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Program the esp32 ULP coprocessor in Arduino

The Eagle settings SparkFun uses for board designs

ESP32 ULP Coprocessor Helper

ESP32 ULP Co-Processor toolchain implemented in MicroPython

FreeRTOS Tick/Tickless via LPTIM

Yet another esp32 watch

A correct way to determine if two floating-point numbers are approximately equal to one another in Swift

ItsMrULPBot Is The Ultimate Logs To ULP ULP To Any Type Combo Maker Built With Telethon & Uvloop In Full Asynchronous Method By [@abirxdhack]

Examples of using the ULP Co-Processor of the ESP32 with simple pulse counting, which I extended for also saving the shortest pulse.

Water level monitor using open-source microcontrollers (Arduino, ESP8266, ESP32) and ultrasonic sensors HC-SR04 / JSN-SR04T / or TOF laser sensors VL53L1X / VL53L0X. Arduino Core & ESP-IDF implementations. For ESP32 available also with FreeRTOS. ESP8266 and ESP32 support for Ultra Low Power deep sleep app. ESP32 available with PHY Ethernet LAN8720

Migration of the original project [Waterius](https://github.com/dontsovcmc/waterius) to ESP32

An Ultra Low Power temperature logger based on the ESP8266 MCU.

ESP32 ULP example

Clean, dedup, search large ULP and log dumps without eating your RAM. Easy to use, easy to keep using.

M5Stack sprite+ULP-sound demo

Local-first, zero-dependency cost ledger for your AI coding agents. Reads the transcripts Claude Code / OpenCode / Codex / Gemini CLI already leave on disk — spend per repo, model, day, and git branch, with honest billed/estimated/unpriced provenance. No network, no account, no telemetry. ULP 1.0 reference implementation.

Test of ESP32 reatining RTC IO outpus in hibenation mode

ESP32-P4 Ultra Low Power Processor Library for Arduino

REGEX TOOL

Various ULPs (User Language Programs) for the Autodesk EAGLE