CodeNSolder Archives
All the articles I've archived.
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A personal content aggregator for YouTube and RSS feeds with no recommendations, no tracking, no algorithm. Just the channels you follow.
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GPG has protected sensitive communication for decades. YubiGPG is an open-source toolkit that makes hardware-backed key setup reliable enough for everyone to do it right.
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On closing the gap between intent and output when working with AI agents — and what it means for how we hire, build, and encode our values into the tools we use.
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Building a motorised 3D printed turntable using Adafruit M4 Feather and DC motor FeatherWing to create smooth 360° showcase videos of 3D prints.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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Building iBow-T, a wearable OLED bow-tie conference badge using Arduino Pro Mini and SSD1306 display over I2C — a demo project for the CodeWear wearable electronics platform.
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A review of 'Designing Purpose-Built Drones for Ardupilot Pixhawk 2.1' by Ty Audronis — covering application-specific drone design for follow-me carts and autonomous RC vehicles.
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Smart Christmas lights with Neopixel addressable LEDs, MQTT control, Alexa voice commands, and a live Raspberry Pi camera feed — all built on ESP8266 and open-sourced under MIT.
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Comparing MQTT, CoAP, and Bluetooth Low Energy for IoT communication — a guide to choosing the right protocol for constrained devices, from Open Source For You Magazine.
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Recapping my PyCon India 2017 talk on getting started with embedded Python using MicroPython and CircuitPython, including a live Arc Reactor demo that got the room going.
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Hands-on review of the ESP8266-based WiFi deauthentication device with OLED display — covering beacon flood attacks, deauth range, and build quality issues found on the Tindie unit.
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Reverse engineering a Syska smart LED bulb by sniffing unencrypted BLE packets with Wireshark and Android HCI logs, then replicating the RGB control protocol using Linux Bluez tools (CVE-2017-18642).
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IoT security best practices for developers and startups — covering the do's and don'ts of securing connected devices, originally published as a guest blog on Mentor Graphics.
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Getting started with MicroPython on ESP8266 NodeMCU: running Python in a serial REPL on a microcontroller, as written for Open Source For You Magazine.
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An automated solar-powered plant watering system using soil moisture sensors, Arduino, and a servo motor — as published in Electronics For You Magazine, February 2016.
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Selected as a top-15 participant in Element14's Enchanted Objects Design Challenge with a smart wardrobe concept that suggests weather-appropriate clothing using IoT and text-to-speech APIs.
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Building RC foam airplanes inspired by FliteTest using locally-sourced Bio Foam, with a custom Arduino NRF24L01 remote controller designed from scratch when commercial options didn't fit.