Work
Case studies
What I built, the hard part, and how it turned out. Clients under NDA are shown by sector, not by name.
More topics (76)
Magnetic Hall-Effect Keypad Gamepad — Hardware & Firmware
Japanese gaming hardware client
Hardware design and firmware for a magnetic keypad gamepad: 16 analog Hall-effect keys read through two multiplexers by DMA-driven ADC sampling on an STM32F407, with an OLED and rotary-encoder settings menu and USB to the PC.
Air-Gapped Crypto Wallet — Hardware Security
XDC Network
Offline hardware wallet with secure-element-based key protection, built for XDC Network — private keys are generated, stored, and used for signing entirely inside an ATECC608A secure element and never leave the air-gapped device.
Smart Meter Firmware — DLMS/COSEM
Utility sector · client under NDA
Standards-compliant metrology and multi-channel communication firmware for utility-grade smart electricity meters, built on the Hitrend HT5023 metrology MCU.
Next step
Tell me what you are building.
Fixed-price projects and hourly work, for clients anywhere. Send the scope and I will reply by email.