![]() The countdown will automatically change to suit best suit the time left until the event. ![]() ![]() I know it is inconvenient for the device to require 2 plugs, and take up an entire outlet, but it is the safest way of construction. Use a 5v USB power block (brick) to provide the Arduino with power. More paper will produce a more warm, but dulled display. I also suggest taping a slip of tracing (or parchment though I haven't tried) paper to the matrix as it softens the irritating light and somewhat conceals the unused LEDs. ![]() I have yet to create a formal enclosure for this device, but my advice is to use the packaging of the LED Matrix to enclose the Arduino, RTC, and extra wiring, and then mount the panel on top using the magnetic screws provided. Once these variables are changed and the libraries are added, upload the sketch to the Arduino. In the Arduino IDE go to Sketch->include library->add zip library and import the library. Then to import the Time library, go to, download as a Zip file. then inport Adafruti GFX library and DS3231 library. go to Sketch->include library->manage library. Start by keeping it below 10.īefore the code can be uploaded, some libraries need to be added. The RGBPulseSpeed can also be changed to speed up or slow down the RGB text color cycle. These can both be found outlined by comments at the top of the sketch. The wiring for the RTC should stay the same.Ĭopy the "Arduino Code" from the repository linked to in the description and paste it into your Aduino IDE.īefore uploading, change the date and time information of the event being counted down to as well as the message to display once the event occurs. The finished wiring of the cable should look like this: Note that anytime the instructional images show a D pin, it should be replaced with another ground pin. Then, complete the wiring outlined here to connect the Arduino. Now, follow the directions here to locate the input of the display. Now, plug in the display to ensure the connections worked, as long as nothing sparks, you've successfully provided power to your display. Be sure that the bare copper of the wires don't connect to each other, some electrical tape is recommended to ensure this. Insert and fasten the wires into the female DC jack. Cut and Strip the ends of the power matrix's power cable, it should have metal circles or tabs. Once the RTC time is synced, you may move on.įirst things first, the LED matrix uses a good bit of power, so we will start by satisfying that need. Apply this difference to the Time Span() call until the times are very close to perfectly in sync. Then, go to get the exact time with seconds, compare this to the Serial monitor and find the difference, if there is any. Upload the sketch to the Arduino Uno and open the Serial monitor. This sets the rtc clock to the current date and time as of the sketch's compiling.Ī TimeSpan() attribute is added to this call which adds a number of seconds to the current time to compensate for how long it takes to compile and upload. In the setup function is a call to the rtc.adjust() method. While we are here, do the same for the RGBmatrixPanel library. Search for and install the RTClib library. Paste the code into a new sketch in the Arduino IDE, then click Sketch-> Include Library -> Manage Library. Once this is complete, copy the "Accurate RTC Clock setter" code from the repository linked under Code. Start by making the following connections: To do this we will use the Arduino Uno and RTC.įirst, insert a 3 volt coin cell battery into the RTC. To use the RTC correctly, we set its time before using it in our project. The device can be unplugged and maintain accurate time thanks to an RTC(real time clock) with an independent battery. When the event arrives, a personalized message and mixing RGB background is displayed. While displaying information, a smooth RGB color cycle is displayed through the text color. shows days and hours when days remain, but taking up the whole screen with the final seconds). The device transitions between data types automatically (Ex. The wait for birthdays, holidays, trips, and any special event can be hyped up with ease using this project. This stunning display was made as a countdown for the 2019 New Year, though it can be used to countdown to any event.
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