IoT Sensor PCB Design

@germanob

Hello, I’m an electronics/embedded systems engineer with experience in **ESP32-based hardware, KiCad PCB design, power management and embedded systems**, and I’d be very interested in designing this IoT sensor board. I understand the project requires more than simply connecting the components — the board needs to be compact, low-power, manufacturable and properly designed around the ESP32-C3 RF and the Li-ion power system. I can deliver: * Complete KiCad schematic with proper power architecture * ESP32-C3 integration with Wi-Fi/BLE * BME280, ambient light and microphone/sound sensing interfaces * I2C OLED display interface * Li-ion battery charging and power-path design * USB-C charging and power input * 3.3 V regulation I’ll pay particular attention to **component placement, return-current paths, decoupling, regulator/charger layout, USB-C routing and the ESP32-C3 antenna region**, since these are critical for a reliable IoT prototype. Before starting the layout, I would review the exact ESP32-C3 module, battery specifications, required charging current, sensor/microphone requirements and preferred board dimensions so the power architecture and component selection are correct from the beginning. I can provide a clean, organized KiCad project that is ready for fabrication and easy for another engineer to modify later. I’m available to start immediately and can discuss the board dimensions and component choices with you before beginning the schematic.

@SidUSA

Hi We are available to take this on and get your ESP32-C3 IoT sensor PCB working perfectly. The main issue with partially built hardware designs is usually the power routing or antenna keep-outs not lining up for compact boards specifically. Are you planning to use a 4-layer stackup for better noise reduction and do you want the sensor data displayed with custom page toggles or as a continuous scroll on the OLED? We recently fixed a similar IoT sensor layout for a hardware firm that needed environmental telemetry injected into custom enclosures. I used KiCad to route the I2C bus and built a robust power-path management system before using the BME280 and ESP32-C3 modules to update the telemetry readings. I corrected their schematic and layout structure to ensure the antenna keep-out area actually worked across low-cost fabrication houses. My fix stopped their wireless packets from dropping during battery operation and made the whole prototyping process way faster for their team. We are eager to discuss the project further. Reach out to initiate a conversation! Best regards, Quantum Code Solutions