Binary Clock

1N4007 – High Voltage, High Current Rated Diode

Resistor 100k ohm

Grove - RTC

Arduino Nano R3

LED (generic)

Resistor 10k ohm

<h3 >Introduction</h3>First of all, it is not a big deal. It is simply just a binary clock, that shows the time in binary format.I was always curious how much time would my brain need, to adapt a thing like this, how much time do I need to comfortably read the time from a binary display. The answer may be different to everyone, but I got used to it in a few days.I did not want to buy a complete binary clock kit that anybody can have, so I made one for myself. It has a cheap nano in it, with a 18 LEDs, diodes and an RTC.I also wanted the inactive LEDs to light just a little bit, thats why I needed the diodes and a few resistors.<figure><img src=https://projects.arduinocontent.cc/67543702-9485-4b26-99f0-e2930168a326.jpg /><figcaption> </figcaption></figure>The inside is not a beauty, I should have made it nicer, but I did not think of sharing it at that time. I used super bright LEDs, so I drive them with 10k resistors. The inactive LEDs are driven with 100k resistors.<h3 >The Program</h3>The program is not too complicated either. The first column shows the hours (0-12), the second shows tens of minutes /*I don't know how to call it, I'm not that good at english*/ (0-5), the third shows the rest of the minutes (0-9), the last two colums show the seconds the same way as the minutes are shown.The next edition if I ever make one will only have 3 columns, a DS3231 instead of a DS1307, a nicer faceplate and a better PCB.<figure><img src=https://projects.arduinocontent.cc/f8aabf1e-8289-45c4-a81d-dd216de78cf1.jpg /><figcaption> </figcaption></figure><figure><img src=https://projects.arduinocontent.cc/e3c2ace5-f75b-4a7d-bb8a-43866e8d56d6.jpg /><figcaption> </figcaption></figure><figure><img src=https://projects.arduinocontent.cc/e9fc2985-a0c4-45e3-b06b-15dd954b4214.jpg /><figcaption> </figcaption></figure>This is how I could achieve dim light on inactive LEDs. (Note: Maybe I connected it to 3V3 instead of 5 volts. It worked both ways, but as I remember the 5V solution was too bright and it was hard to tell if it is an active or inactive LED)<figure><img src=https://projects.arduinocontent.cc/2d69e641-9068-499b-88f5-55092ec09458.jpg /><figcaption> </figcaption></figure>

Binary Clock

Everybody here loves binary clocks. So do I, so I made one for myself.