Hi Folks, I am using Esp32 Dev Module to develop the timer interrupt code .but when I am using timerBegin() function I am getting errors like that: timerBegin() function can accept only one argument.Please help me out this problem.For you reference I am posting my code. More on forum.arduino.cc

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 someo… More on forum.arduino.cc

Hi, I have a problem understanding the timer example found in the ESP32 arduino core 2.0.14. The code doesn't say which timer is being used as far as I can see. Here's the code: /* Repeat timer example This example shows how to use hardware timer in ESP32. The timer calls onTimer function every ... More on forum.arduino.cc

Hey! That’s an interesting project, although maybe a little ambitious for a beginner, but I don’t think there’s anything impossible about it. Let me try answering some of your questions: -> Since you need relatively few modules and nothing too “heavy”, like TFT displays or data logging, you should be fine with an Arduino. Two points to consider: number of pins you will need for all your projects components and form factor. Here is an Arduino comparison guide I made recently. To pack more pins in a smaller space, you could also use something like a Wemos D1 ESP32. -> Although there may not be this exact project online, you should be able to find somewhat similar examples using buttons and LEDs and put them together to get what you want. It will take some time making the code, of course, but nothing impossible. I’d pay more attention to your power setup - check if someone put together the modules you need for battery use and recharge before. -> You can calculate power consumption by adding estimates from individual modules - should be there online - and see how quickly will it drain your battery. An 18650 is a chunky boy, so I would expect it to run for a couple of hours. Using a LED at a lower voltage can actually extend your battery, as it’ll consume less power, albeit be less bright as a result. More on reddit.com