PAK-EL LAB is an electronics engineering studio offering PCB design services, embedded firmware development and complete IoT product development. We support hardware design engineering, ESP32 and STM32 firmware, Flutter IoT applications and electronics prototype development — from first concept through PCB manufacturing support.
A single engineering team across hardware, firmware and software — so your project doesn't get lost between vendors.
Hands-on experience designing circuits, firmware and connected products across multiple industries.
PCB design, embedded firmware, IoT systems, mobile apps and web development under one team.
Support from initial requirements and prototyping through to production-ready manufacturing files.
Structured communication and documented technical deliverables at every project stage.
Comfortable working remotely with clients across different countries and time zones.
Client designs, files and project details are treated as confidential throughout the engagement.
Schematic capture, PCB layout and hardware engineering for embedded, power and wireless electronics — designed for manufacturability from the first revision.
Schematic design and PCB layout for embedded, analogue and mixed-signal electronics, built with manufacturing in mind.
Sensor monitoring, control and automation hardware built for industrial environments.
4–20mA signal generation, reading and calibration for industrial sensor interfaces.
Laser distance measurement hardware for hazardous-area oil & gas environments.
Custom PCBs and control electronics for cars, motorbikes and vehicle accessories.
C and C++ firmware for ESP32, ESP8266, STM32 and Arduino platforms — from sensor drivers to production-tested, OTA-ready firmware.
C/C++ firmware for ESP32, ESP32-S3, STM32 and Arduino-compatible hardware — the discipline behind every board we design.
ESP32-S3 firmware and UWB ranging for real-time positioning and wireless IoT nodes.
WS2812 / NeoPixel firmware for addressable RGB lighting and sound-reactive effects.
Firmware and companion apps for wearable and sound-controlled electronics.
Complete IoT systems — hardware, firmware, cloud connectivity and dashboards — for remote monitoring and connected products.
End-to-end IoT products combining hardware, firmware, cloud connectivity and mobile dashboards.
Long-range wireless telemetry for remote sensor nodes and satellite-assisted links.
Rugged monitoring electronics for marine and offshore environments.
Flutter apps and technical websites that connect to your hardware — device control, dashboards and business-ready websites.
Flutter IoT applications for BLE / Wi-Fi device control, dashboards and hardware monitoring.
SEO-ready business and portfolio websites for technical companies.
Turning a design into a working, validated electronics prototype — bring-up, testing and production-readiness review.
Hands-on prototyping and testing to validate a design before it goes to production.
Practical support once the design is finished — BOM optimisation, sourcing and manufacturer coordination.
Practical support to get your PCB design ready for manufacturing and assembly — part of our PCB manufacturing support service.
A structured process from first conversation to final delivery, so you always know what stage your project is at.
Understand your goals, constraints and technical requirements.
Define the hardware, firmware and software architecture and select suitable components.
Develop schematics, circuit design and initial technical documentation.
Share the design for your review before moving to layout or firmware.
Execute board layout or embedded firmware development based on the approved design.
Verify functionality, communication protocols, timing and performance against requirements.
Prepare Gerber, BOM, pick-and-place and other production-ready files for handover.
Available for follow-up questions, revisions and support after delivery.
Straight answers about PCB design, embedded firmware, IoT development and how we work. For general questions about PAK-EL LAB, see our main FAQ page.
We provide schematic capture, PCB layout, multilayer and high-current PCB design, power-supply design, component selection, footprint creation, DFM review and Gerber/BOM file preparation for embedded and IoT hardware.
We primarily work with ESP32, ESP8266, STM32 and Arduino-based microcontrollers, and can evaluate other MCU families depending on project requirements.
Yes. We handle PCB design and embedded firmware together, which helps avoid integration issues between the board and the code that runs on it.
Yes. We support projects from requirements and architecture through schematic design, PCB layout, firmware development and a working, tested prototype.
We work with industry-standard PCB design tools and select the tool that best fits each project's complexity and your file-format preference.
In most cases, yes — we can typically deliver source files in common formats such as KiCad, EasyEDA or Altium. Confirm your preferred format when starting a project.
Standard deliverables include schematics, PCB layout files, Gerber files, a BOM and, where applicable, pick-and-place files for assembly.
Yes. We review existing schematics and PCB layouts, identify issues and provide corrected files or a written list of recommended changes.
Yes. We design multilayer boards and high-current PCBs, including power-supply and power-electronics layouts, with attention to thermal and current-carrying requirements.
Yes. Component selection and availability verification, including alternative parts, is part of our standard hardware design process.
Yes. We can prepare BOM and assembly files formatted for LCSC sourcing and JLCPCB assembly workflows.
Yes. When a component isn't in a standard library, we create and verify a custom schematic symbol and footprint for it.
Yes. We develop C/C++ firmware for ESP32, ESP8266, STM32 and Arduino platforms, including drivers, communication protocols and application logic.
We implement SPI, I²C, UART, CAN, RS-232, RS-422, RS-485, USB and Ethernet interfaces, depending on the project's hardware.
Yes. We integrate Wi-Fi, Bluetooth/BLE, LoRa, GPS and GSM modules into both the hardware design and the firmware that drives them.
Yes. We build Flutter Android and iOS apps for BLE and Wi-Fi device control, including dashboards and real-time monitoring.
Yes. We develop web dashboards for device monitoring, data visualisation and configuration, connected to your device over MQTT or an API.
Yes. Prototype testing, board bring-up, interface testing and debugging support are part of our standard development process.
Yes. We support board bring-up, testing and troubleshooting once your PCBs come back from manufacturing.
Yes. We prepare manufacturing files, optimise the BOM and support communication with your chosen manufacturer or assembly house.
Cost and delivery time depend on project scope, complexity and component availability. Share your requirements through WhatsApp or the contact form and we'll provide a scoped estimate.
A clear description of what the product should do, any known constraints such as size, power, interfaces or environment, and, if available, existing schematics, references or sample code.
Yes. We can sign a mutual NDA before reviewing sensitive project details.
Yes. Client designs, files and project details are treated as confidential and are not shared with third parties.
Yes. We work with startups, individual inventors and established companies, and can scope a project to match an early-stage budget.
Yes. We work remotely with clients across different countries and time zones, communicating primarily by email and WhatsApp.
We can often accommodate urgent requests depending on current workload and project complexity — contact us early so we can confirm feasibility and timeline.
Yes. We offer ongoing technical support for firmware updates, design revisions and troubleshooting after delivery.
Yes. We review existing hardware, firmware or app code and can continue development or correct issues in a partially completed project.
Send your project details through the contact form or WhatsApp, including your requirements, timeline and any existing documentation, and we'll respond with a scoped estimate.
Send your requirements and get a scoped technical response from our engineering team.