Posts

A weekend project: 3D printing an owl tea light with programmable NeoPixel LEDs, controlled by Adafruit Gemma M0 and CircuitPython with capacitive touch input for color cycling.

How to use a Raspberry Pi as an SWD programmer with OpenOCD to flash the CircuitPython UF2 bootloader onto a Particle Xenon (Nordic NRF52840) board.

Using CircuitPython with an ESP32 co-processor to build an internet-connected conference badge (PyBadge) with MQTT-controlled name display and NeoPixel RGB color picker via Adafruit IO.

The clean way to set up a Raspberry Pi headless — drop a wpa_supplicant.conf and an empty ssh file on the boot partition to enable WiFi and SSH before the first boot, no monitor needed.

A practical guide to managing project dependencies with Git submodules and Google's Repo tool, plus bonus advanced concepts — git remotes and cherry-picking for multi-developer open source workflows.

Using embedded Linux in commercial products: SoC selection, the Yocto Project build system, cross-compilation, and system architecture — from my talk at the ILUG-Delhi meetup.

Founding KnifeEDGE, a community RC aeromodelling club: how the inaugural meetup at Gautam Buddha University brought 20 pilots together to build, fly, and crash model aircraft.