LED Dimming Home Automation PCB
Budget: ₹1,500 – ₹12,500 INR
Hello,
I am looking for an experienced Embedded Hardware and Firmware Engineer to design a
commercial-grade Smart Dimmable LED Ceiling Light. The product must be compatible with
Wi-Fi, Amazon Alexa, Google Assistant, and a mobile app.
Below are the complete project requirements:
1. Hardware Requirements:
• Microcontroller: ESP32-C3 (Preferred for Wi-Fi, BLE, and Matter protocol support).
• Power Supply: 90V - 265V AC Input. Needs a reliable isolated AC-DC Flyback
constant current driver.
• LED Load: 12W to 15W LED array (SMD 2835 on an Aluminum MCPCB).
• Dimming: Smooth PWM dimming from 1% to 100% without visible flicker (Zero-cross
detection if needed, or direct PWM to driver IC DIM pin).
• Protection: Must include Surge protection (MOV up to 4kV), over-current, and thermal
protection.
• Form Factor: The PCB must fit inside a standard 3-inch or 4-inch circular ceiling
downlight enclosure.
2. Firmware & Smart Features:
• Ecosystem: Prefer using ESP-RainMaker or native Matter protocol for quick mobile
app generation and Alexa/Google Home integration.
• Core Functions: ON/OFF control, Brightness control (Dimming), and Voice Command
execution.
• OTA: Must support Over-The-Air (OTA) firmware updates.
3. Expected Deliverables (What I need from you): I need manufacturing-ready files to send to
my PCBA assembler in India.
1. Schematics (.pdf and source files): Complete circuit diagram.
2. Gerber Files: Standard RS-274X format for PCB manufacturing.
3. BOM (Bill of Materials): Excel sheet with exact part numbers, component values, and
supplier links (preferably LCSC or Mouser) with cost estimation.
4. CPL / Pick-and-Place File: For automated SMT assembly.
5. Firmware Source Code: Well-documented C/C++ code along with step-by-step
instructions on how to flash it into the ESP32 chip.
Please review this and let me know your estimated cost and timeline for this project. Let us
divide the project into milestones.
I am looking for an experienced Embedded Hardware and Firmware Engineer to design a
commercial-grade Smart Dimmable LED Ceiling Light. The product must be compatible with
Wi-Fi, Amazon Alexa, Google Assistant, and a mobile app.
Below are the complete project requirements:
1. Hardware Requirements:
• Microcontroller: ESP32-C3 (Preferred for Wi-Fi, BLE, and Matter protocol support).
• Power Supply: 90V - 265V AC Input. Needs a reliable isolated AC-DC Flyback
constant current driver.
• LED Load: 12W to 15W LED array (SMD 2835 on an Aluminum MCPCB).
• Dimming: Smooth PWM dimming from 1% to 100% without visible flicker (Zero-cross
detection if needed, or direct PWM to driver IC DIM pin).
• Protection: Must include Surge protection (MOV up to 4kV), over-current, and thermal
protection.
• Form Factor: The PCB must fit inside a standard 3-inch or 4-inch circular ceiling
downlight enclosure.
2. Firmware & Smart Features:
• Ecosystem: Prefer using ESP-RainMaker or native Matter protocol for quick mobile
app generation and Alexa/Google Home integration.
• Core Functions: ON/OFF control, Brightness control (Dimming), and Voice Command
execution.
• OTA: Must support Over-The-Air (OTA) firmware updates.
3. Expected Deliverables (What I need from you): I need manufacturing-ready files to send to
my PCBA assembler in India.
1. Schematics (.pdf and source files): Complete circuit diagram.
2. Gerber Files: Standard RS-274X format for PCB manufacturing.
3. BOM (Bill of Materials): Excel sheet with exact part numbers, component values, and
supplier links (preferably LCSC or Mouser) with cost estimation.
4. CPL / Pick-and-Place File: For automated SMT assembly.
5. Firmware Source Code: Well-documented C/C++ code along with step-by-step
instructions on how to flash it into the ESP32 chip.
Please review this and let me know your estimated cost and timeline for this project. Let us
divide the project into milestones.