRTOS and Bare-Metal programming ⚡ Connectivity & Communication • RS485, CAN, LIN, USB, Ethernet • Wi-Fi, GSM, LTE, LoRa, BLE, Sub-GHz RFs • Any type of sensor/device integration ⚡ Software Integration • Desktop app development using MSVC, GCC • Bridging hardware with desktop tools or automation systems ⚡ Production & Supply Chain Support • BOM cost optimization & component sourcing • Established connections with Chinese manufacturers and supply chain management • Low to mid-volume production support ✅ Why Work With Me • End-to-End Expertise: With 20+ years of experience in electronics and programming, I bring equal proficiency in both hardware design and firmware development, ensuring seamless integration between the two. • Project Ownership: From schematic capture and PCB layout to embedded firmware and system validation, I take full responsibility across the entire development cycle. • Quality Assurance: My work is backed by lab-grade test equipment, simulation tools, and a rigorous validation process to guarantee accuracy and reliability. • Post-Delivery Support: I provide long-term assistance beyond delivery, helping you through product updates, field issues, and lifecycle management. • Intellectual Property Respect: I treat your IP with the utmost confidentiality. Your designs, code, and data are fully protected and never reused or shared. • Reliable Collaboration: Having worked with clients globally, I understand how to communicate clearly, meet deadlines, and deliver results that align with your vision. ✅ Let’s Connect No pressure, no obligation. If you have a concept or challenge you'd like to discuss, feel free to message me. I’m happy to explore how I can help turn your ideas into working, manufacturable solutions.

Verifications

On time

93%

On budget

97%

Accept rate

92%

Repeat hire rate

20%

Portfolio

Portfolio

11585317
11382932
11382916
11382909
10233221
10233193
11585317
11382932
11382916
11382909
10233221
10233193
5.0 · 134 Reviews
Reviews
O

Design Buck Converter for Electronics • ₹8,000 INR

Delivered the schematic and layout exactly as requested, with great attention to detail and clear communication throughout. Handled tight space constraints very well. Would gladly work together again.

Om P.

@omp539

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Ahmedabad, India

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4 months ago

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C

Neurostimulation Constant Current Source Circuit Design • $180 USD

Excellent, high quality work and communication

W D.

@constantine20

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Seattle, United States

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5 months ago

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K

Simple PCB Design for Wire Combination (archived) • $25 USD

He completely understood my request and completed it quickly. Will use again and highly recommend.

Karl I.

@karlirvin152

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Arlington, United States

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5 months ago

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B

PIC Microcontroller C Code Development • $265 USD

This freelancer is excellent. My project required coding for a pic microcontroller and I passed him a flowchart of what I needed and it the project was created exactly as I'd needed. His English is excellent and his clarifying questions showed deep knowledge of his ability to program, and his skill in identifying clear requirements. Will definitely hire again

Ben A.

@banjotoenails

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SYDNEY, Australia

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5 months ago

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F5 Isolated Condensor Driver - PCB design • $115 USD

Another successful project. Exceptional PCB develop skill and circuit knowledge.

Andy H.

@AndyHartland

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Flag of

High Wycombe, United Kingdom

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6 months ago

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Education

Electronics And Telecommunications Engineering (Gold Medalist)

1995 - 1998

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3 years

Flag of

India

1995 - 1998

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3 years

Certifications

F

Foundation vWorker Member

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