https://adityachilka.com/writing/ Working notes on the engineering decisions behind connected hardware — IoT wireless, PCB design for manufacturing, edge AI/TinyML, and prototype-to-production. en aditya@rapidcircuitry.com (Aditya Chilka) Fri, 29 May 2026 09:00:00 +0530 https://adityachilka.com/writing/choosing-a-wireless-protocol-for-iot.html https://adityachilka.com/writing/choosing-a-wireless-protocol-for-iot.html Fri, 29 May 2026 09:00:00 +0530 BLE, Wi-Fi, LoRa/LoRaWAN, and cellular (LTE-M / NB-IoT) compared on range, power, bandwidth, and cost — a practical decision guide. https://adityachilka.com/writing/pcb-design-for-first-pass-manufacturing.html https://adityachilka.com/writing/pcb-design-for-first-pass-manufacturing.html Fri, 29 May 2026 09:00:00 +0530 A practical DFM checklist for getting boards right on the first build — footprints, fabrication margins, assembly, panelisation, and test access. https://adityachilka.com/writing/edge-ai-on-microcontrollers-tinyml.html https://adityachilka.com/writing/edge-ai-on-microcontrollers-tinyml.html Fri, 29 May 2026 09:00:00 +0530 When to run ML on the device instead of the cloud, what fits in a few hundred KB of RAM, and how to ship TinyML on the ESP32, STM32, and nRF52. https://adityachilka.com/writing/from-prototype-to-production-hardware-timeline.html https://adityachilka.com/writing/from-prototype-to-production-hardware-timeline.html Fri, 29 May 2026 09:00:00 +0530 The real stages — EVT, DVT, PVT — of taking an electronic product from working prototype to manufacturable hardware, and where schedules slip.