Michael Kraft
Entwickler
Experience
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.
Entwickler
Azorean Biodiversity Group CE3C, Universität der Azoren
- Developed a pilot project for real-time communicating insect traps.
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.
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.
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.
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.
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.
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:
- Software Architekt in verschiedenen Projekten und Produktentwicklungen
- Sicher im Umgang mit Kunden und Stakeholdern
- Führungsrolle in internationalen Teams, viel Erfahrung mit Praktikanten
- Management Tools wie Polarion, Confluence, Agile/Scrum, Jira
- Mehrfache Startup Erfahrung, ausgesprochener Problemlöser
- Autor englischsprachiger Dokumentation und Fiktion (Novel: "The Bomb")
Languages
Education
TU Berlin
Telekommunikation · Berlin, Germany
Certifications & licenses
IEC 62304
ISO 13485
Similar Freelancers
Discover other experts with similar qualifications and experience