Debugging a phantom I2C bus lockup
Three weeks chasing an intermittent hang on a sensor bus. Turned out to be a pull-up resistor, a ground bounce, and a lesson in trusting the oscilloscope.
Writing
Articles
Notes on firmware, backend systems, and the craft of building reliable software.
8 min read →
Why your OTA update system will fail
Lessons from building firmware update infrastructure for 10k devices. Power loss, partial writes, and the importance of atomic commits.
10 min read →
Designing gRPC APIs for embedded clients
Protobuf on a microcontroller with 64KB of RAM. Trade-offs between code size, flexibility, and the convenience of generated code.
7 min read →
Real-time without an RTOS
Building deterministic timing on bare metal. Interrupt priorities, DMA chains, and why cooperative scheduling still has a place.
6 min read →
The case for boring infrastructure
After years of chasing the latest tools, I keep coming back to Postgres, systemd, and plain Makefiles. Here's why simplicity wins.
5 min read →