ESP32 eBike Telemetry PCB Design

I’m building a production-ready telemetry and safety monitoring module for electric bikes.

I need an experienced electronics engineer to design the complete schematic and PCB layout so it can be manufactured and integrated into an enclosure by a third-party company, possibly with all the sensors I te grated and shipped

The system operates in a high vibration, moisture, and electrical noise environment (motor controllers, 60V battery system). This must be a robust, professional design — not a hobby board.

System Overview

Power

Input: 48–72V DC (60V nominal lead-acid pack)

Requirements:

High-efficiency buck to 5V and 3.3V

Reverse polarity protection

Fuse + TVS + filtering

EMI / noise protection

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Microcontroller

ESP32 module with 4G (WROOM or S3 – engineer may recommend)

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Sensors / ICs

SHT31 – Temperature + Humidity (I2C)

DS18B20 – Battery temperature (1-Wire)

YL-83 – Water / rain detection (Analog)

INA226 – Voltage / current / power monitoring (I2C)

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Connectivity

Locking connectors for power and sensors

Programming / debug header

Expansion headers (I2C / UART preferred)

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Mechanical

Compact PCB suitable for enclosure inside e-bike

Mounting holes

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Deliverables

Schematic files

PCB layout

Gerbers + Pick & Place

BOM with part numbers

PDF schematic

Basic design notes


(KiCad or Altium preferred)
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Ideal Freelancer

Experience with ESP32 hardware

Power electronics and EMI design

Industrial / automotive electronics preferred

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Timeline & Budget

Please propose timeline, cost, and examples of past PCB projects.

NDA required.