Ender 3 V2 Neo: internal Pi Zero 2 W mod
Klipper on a Pi Zero 2W hidden in the printer base, powered and serial-fed from the stock 4.2.2 display header over UART. Full build, firmware rebuild, Pi host setup, and troubleshooting.
Embedded
MeshCore on Heltec and nRF52: off-grid, encrypted, solar-powered
A LoRa mesh that needs no cell towers, no ISP, no permission. End-to-end encrypted, kilometre range on a coin cell. Here is the protocol I picked, the power math that decides everything, and what it extends into: sensor …
Hijacking the display header to embed a Pi Zero inside an Ender 3 V2 Neo
Klipper on a Pi Zero 2W hidden inside the printer base, powered and serial-fed from the stock display header. Plus direct-drive, dual Z, custom heatbreaks, and the mods that followed once the host was clean.
Building an ESP32 quadcopter from a public project, and what flight control actually feels like
I forked okalachev/flix, printed a frame, and learned the IMU pipeline the slow way. Here is what every step between 'motor spins' and 'thing hovers' actually costs.