Microcontrollers

• ESP32 — WiFi/BT, dual core, good peripheral set
• RP2040 — for USB HID projects and anything needing PIO
• ATmega328P — legacy projects and simple one-off boards

Languages

• C — primary language for ESP-IDF projects
• MicroPython — rapid prototyping on ESP32/RP2040
• Python 3 — tooling, scripts, KiCad automation

PCB Design

• KiCad 8 — schematic capture and PCB layout
• JLCPCB — fabrication and SMT assembly

Mechanical

• FreeCAD — parametric enclosure design
• Bambu Lab A1 Mini — FDM printing
• PrusaSlicer — slicing

Development Environment

• Neovim — editor
• Arch Linux — daily driver OS
• ESP-IDF v5.x — Espressif framework
• OpenOCD — JTAG debugging
• esptool.py — flashing and diagnostics

Test Equipment

• Rigol DS1054Z — oscilloscope
• TS100 — soldering iron
• Pinecil — travel iron
• Cheap logic analyser (Cypress FX2 clone)