Automatic Pet Feeder using Arduino

Today we are building an Arduino based Automatic Pet Feeder which can automatically serve food to your pet timely. It has a DS3231 RTC (Real Time Clock) Module, which used to set time and date on which your pet should be given food. So, by setting up the time according to your pet’s eating schedule, the device drop or fill the food bowl automatically. In this circuit, we are using a 16*2 LCD to display the ...

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Arduino on Internal Oscillator Crystal as Clock Source

Story I have been working out ways to make a minimal Arduino to fit in the smallest space possible, and limit the power consumption of the microcontroller. (You can go through this project for more info about reducing power consumption at: Reducing Arduino Power Consumption). You can assume this one is an extended version of that project. An Arduino consists of many components like linear regulator, USB to ...

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Waterproof 10 Minute Timer

Story I went for a shower one day, was getting late for office. Running tight on time, but I didn't want to come out of hot shower in cold morning. Without any clock in my bathroom I was saying to myself "Lets enjoy the shower for few more minutes, I might be over estimating the time". Result: I got really late to my office. Solution: Put a clock in your bathroom. Nooooo. Why would I put a clock in my bathr ...

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Do You Have The Time? DS1307 RT Clock + Arduino

Most microcontrollers are time-agnostic, meaning they are unaware of the time around them, but that’s ok as most things we make have no need for it. But… every once in awhile you come up with an idea that requires knowing the actual time. Mostly this is used for data-logging, or creating this year’s newest clock. (Why do we come up with harder ways to tell time?) But whatever your reason, we have a solution ...

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IQ Alarm clock using Arduino for heavy sleepers

Raising from bed can be the most painful thing you could ever do. We often set alarms to wake up but ends up in snoozing it out or even kick the alarms away. To address this we have come up with an Arduino project ” IQ alarm clock ” which will annoy you until you wake up. The most highlighting thing about this alarm is that it will ask you a question once it starts sounding and you can turn it off only if y ...

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Interfacing Arduino with DS1307 real time clock

This topic shows how to interface Arduino with DS1307 real time clock to make a clock and calender. To understand the project and code easily you have to read the datasheet of the DS1307. DS1307 Pin assignment: The picture is taken from ds1307 datasheet and it shows the pin assignment of our chip RTC: Arduino real time clock using DS1307 circuit: On the circuit schematic there are two buttons used to set th ...

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Arduino Real Time Clock Using DS1307

This topic shows how to interface Arduino with DS1307 real time clock to make a clock and calender. To understand the project and code easily you have to read the datasheet of the DS1307. DS1307 Pin assignment: The picture is taken from ds1307 datasheet and it shows the pin assignment of our chip RTC: Arduino real time clock using DS1307 circuit: On the circuit schematic there are two buttons used to set th ...

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Fast Counter

Every once in a while there is a question in the Arduino forum on how fast you can toggle an IO pin. The answer to this question depends on your line of thinking / what you will allow as an answer. So here is my take on performance optimization for its own sake. First of all there are pins PB6 and PB7 which are connected to the crystal. Since these pins can be used as IO pins (but only if running without cr ...

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Zeitfluss – Flow of Time

About this project Reasoning about time by printing onto the surface of a river Maybe you know situations when time's running up. In German there is a metaphor for that and translated it would be something like "time trickles away“. Having this saying in mind and thinking of how to 'imagine' time the following idea turned up: I would like to generate a situation, where people are able to let time pass by wi ...

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Arduino Astronomical Clock

This product allows you to set separate turn-on and turn-off times and those repeat every day. The disadvantage of this product is that, as the seasons change, you need to constantly adjust the turn-on and turn-off times. As illustrated in Figure 1, the variation over the year (in sunset time in this example) is very significant even at my Northern California latitude, with almost three hours difference bet ...

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Arduino HackHD Time-Lapse Dolly

Story This project was inspired by someone else who made an Arduino time-lapse dolly (suprise surprise). However that project was published some years back and I have lost the link to it. Of course time-lapse is not that exciting anymore but 5 years ago it was. The thing about this specific project that really got my attention was the fact that the camera not only could slide horizontally but could rotate a ...

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Complete Digital Clock including Alarm and Motion Sensor

I have done several designs of digital clocks for Arduino using LEDs and LCD displays, but this one is more special because I added other features like alarm and motion sensor (PIR). Main features PIR (Presence Infrared Sensor) RTC (real-time clock) Alarm Temperature Humidity Water dew point Encoder to set the time and alarm Permanent memory for time and alarm data even when the power supply is off Main fun ...

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