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`Too many arguments to function hw_timer_t - Arduino Forum

Mon, 06 Apr 2026 04:08:00 GMT

too many arguments to function 'hw_timer_t* timerBegin (uint32_t)' 528 | timer = timerBegin (0, 80, true); // Alarm value will be in in us it looks like you are attempting to build code using ESP32 core 3.x which was implemented for ESP32 core 2.x have a look at the ESP32 core V3.x Arduino-ESP32 Timer API also worth looking at is Migration from ESP32 core 2.x to 3.x

ESP32-C3 Watch Dog Timer (WDT) - Arduino Forum

Tue, 07 Apr 2026 07:56:00 GMT

After many trials (thinking it was to do with the 'Reset WDT' statement), I finally realised that it Wasn't tying up the early #define CONFIG_FREERTOS_NUMBER_OF_CORES 1 statement with the .idle_core_mask = (1 << CONFIG_FREERTOS_NUMBER_OF_CORES) - 1, statement. I just manually Set it to 1 core for the ESP32-C3

Handling Timer Overflow Interrupts - Arduino Forum

Tue, 07 Apr 2026 06:15:00 GMT

I clear the timer, set it up in Input Capture Mode, set the pre-scaler to ClkIO/1024, and enable Overflow interrupts, as the event I'm timing can take up to 10 seconds, which means the timer may overflow twice. I maintain a software count, in a uint32_t that is increment by 65536 every time an overflow occurs.

Programming timer interruption - Arduino Forum

Mon, 06 Apr 2026 06:10:00 GMT

I'm posting here a simple project to create an interrupt timer on an ESP32 board for version 3.1.1 by Esspressif Systems. I had difficulties to find updated information to make this code, I hope it can be useful to someone ! This code creates an interrupt every 100ms and counts the number of interrupts. There is the code : #include "esp32-hal-timer.h" const int ledPin = 2; // pin of the LED ...

[Solved] Timer.h - Programming - Arduino Forum

Mon, 06 Apr 2026 00:26:00 GMT

As you understand I need a hardware timer (counting clock ticks). Millis () makes demanding to ckeck if "old value" is smaller than millis () value (normal run from start until rollover) or greater (1st time after rollover) before any compare.

Start a timer when button is pressed - Arduino Forum

Wed, 08 Apr 2026 20:55:00 GMT

I am creating a timer for a race. I have a photosensor that has a laser pointed to so when someone crosses the finish, it trips the sensor, and the system logs the racer's time. I am using millis() to time the race, but I need the timer to start when I push the button. I have tried using edge detection to start the timer, but the timer starts when the program starts, not when the program ...

12VDC timer - Arduino or off the shelf?

Sun, 29 Mar 2026 09:04:00 GMT

A timer is a clock and doesn’t have NO or NC, that is a switch. I suspect you want a relay that you can switch with a microcontroller in response to an input. That is relatively simple to do. Your other specifications and purpose you don’t share so only you will know what you need. Any arduino microcontroller can time things.

Watchdog timer WDT - prevent esp32 from stucking

Wed, 08 Apr 2026 20:26:00 GMT

Watchdog timer WDT - prevent esp32 from stucking Projects Programming arpa123 October 4, 2024, 3:27pm

Dual pulse timer (for spot welder) - Arduino Forum

Thu, 09 Apr 2026 00:08:00 GMT

The timer itself is trivial. Use millis () as the timer. I'd suggest three 10K potentiometers and a push button as input devices ( and an LCD 1602 with I2C backpack) for the display device. Get it working with a LED first then integrate it later with your SSR. Maybe it would be nice to synchronise the on/off transitions with a zero crossing if it is a heavy AC mains application.

Programmable switch timer - General Guidance - Arduino Forum

Thu, 02 Apr 2026 13:02:00 GMT

I have beginner skills on arduino, and I kind of jumped the gun into a project for school, to build a programmable switch timer, it has 4 buttons The switch is to be able to program on and off times of a bulb, it should be able to set 2 programs daily for each day of the week(i.e. i can manually program 2 on/off times for each day Monday through sunday).This also implies that date, time are ...