This project demonstrates how to use **Timer1 Overflow Interrupt** on the **ATmega328P (Arduino UNO)** to toggle an LED at precise intervals. The LED connected to **PB5 (Digital Pin 13)** toggles every 1 second using **register-level configuration** and **ISR**.

Simple security lock using the STM32 Nucleo-64 board that uses the MBED platform

Minimal Operating System for Student Purpose

using interrupt service routine for touch event

This library enables you to use Interrupt from Hardware Timers on an ESP32, ESP32_S2, ESP32_S3 or ESP32_C3-based board. It now supports 16 ISR-based timers, while consuming only 1 Hardware Timer. Timers' interval is very long (ulong millisecs). The most important feature is they're ISR-based timers. Therefore, their executions are not blocked by…

This library enables you to use Interrupt from Hardware Timers on an ESP32-C3-based board. These ESP32-C3 Hardware Timers, using Interrupt, still work even if other functions are blocking. Moreover, they are much more precise (certainly depending on clock frequency accuracy) than other software timers using millis() or micros(). That's mandatory…

This library enables you to use Interrupt from Hardware Timers on an ESP32-S2-based board. These ESP32-S2 Hardware Timers, using Interrupt, still work even if other functions are blocking. Moreover, they are much more precise (certainly depending on clock frequency accuracy) than other software timers using millis() or micros(). That's mandatory…

This library enables you to use Interrupt from Hardware Timers on an ESP32-based board. It now supports 16 ISR-based timers, while consuming only 1 hardware Timer. Timers' interval is very long (ulong millisecs). The most important feature is they're ISR-based timers. Therefore, their executions are not blocked by bad-behaving functions or tasks…

This library enables you to use Interrupt from Hardware Timers on an ESP8266-based board. It now supports 16 ISR-based timers, while consuming only 1 hardware Timer. Timers' interval is very long (ulong millisecs). The most important feature is they're ISR-based timers. Therefore, their executions are not blocked by bad-behaving functions or tas…

This library enables you to use 1 Hardware PWM module on nRF52832/nRF52840-based board, such as AdaFruit Feather nRF52832, nRF52840 Express, Itsy-Bitsy nRF52840 Express, etc. to control up to 16 or more servo motors.

This library enables you to use 1 Hardware Timer on SAMD21/SAMD51-based board, such as Nano-33-IoT, Seeeduino XIAO, Adafruit Itsy-Bitsy M4, etc. to control up to 16 or more servo motors.

This library enables you to use 1 Hardware Timer on ESP32, ESP32_S2, ESP32_S3 or ESP32_C3-based board to control up to 16 or more servo motors. Tested OK with ESP32 core v2.0.4 now

This library enables you to use 1 Hardware Timer on an ESP32_C3-based board to control 16 or more servo motors. Tested OK with ESP32 core v2.0.5

This library enables you to use 1 Hardware Timer on an ESP32_S2-based board to control up to 16 or more servo motors. Tested OK with ESP32 core v2.0.5

This library enables you to use 1 Hardware Timer on ESP32-based board to control 16 or more servo motors. Now supporting ESP32, ESP32_S2, ESP32_S3, ESP32_C3-based boards. Tested OK with ESP32 core v2.0.5

This library enables you to use Hardware Timers on SAMD21/SAMD51 boards to create and output PWM to pins. These PWM channels, using SAMD21/SAMD51 Hardware Timers, still work even if other functions are blocking. Moreover, they are much more precise (certainly depending on clock frequency accuracy) than other software timers using millis() or mic…

This library enables you to use ISR-based PWM channels on Teensy boards, such as Teensy 2.x, Teensy LC, Teensy 3.x, Teensy 4.x, Teensy MicroMod, etc., to create and output PWM any GPIO pin. It now supports 16 ISR-based PWM channels, while consuming only 1 Hardware Timer. PWM channel interval can be very long (ulong microsecs / millisecs). The mo…

This library enables you to use Interrupt from Hardware Timers on RP2040-based boards such as RASPBERRY_PI_PICO. These RPI_PICO_TimerInterrupt Hardware Timers, using Interrupt, still work even if other functions are blocking. Moreover, they are much more precise (certainly depending on clock frequency accuracy) than other software timers using m…

This library enables you to use Interrupt from Hardware Timers on an NRF52-based board using mbed-RTOS such as Nano-33-BLE. These nRF52 Hardware Timers, using Interrupt, still work even if other functions are blocking. Moreover, they are much more precise (certainly depending on clock frequency accuracy) than other software timers using millis()…

This library enables you to use Interrupt from Hardware Timers on supported Arduino boards such as AVR, ESP8266, ESP32, SAMD, SAM DUE, nRF52, Teensy, etc. These Hardware Timers, using Interrupt, still work even if other functions are blocking. Moreover, they are much more precise (certainly depending on clock frequency accuracy) than other softw…