Michael Kraft - Entwickler

Hamburg, Germany

Experience

Oct 2024 - Jan 2025

4 months

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Bytec Medizintechnik

First successful solution by intensive filtering of analog signals in hardware, which reduced noise but drastically increased power consumption, reducing battery life from one year to about 10 days.
Proposed and implemented a combined high-speed sampling and digital firmware filtering solution, which extended calculated battery life to approximately 18 months.
Continued support until first clinical tests and TÜV approval for the final device filaxOne.

Jun 2023 - Jul 2023

2 months

Entwickler

Azorean Biodiversity Group CE3C, Universität der Azoren

Developed a pilot project for real-time communicating insect traps.

May 2023 - Jun 2024

1 year 2 months

Mitgründer

JSIO Lda

Developed a platform-independent interface to simplify and reduce the cost of new IoT hardware development.
Designed and launched a Modular Driver System (MDS) enabling standardized driver framework integration, automatic backend connectivity, and support for edge computing, AI and ML modules.
Used JSON exclusively as the data protocol to allow configuration by web developers with JavaScript or Python skills.
Prototyped on Espressif 32-bit MCUs, with firmware portable to embedded-Linux systems.
Secured ESA BIC Portugal funding in September 2023.

May 2021 - Nov 2021

7 months

Entwickler

ImpactWave

Developed a measurement device for LoRa(WAN) applications to optimize existing networks and detect planning weaknesses.
Designed hardware with Semtek LoRa module (433, 868, 915 MHz), RISC-V MCU with BLE radio and USB interface.
Created a native BLE Android mobile app with complex UI; later ported to iOS.
Implemented JSON-based USB (CDC ACM) communication via custom Python module for user programmability.
Delivered project independently.

Oct 2019 - Aug 2020

11 months

Entwickler

Q-Connex

Analyzed undocumented low-cost Chinese SoC components to enable firmware development.
Developed firmware in C++ featuring TLS-protected TCP socket, integrated MQTT server & client for simultaneous backend and mobile app connections.
Added UDP socket for provisioning broadcasting to facilitate device and app discovery.

May 2018 - Sep 2018

5 months

Firmware Developer

Plexus

Developed an embedded USB high-speed driver for the X-act® 7000 device from Dräger using an ARM Cortex-M4, handling synchronized video data and control protocol up to 80% USB bandwidth.
Implemented driver in C++ and integrated into the device’s µC-RTOS.
Developed a Windows application for unit and production tests.

Jan 2015 - Dec 2019

3 years

Firmware Developer und Interim CTO

3onics Systems Inc

Developed battery-powered DC motor control on ESP32-C3 with a self-learning, fast-adapting algorithm for precise speed regulation under variable conditions.
Integrated Bluetooth BLE GATT server for data transmission and Android/iOS app control.
Created genetic algorithm (AI) in firmware for control optimization.
Served twice as consultant and interim CTO for production.

Jan 2007 - Dec 2008

1 year

Firmware Developer

Società Italiana di Biologia Marina

Developed an underwater audio recorder with hydrophone, 24-bit delta-sigma ADC, and up to 220 kHz sample rate.
Implemented ring buffer for 80 s of continuous audio recording and triggered SD card logging.
Designed custom memory-management scheme for FAT32 filesystem to handle high data rates and prevent fragmentation.

Summary

Erfahrung in Soft- und Firmware Entwicklung:

Programmiersprachen: C und C++ (20+ Jahre), Java und Embedded Java (2 Jahre), Kotlin (2 Jahre), Rust (1 Jahr), C# (1 Jahr), verschiedene Assembler, Script Sprachen: Python (4 Jahre), JavaScript / Typescript (4 Jahre), LUA (1 Jahr)
RTOS: freeRTOS, uC, emdOS, mbedOS, Zephyr, VxWorks
Bare Metal: ARM Cortex M4 (STM), Prozess-optimierte Audio-DSP Anwendungen
Microcontroller: ARM Cortex M0 bis M7 (STM, NXP, Infineon, u.a.), Aurix (Infineon), ESP32 (Espressif), Risk-V (Espressif), Tensilica Xtensa, (Audio-)DSPs (Texas Instruments, SHARC), Verschiedene 8-bit und 16-bit MCUs
Register-nahe Treiber: DMA, USB, SPI, I2C, U(S)ART, I2S und TDM, CAN, LIN, RS485, und mehr
Single Board Computer: Raspberry Pi, Beaglebone, Verschiedene ARM Cortex A Derivate
Arbeiten unter Zertifizierung: ISO 13485 und IEC 62304 (Medizingeräte Software)
Embedded Linux: Yocto, Pantavisor (pantavisor.io/)
Netzwerk: Verschlüsselung unter SSL/TSL, AES u. a., Low Level TCP und UDP Sockets, HTTP(S), WS(S) (WebSockets), OTA Secure Firmware Updates, WebView API (HTML5, CSS, AngularJS)
Desktop-Apps: Linux, Windows
System-unabhängige GUIs: QT/QML
Kommunikations-Hardware: Wi-Fi (WLAN IEEE-802.11), Ethernet, inklusive TSN, Bluetooth & BLE, GSM: LTE Cat 1 bis 4 sowie NB-IoT, ZigBee, NFC, LoRa & LoRaWAN
Native Mobile Apps für Android: in Kotlin oder Java, inklusive C++ Einbindung
Versionskontrolle: Git (GitHub, GitLab, Bit Bucket), SVN (sehr ungern...)
Alle gängige Datenprotokolle: JSON, MQTT, MODBUS & ProfiBus, AT, Matter (CSA-IoT), und mehr, bitte anfragen
Unit- und Integrations-Tests
Hardware Bench Testing

Erfahrung in der Hardware Entwicklung:

Produkt-Entwicklung vom Prototypen bis zur Produktionsreife
Eigenes Labor für Prototypenbau und Test, mit allen gängigen Laborgeräten
Schaltungsentwicklung Digital, Analog, Mixed Signal, SPICE, PCB Layout und Board-Bring-Up
EDA Erfahrung: Altium, KiCad, Eagle, OrCad und Target
Robotik: Stepper-, Servo-, Sync- und BLDC-Motoren
Sensoren aller Art
3D CAD: Rhino, MOI, Plasticity

Weitere Kenntnisse und Erfahrungen: