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I am Josuah Demangeon

How may I help you? Mail me at me@josuah.net.

Hardware

SDK for multiple microcontrollers, also called "firmware", "core", "library". Very few is ready for use (try libopencm3 instead) but they could help one to understand some hardware works:

AVR: ATMEGA328P

ARM: NRF51822, RP2040, SAMD09, SAMD21, STM32F411, STM32L011

XTensa: ESP32

RISC-V: FE310G002, GD32VF103, ESP32-C3

Screens: LCM1602, SSD1306

Boards: micro:bit-v1.5, Sipeed-Longan-Nano

Architecture: interrupts, AVR

Protocols: USB

Software

My small tools: notmarkdown, ics2txt, sni-shunt, passlock, netini, ploot, mailtube

Other's software: awk, jj, tinydns, qmail