ESP32 PCB Design, Layout, and Prototyping Services

Adequate Infosoft is a global custom software and IoT development company specializing in end-to-end ESP32 developer services.

With our extensive experience in designing embedded hardware, developing custom firmware and facilitating seamless integration of IoT technologies, we facilitate the development of innovative smart solutions that convert complex technical concepts into fully marketable, scalable solutions.

From the initial schematic configuration on your printed circuit board layout to the final secure firmware code, we facilitate the development of your IoT innovation through the complete life cycle of your project.

The ESP32 in the modern industrial environment serves as the foundation of the Industrial Internet of Things (IIoT) rather than just a microcontroller.

In industries ranging from agriculture to medical devices to factory automation, there is a demand for specialized PCB design services as a product moves from prototype to mass production.

Our specialized ESP32 PCB layout, prototyping, and design services are tailored to meet the demands of a variety of industries to ensure that your hardware is just as strong as your software.

ESP32 PCB Design

Common Espressif Controllers Used in Our PCB and IoT Projects

using popular Espressif controllers for IoT and wireless products. Our team has strong experience building reliable hardware around the following controllers:

Controllers we typically utilize

ESP32

A dual-core Wi-Fi and Bluetooth system-on-chip (SoC) used for versatile IoT devices.

ESP32-S2

A secure Wi-Fi microcontroller (MCU) used for IoT connectivity.

ESP32-S3

An Artificial Intelligence-enabled MCU supporting both Wi-Fi and Bluetooth Low Energy (BLE).

ESP32-C3

A low-power, RISC-V based MCU with Wi-Fi and BLE support.

ESP8266

A low-cost Wi-Fi component for connected devices.

Our designs focus on optimal RF layouts, stable wireless connectivity, low-power consumption, and a production-ready printed circuit board (PCB) evolution to produce reliable IoT Products.

Case Study: High-Density ESP32-S3 Rigid-Flex System Design

Adequate Infosoft had taken on a challenging, high-complexity hardware development project involving two separate but interrelated designs: a dense 4-layer rigid PCB (Design 1) acting as the central processing unit and a miniaturized 2-layer flexible PCB (Design 2).

As part of the overall project challenge, an additional factor affecting the project was finding a way to retain RF performance for both Wi-Fi/Bluetooth, as well as for NFC, while keeping the overall design of both designs within the constraints of a single compact 80mm x 30mm foot-print. In addition, the designs were to be manufactured using JLCPCB PCBA manufacturing processes.

4-Layer Rigid PCB Layout (Design 1)

The team's 4-layer stackup was purpose-designed to allow the placement of the ESP32-S3 and components on both sides of the board.

RF and Antenna Performance:

To better the RF performance of the ESP32-S3 our design team positioned the ESP32-S3 at the edge of the board with an adequate keep-out zone. A custom designed PCB trace antenna was included as part of the PCB design for the NFC reader with controlled 50 Ω impedance routing, which enabled the NFC induction loop to have the best possible read range, the custom trace antenna also helps prevent high-speed USB-C data lines from impacting the NFC operation.

Density Efficiency:

Both the USB-C, MicroSD and Real Time Clock (RTC) components were routed on the inner layers as power and ground planes, this created a "Faraday cage" which minimizes EMI (Electromagnetic Interference); this is important because of the dense placement of the Flexible Printed Circuit (FPC) connectors.

Design for Manufacturer (DFM) for JLCPCB:

The team utilized IPC-7351 standard footprints and created specific CSVs for use by JLCPCB for Bill of Materials (BOM) and Centroid (CPL) files that allowed for 100% automated assembly accuracy.

4-Layer Rigid PCB Layout
Ultra-Miniature Flex PCB

Ultra-Miniature 2-Layer Flex PCB (Design 2)

The 2nd design required very precise component placement, as there are three components needing to fit onto a 12mm x 8mm flexible board.

Flexibility & durability

We used a polyimide base with rounded ends on the traces to reduce the chance of stress fracture on the mechanical connections as they are bent for connecting to the rigid board using an FPC connector. The design was optimised to meet the bend radius requirements of connecting to the rigid board.

Precision for assembly

Due to the extremely small size of the PCB, it was panelised for SMT assembly to allow all three components to remain in alignment during the reflow.

Prototyping And Technical Deliverables

Our workflow focused on "Right-First-Time" manufacturing:

3D Validation:

Using high quality 3D renders allowed us to validate all of our component clearances. Specifically validating our dual sided component placements and number of USB-C ports and microSD port/slot clearances.

Firmware Sync:

As a full-fledged ESP32 firmware developer consulting service, we verified the pin mappings of the S3 module to its schematic which allowed us to make sure that the UART/USB-Serial Bridge and RTC interrupt pins were set up for hardware optimization. This is very critical so we did this process before any fab runs.

Prototyping and Validation

Outcomes & Value Added

Through utilizing Adequate Infosoft's extensive knowledge base in the design and manufacture of ESP32-based systems, we provided our client with a complete solution for their production needs. By providing pre-verified Gerber X2 files and corresponding assembly data formatted for a specific SMT production process at JLCPCB, we provided our client with the ability to produce products in a timely manner, resulting in zero manufacturing delays.

Our ESP32 PCB Design, Layout, and Prototyping Development Services

Industry-Specific PCB Design Expertise

Every industry has unique electronic requirements. We don't believe in a "one-size-fits-all" layout. Our design philosophy reflects that fact: every industry has unique characteristics.

Industrial Automation

High voltage isolation & incorporates din rail mounted connectors with rs485/modbus connections designed into the layout.

Consumer Electronics/Wearable's

Ultra-compact 4-6 layer HDI (board) boards and rigid flex designs created for your requirements.

Smart Agriculture

Low power 'deep sleep' mode designs and protects outdoor environmental sensors from mechanical damage during transportation and/or re-using.

Medical/Healthcare

Assured precision bio-telemetry via compliance with strict requirements governing isolating signals & providing noise free.

High-Performance RF and Antenna Design

ESP32's primary use case is as a connectivity device. However, there is a lot of electrical noise in many industrial applications.

Controlled Impedance Routing

To provide as great a Wi-Fi/Bluetooth range as possible, we implement 50 ohms of controlled impedance routing.

Antenna Diversity

We optimize the RF path to minimize the likelihood of signal drops in noisy industrial areas regardless of whether an internal PCB trace antenna or an external high-gain antenna via U.FL/IPEX connectors is required.

Prototyping: From Idea to Testing

A prototype is only successful if it works and remains functional! Our prototyping service is based on the "V" model of development and includes:

Designs for Manufacturing

Schematics that provide a logical-flow of how the prototype will function based on common industrial components that have been used multiple times for many years.

Rapid Surface Mount Technology (SMT) assembly

By developing small batches of prototypes using SMT technology, we can produce prototypes that are exactly how they would be in mass-production.

Testing

We run thermal cycling and power-surge tests on the prototype to ensure that the ESP32 will not experience a failure due to these conditions.

Enhanced Signal Integrity & EMI/EMC Compliance

Compliance is a priority in engineering to satisfy E-A-T standards. Most garage designs don't pass FCC or CE certification because of radiated emissions.

Layer Stackup Optimization

Dedicated power and ground planes are utilized, providing shielding for sensitive analog signals from high-speed digital switching.

Thermal Dissipation

ESP32 chips with heavy WiFi usage can generate operating temperatures between 40 and 65 degrees Celsius, as thermal visa and strategic copper pours are created to transfer heat away from silicon increasing the longevity of the device.

Comprehensive Service Comparison

Feature Consumer Grade Our Industrial Grade
Operating Temp 0°C to 40°C -40°C to +85°C (Extended)
Power Protection Basic Fuse TVS Diodes, Opto-isolation, & LDO Filters
PCB Layers 2-Layer (Noisy) 4 to 8-Layer (Clean Signal)
Certification None Designed for FCC, CE, & RoHS

Reasons to Trust Our Design Services

Our team is knowledgeable, competent, and trustworthy (E-A-T) who will provide you with the best possible support for your hardware project.

You Own Everything

You're entitled to all of your design files including the Gerber files, the Altium/KiCad source files, and the Bill of Materials (BOM).

Component Lifecycle Management

We only use components that have a minimum of 5-10 years of expected production, so that your product will not become obsolete overnight.

Security Integration

We take advantage of the hardware acceleration on the ESP32 to implement AES-256 encryption and Secure Boot functions on the ESP32 to keep your Industrial data private.

What Our Clients Say About Us

Client satisfaction is our ultimate goal. Here are some kind words of our precious clients they have used to express their satisfaction with our service.

Leadership That Leads Worldwide

With a physical presence in over 15 countries and a global footprint spanning 25+ countries, we are ready to serve you anywhere. Location, language, or culture is never a barrier, because our global team can work with you in your language. Our strong international team ensures seamless collaboration across borders We have a strong tech team, highly recognized in their domains, with extensive technical expertise.

Why Choose Us ?

We endow businesses with flexible engagement models based on their unique needs. Our strength lies in state-of-the-art technology and affordable consulting services. Try us for fast POCs, full-fledged applications, or technology consulting. Always available for your service.