In this project we will see how to build a programmable countdown timer in the range of 1s – 9999s which can be used in domestic or industrial applications as well as by beginners to learn how to assemble an electronic module and load a program. During the selected time interval, the system can power…
The main goal of this circuit is to save energy. So, I am not going to talk about arduino because the board itself has unnecessary power overhead for a final product. It is great for development. But, not very good for final projects running on batteries. I will use one for my POC but,…
In this project we see how to build an Arduino-based capacitive kitchen timer that allows users to interact via touch input. The finished device is driven by ATMega328PU (the same microcontroller on which Arduino UNO is based). You will need a few components, but the end result will be a unique gadget that will liven…
Thinking about what to do with a broken mouse and an LCD screen, I came up with the idea of making a kitchen timer. In this project the rotary encoder allows selecting the time values, the push button allows changing the states of the timer and the buzzer emits an alarm when the countdown is…
Resin 3D printers are finally cheap enough that peons like us can finally buy them without skipping too many meals, and what means we’re starting to see more and more of them in the hands of hackers. But to get good results you’ll also want a machine to cure the prints with UV light;…
“Twinkle, Twinkle, Little Star”? How we wonder why you’d resort to singing a ditty to time your handwashing when you can use your social isolation time to build a touch-free electronic handwash timer that the kids — and you — might actually use. Over the last few months, pretty much everyone on the planet has been…
Breakout board based on the integrated 555 (SMD version), one of the integrated circuits that made the history of solid-state electronics. The 555 is a timer that can be configured in various ways incorporating a pair of comparators whose outputs are connected to the SET and RESET inputs of an RS flip-flop, so as to create…
This circuit provides timed access to pay services such as games, showers, blows dryers and various types of vending machines, thanks to a coin counter and a display interface. In the applications involving the paid access to certain products or services, the electric or electronic “coin-operated actuators” are used, which are devices capable…
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