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I need an experienced electronics / PCB engineer to design a reliable 24/7 traffic light controller PCB. This is a safety-critical industrial system, not a hobby project. System Details: 220VAC traffic light LED modules Control via TRIAC (optocoupler + TRIAC driver) Continuous 24/7 operation ESP32-based control Fail-safe design required Industrial-grade AC mains design Using EasyEDA Requirements: Strong ESP32 hardware experience Experience with AC mains / TRIAC design Experience with industrial / high-reliability systems Comfortable designing fail-safe protection systems Timeline (strict): Day 1: Complete schematic Day 2: PCB placement & routing If it takes longer, it means you are not experienced enough — this is not a complicated project. You must be ready to start immediately after award. Please check attached image. PCB1 is the main controller board, and additional expansion boards (PCB2) will connect to it. Only bid if you can start right now.
Project ID: 40229816
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Active 3 days ago
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8 freelancers are bidding on average $427 USD for this job

I am a skilled and reliable Embedded Systems Engineer with over 6 years of hands-on experience in Arduino, ESP32/ESP8266, and microcontroller-based development. I specialize in designing efficient, stable, and scalable embedded solutions, turning ideas into fully functional hardware-software systems. I have a strong background in electronics, sensors, communication protocols (UART, I2C, SPI, MQTT, WiFi, BLE), and real-time embedded systems. My development approach focuses on clean, well-structured, and well-documented firmware, ensuring long-term reliability and easy maintenance. I also provide thorough testing, debugging, and performance optimization, including power efficiency improvements where required. I am a detail-oriented engineer with strong problem-solving skills and extensive experience in hardware debugging and firmware optimization. Beyond technical expertise, I value clear communication, meeting deadlines, and maintaining high client satisfaction. I work closely with clients to fully understand project requirements and deliver high-quality results. Pricing is flexible and can be discussed based on project scope and complexity. I am open to both short-term and long-term projects. Let’s work together to build a professional, reliable, and efficient embedded system for your needs.
$25 USD in 7 days
7.4
7.4

Hi i'm engineer, Internet of things, machine learning, networking, lighting, power distribution, automation and control expert, i have experience working in electromechanical systems and control - design and building, automated machines, industrial networks, electrical grids, electrical vehicles, renewable energy, distribution substations, grounding, coordination of protections. I can develop for you designs, plans, bill of materials, budgets and simulations; solidworks, simulink, simscape, pscad, proteus, electrical / mechanical engineering
$750 USD in 20 days
5.9
5.9

I will do:- Simple to advanced Circuit design and analysis using software tools such as KiCAD, Proteus, Altium Designer, Allegro, PADs, and Eagle My package provides the following services - Schematic drawings - Gerber files - Netlist generation - Pcb's - BOM generation (Professional BOM) - 3D Models of the Actual PCB - ECAD Library Administration I will also generate Gerbers on existing PCBs files
$500 USD in 7 days
3.8
3.8

Hi, I have extensive experience designing industrial grade AC systems and am ready to start your traffic light controller immediately. My background in high reliability electronics ensures that the ESP32 integration and TRIAC based switching will meet your safety critical requirements for continuous operation. I am highly proficient in EasyEDA and can guarantee a completed schematic within the first twenty four hours followed by precise routing on day two. I understand the importance of fail safe protection and industrial standards for mains voltage handling. Your timeline is perfectly manageable given my expertise in embedded hardware and PCB layout. I am prepared to begin work the moment the project is awarded. Best regards
$50 USD in 2 days
1.9
1.9

✅✅✅ Industrial ESP32 / AC-Mains PCB Design Engineer ✅✅✅ Hi there, I have solid experience designing ESP32-based industrial PCBs operating on 220VAC with opto-isolated TRIAC control for continuous 24/7 systems. My work includes proper creepage/clearance, surge protection, watchdogs, and fail-safe architectures for safety-critical applications. My approach is to complete a robust schematic on Day 1 with full isolation, snubber networks, MOV protection, zero-cross considerations, and hardware fail-safe logic. Day 2 will focus on clean EasyEDA layout with strict AC/DC segregation, thermal control, and EMI-aware routing suitable for industrial reliability. A few questions: What load current per channel? Is zero-cross switching required? Do you need hardware watchdog or redundant output interlock? I am ready to start immediately. Best regards
$25 USD in 3 days
2.7
2.7

Hello, I’m Nabil, an Electronics and Embedded Systems Engineer. I will deliver all manufacturing and design files. Kindly message me to discuss the details.
$40 USD in 7 days
0.7
0.7

Hello, I can start immediately and meet your 2-day timeline. I have strong experience with ESP32, AC mains/TRIAC control, and safety-critical industrial PCB design, including fail-safe systems and 24/7 operation. Comfortable working in EasyEDA and designing both main and expansion boards. Ready to review the attached image and proceed.
$25 USD in 7 days
0.0
0.0

mycity, Macedonia
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Member since May 3, 2013
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