Mateusz L. Profile

5.0

(1 review)

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$40 USD / hour

warszawa,

poland

$40 USD / hour

It's currently 3:17 AM here

Joined March 30, 2016

0 Recommendations

Mateusz L.

@MMElectronic

5.0

(1 review)

3.4

$40 USD / hour

warszawa,

poland

$40 USD / hour

100%

Jobs Completed

100%

On Budget

100%

On Time

N/A

Repeat Hire Rate

Electrical engineer, embedded systems developer

I'm professional electrical engineer specializing in development of embedded systems with strong focus on ARM family of micro-controllers. In embedded world I'm equivalent of full stack developer. I can formulate project technical specification, design PCBs, develop and deploy firmware and prepare manufacturing process. My strong points are wireless communication technologies (especially Bluetooth LE) and embedded cryptography solutions. I have also worked with Sigfox, LORA, NB-IOT and LTE-M devices and have working knowledge of certification and design requirements. I'm also experienced in low power devices (multiple years of life on single charge). As for relevant experience I've designed, built and developed hardware and firmware for modular IoT development kit 'Smablo' ([login to view URL]). The heart is Nordic nRF52 Bluetooth LE MCU supplemented with over 30 sensors/actuators with the complete set of drivers in form of SDK. All Smablo components were mass produced based on my design and assembly documentation. During this project I've also worked on a projects for a few notable companies like Intel, Samsung Poland, Orange Poland and others. We've provided a complete package designing product from an idea to fully working device ready for market. Recently I've designed debugged and implemented real time electric grid monitoring system based on Intel Apollo Lake platform for one of the biggest Nordic electric companies. This amounted to designing whole PC motherboard, custom set of sensor interfaces, uninterruptible power supply with battery management, custom PC BIOS and measurement firmware. I was also responsible for complete manufacturing and assembly documentation.

See all Microcontroller Developers in Poland

Contact Mateusz L. about your job

Portfolio

Develop hardware platform, cryptography algorithms and firmware for object tracking network that respects user privacy. Assets have attached Bluetooth Low Energy (BLE) beacons. Each beacon emits ID that changes every couple of minutes. IDs are captured by anyone that has compatible app on their phone along with phone position.

Clever crypto solution I've custom designed for this project allows beacon owner to distinguish it among pool of seemingly random IDs and track last known position.

Nordic nRF52 MCU was used as a hardware platform. I've done PCB design and layout.

Another important aspect was to make sure that beacon runs for years on single battery. I was responsible for power profiling and optimization.

Private object tracking network

My job here was to design develop and manufacture custom industrial computer and software.

Platform was based on Intel Apollo Lake qSEVEN module. I've designed motherboard for this module housing all required support circuits and custom application specific measurement hardware.

Then I developed custom BIOS so Intel SOC behavior was better suited for this application.

Last but not least I've developed custom Linux distribution based on Yocto Linux that contained drivers and application specific software.

Also part of the job was custom cooling solution and extensive burn in testing that proved stabiliy in wide range of working conditions.

Intel based industrial computer

The project goal was to design custom motherboard for ARM compute module. The motherboard contained project specific measurement hardware. SOPINE64 was selected as a compute module.

I've designed and validated the motherboard.

Also I've developed custom Linux distribution based on Buildroot that contained drivers for all custom hardware and measurement applications.

ARM compute module motherboard

This is the most challenging PCB layout I've done recently. All electronics were fitted within 20mm diameter and very flat. Device contains Bluetooth Low Energy MCU, measurement sensors and STM32 application processor.

Another difficult thing in this design was fitting within power budget. I was able to go as low as single microamps average power consumption and use very flat battery while maintaining couple of years runtime.

Ultra small medical device

Electrical Engineering eagle-pcb, electrical-engineering, bluetooth, embedded-systems, embedded-c, electronics
Goal of the project was to create rapid development platform for electronics. Our target was to allow people who don't know how to do hardware get into this business without any learning curve.

This materialized in form of over 50 modules (sensors, human interface, actuators) that share common electrical interface and can be freely mixed and matched.
Heart of the system is a Nordic nRF5 MCU that runs application code.

In order to simplify coding I've also created SDK of over 60 drivers and demonstrated their usage with over 100 example projects.
Example code is not typical 'blink a LED' but is modeled after real IoT use cases such as air pollution sensors or smart keyfobs.

Modular IoT development platform

Electrical Engineering pcb-design, embedded-systems, embedded-c, electronics, eagle-pcb, cryptography.
Goal of the project was to create electronics and firmware that is a crossover between smart lock protected box and vending machine. It used Bluetooth Low Energy for communication and Nordic nRF5 family MCU as its 'brain'.
I've done PCB design, electronics prototyping and firmware development.
I've also designed cryptography that allows only properly authenticated user access the lock controls.
Another cool part I've done in this project was localization / inventory system based on Bluetooth Low Energy. After closing the lock device was able to take inventory of its contents based on signal of BLE beacons attached to each item

Smart lock and vending machine

Private object tracking network

Intel based industrial computer

ARM compute module motherboard

Ultra small medical device

Modular IoT development platform

Smart lock and vending machine

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5.0

$476.62 USD

Project for Mateusz L.

Mateusz is very knowledgable in his field and will definitely work again with him in the future!

Microcontroller

Electrical Engineering

Mechatronics

PCB Layout

3D Animation

+1 more

Peter K.

@pkolarov

•

5 years ago

Experience

Smablo

Jun 2016 - Present

I've desinged a modular IoT system based on Nordic nRF52 with over 50 sensor shields. Check out our initial devkit release: https://www.smablo.com/products.html

Seguro Technology Sp. z o.o.

May 2013 - Jun 2016 (3 years, 1 month)

Seguro provide a secure communication solution for IoT. IoT communicates with more and more radio communications. This method of communication is not safe because it is vulnerable to the possibility of an attack. A secure communication protocol is the key to success in the IoT industry. In seguro, I was responsible for the design of the entire product and its implementation in serial production.