Remote
Work location
Senior Embedded Hardware Engineer: Turnkey 4-Layer PCB Design & Prototype Bring-Up for Smartwatch Ended
About the job
Hi,I am building the DefendX Tactical Smartwatch. I need an expert hardware engineer to design the board completely from scratch—starting with component selection and schematics, all the way through 4-layer PCB layout and physical lab testing.
Project Requirements (42×42 mm, 4-Layer Board):
Core: ESP32-S3 (Compact module like the MINI series). Radios: Wi-Fi/BLE, Sub-GHz LoRa (e.g., SX1262), and GPS (e.g., SIM68M). Sensors: Biometrics (HR/SpO2 + Temp) placed wrist-facing on the bottom layer, plus a 9-axis IMU and Compass.
Power & Storage: LiPo battery management (with a central cutout pocket on the PCB for the battery) and SPI NOR Flash.
Your Scope of Work: BOM Selection: Pick reliable components that are actively in stock at JLCPCB/LCSC.
Schematics: Design the circuit from scratch, ensuring proper power domains (3.3V/1.8V) and I2C/SPI bus stability.
PCB Layout: 4-layer routing with strict RF keepouts and impedance matching. Hardware Bring-Up: You MUST be able to order PCBA prototypes to your own lab, power them on, verify voltages, and test basic USB/I2C communication before final delivery.
Design Suggestions & References Welcomed: We strongly welcome any design suggestions, component/architecture improvements, or layout references you have from similar ultra-compact wearable or wireless products you’ve built in the past.
If you are capable of this end-to-end turnkey design, please share your estimated cost and turnaround time. Also, to protect... read more
Project Requirements (42×42 mm, 4-Layer Board):
Core: ESP32-S3 (Compact module like the MINI series). Radios: Wi-Fi/BLE, Sub-GHz LoRa (e.g., SX1262), and GPS (e.g., SIM68M). Sensors: Biometrics (HR/SpO2 + Temp) placed wrist-facing on the bottom layer, plus a 9-axis IMU and Compass.
Power & Storage: LiPo battery management (with a central cutout pocket on the PCB for the battery) and SPI NOR Flash.
Your Scope of Work: BOM Selection: Pick reliable components that are actively in stock at JLCPCB/LCSC.
Schematics: Design the circuit from scratch, ensuring proper power domains (3.3V/1.8V) and I2C/SPI bus stability.
PCB Layout: 4-layer routing with strict RF keepouts and impedance matching. Hardware Bring-Up: You MUST be able to order PCBA prototypes to your own lab, power them on, verify voltages, and test basic USB/I2C communication before final delivery.
Design Suggestions & References Welcomed: We strongly welcome any design suggestions, component/architecture improvements, or layout references you have from similar ultra-compact wearable or wireless products you’ve built in the past.
If you are capable of this end-to-end turnkey design, please share your estimated cost and turnaround time. Also, to protect... read more
Hi,I am building the DefendX Tactical Smartwatch. I need an expert hardware engineer to design the board completely from scratch—starting with component selection and schematics, all the way through 4-layer PCB layout and physical lab testing.
Project Requirements (42×42 mm, 4-Layer Board):
Core: ESP32-S3 (Compact module like the MINI series). Radios: Wi-Fi/BLE, Sub-GHz LoRa (e.g., SX1262), and GPS (e.g., SIM68M). Sensors: Biometrics (HR/SpO2 + Temp) placed wrist-facing on the bottom layer, plus a 9-axis IMU and Compass.
Power & Storage: LiPo battery management (with a central cutout pocket on the PCB for the battery) and SPI NOR Flash.
Your Scope of Work: BOM Selection: Pick reliable components that are actively in stock at JLCPCB/LCSC.
Schematics: Design the circuit from scratch, ensuring proper power domains (3.3V/1.8V) and I2C/SPI bus stability.
PCB Layout: 4-layer routing with strict RF keepouts and impedance matching. Hardware Bring-Up: You MUST be able to order PCBA prototypes to your own lab, power them on, verify voltages, and test basic USB/I2C communication before final delivery.
Design Suggestions & References Welcomed: We strongly welcome any design suggestions, component/architecture improvements, or layout references you have from similar ultra-compact wearable or wireless products you’ve built in the past.
If you are capable of this end-to-end turnkey design, please share your estimated cost and turnaround time. Also, to protect the project budget, if a schematic or layout mistake on your end causes the prototype to fail, do you agree to update the design files free of charge? Looking forward to your proposals and past portfolio references. read less
Project Requirements (42×42 mm, 4-Layer Board):
Core: ESP32-S3 (Compact module like the MINI series). Radios: Wi-Fi/BLE, Sub-GHz LoRa (e.g., SX1262), and GPS (e.g., SIM68M). Sensors: Biometrics (HR/SpO2 + Temp) placed wrist-facing on the bottom layer, plus a 9-axis IMU and Compass.
Power & Storage: LiPo battery management (with a central cutout pocket on the PCB for the battery) and SPI NOR Flash.
Your Scope of Work: BOM Selection: Pick reliable components that are actively in stock at JLCPCB/LCSC.
Schematics: Design the circuit from scratch, ensuring proper power domains (3.3V/1.8V) and I2C/SPI bus stability.
PCB Layout: 4-layer routing with strict RF keepouts and impedance matching. Hardware Bring-Up: You MUST be able to order PCBA prototypes to your own lab, power them on, verify voltages, and test basic USB/I2C communication before final delivery.
Design Suggestions & References Welcomed: We strongly welcome any design suggestions, component/architecture improvements, or layout references you have from similar ultra-compact wearable or wireless products you’ve built in the past.
If you are capable of this end-to-end turnkey design, please share your estimated cost and turnaround time. Also, to protect the project budget, if a schematic or layout mistake on your end causes the prototype to fail, do you agree to update the design files free of charge? Looking forward to your proposals and past portfolio references. read less
Hi,I am building the DefendX Tactical Smartwatch. I need an expert hardware engineer to design the board completely from scratch—starting with component selection and schematics, all the way through 4-layer PCB layout and physical lab testing.
Project Requirements (42×42 mm, 4-Layer Board):
Core: ESP32-S3 (Compact module like the MINI series). Radios: Wi-Fi/BLE, Sub-GHz LoRa (e.g., SX1262),... read more
Project Requirements (42×42 mm, 4-Layer Board):
Core: ESP32-S3 (Compact module like the MINI series). Radios: Wi-Fi/BLE, Sub-GHz LoRa (e.g., SX1262),... read more
Hi,I am building the DefendX Tactical Smartwatch. I need an expert hardware engineer to design the board completely from scratch—starting with component selection and schematics, all the way through 4-layer PCB layout and physical lab testing.
Project Requirements (42×42 mm, 4-Layer Board):
Core: ESP32-S3 (Compact module like the MINI series). Radios: Wi-Fi/BLE, Sub-GHz LoRa (e.g., SX1262), and GPS (e.g., SIM68M). Sensors: Biometrics (HR/SpO2 + Temp) placed wrist-facing on the bottom layer, plus a 9-axis IMU and Compass.
Power & Storage: LiPo battery management (with a central cutout pocket on the PCB for the battery) and SPI NOR Flash.
Your Scope of Work: BOM Selection: Pick reliable components that are actively in stock at JLCPCB/LCSC.
Schematics: Design the circuit from scratch, ensuring proper power domains (3.3V/1.8V) and I2C/SPI bus stability.
PCB Layout: 4-layer routing with strict RF keepouts and impedance matching. Hardware Bring-Up: You MUST be able to order PCBA prototypes to your own lab, power them on, verify voltages, and test basic USB/I2C communication before final delivery.
Design Suggestions & References Welcomed: We strongly welcome any design suggestions, component/architecture improvements, or layout references you have from similar ultra-compact wearable or wireless products you’ve built in the past.
If you are capable of this end-to-end turnkey design, please share your estimated cost and turnaround time. Also, to protect the project budget, if a schematic or layout mistake on your end causes the prototype to fail, do you agree to update the design files free of charge? Looking forward to your proposals and past portfolio references. read less
Project Requirements (42×42 mm, 4-Layer Board):
Core: ESP32-S3 (Compact module like the MINI series). Radios: Wi-Fi/BLE, Sub-GHz LoRa (e.g., SX1262), and GPS (e.g., SIM68M). Sensors: Biometrics (HR/SpO2 + Temp) placed wrist-facing on the bottom layer, plus a 9-axis IMU and Compass.
Power & Storage: LiPo battery management (with a central cutout pocket on the PCB for the battery) and SPI NOR Flash.
Your Scope of Work: BOM Selection: Pick reliable components that are actively in stock at JLCPCB/LCSC.
Schematics: Design the circuit from scratch, ensuring proper power domains (3.3V/1.8V) and I2C/SPI bus stability.
PCB Layout: 4-layer routing with strict RF keepouts and impedance matching. Hardware Bring-Up: You MUST be able to order PCBA prototypes to your own lab, power them on, verify voltages, and test basic USB/I2C communication before final delivery.
Design Suggestions & References Welcomed: We strongly welcome any design suggestions, component/architecture improvements, or layout references you have from similar ultra-compact wearable or wireless products you’ve built in the past.
If you are capable of this end-to-end turnkey design, please share your estimated cost and turnaround time. Also, to protect the project budget, if a schematic or layout mistake on your end causes the prototype to fail, do you agree to update the design files free of charge? Looking forward to your proposals and past portfolio references. read less
Things to know
Expert
Skill Level
$100
Fixed-rate (USD)
Part-time
Job type
Under 1-month
Job duration
Areas of expertise
Circuit Schematic Design
Embedded Hardware Design
Embedded Systems Engineering
KiCad
KiCad EDA
PCB Assembly
PCB Casing Design
PCB Layout
+5 more
Job categories
Electronic Prototyping and Design Services
PCB Design Services
Electronic Devices
Product Engineering Services
Wearables Design
+2 more
About the client
Payment not ready
India (03:31 pm)
Posted
Active
Job activity
17 Applicants
0 interviews in progress
Similar jobs
Creo Mold Tool Design for Automotive Axial Fan & Support Frame
Remote - Posted
We are looking for a Creo Tool Design Engineer to develop:
Core & cavity design
Parting line definition
Runner & gate concept
Cooling & ejection concept
Moldflow feasib...
Mold and Die Design Services
Product Engineering Services
Automotive Design
Creo Design Services
Mechanical Design Services
View job
Senior Mechanical Engineer – Automotive Wheel Protection Product
Remote - Posted
We are developing a new exact-fit protective accessory for OEM automotive wheels and are seeking a senior mechanical product-development engineer to lead the initial feasibili...
Automotive Design
Product Engineering Services
Mechanical Design Services
Mechanical Engineering
View job
Industrial Product Designer for Custom Toothbrush – CAD, Mechanism & Injection Moulding
Remote - Posted
I am developing a new consumer oral-care product and already have a working physical prototype.
I am looking for an experienced Industrial/Product Designer with mechanical en...
Industrial Design Services
Product Engineering Services
Mechanical Design Services
View job
Mechanical Product Designer Needed – 4-Position Captured Slider Mechanism for Consumer Product
Remote - Posted
I need help designing a small manual mechanical slider for a consumer product.
The slider will have four positions:
AM | MIDDAY | PM | DONE
Requirements:
Approximately...
Mechanical CAD Design
Mechanical Design Services
Product Engineering Services
View job
PCB Engineer
Hong Kong - Posted
Hi applicant, I am looking for PCB engineer who could design - prototype - manufacturing. I prefer someone who has experience and from related background. Thank you.
PCB Design Services
Design for Manufacturing and Assembly
3D Design Services
View job
Sheet Metal CAD Designer – Manufacture-Ready Enclosure + Ongoing Work
Remote - Posted
Sheet Metal Enclosure
CAD Design & Manufacturing Brief
1. Project Overview
I require a relatively simple sheet-metal enclosure to be designed and prepared for prototype a...
Product Engineering Services
Mechanical Design Services
Mechanical CAD Design
Sheet Metal Design
Design for Manufacturing and Assembly
View job
How it works
Find hourly jobs
Top rated experts are regularly hired for hourly jobs & ongoing client work.
Fixed-rate jobs
Experts can browse & apply to fixed-rate work & quote on a flat-rate basis.
Design contests
Experts build a reputation and earn prizes by participating in design challenges.
About Cad Crowd
4.9/5.0
(Our client satisfaction)
G2 2022
Spring high performer
210,400
global members
33,386
projects delivered to clients
Trusted by
