How to make an RGB LED Wall Clock DIY STEM Projects

Table of Content

• Step 4: The Schematics
• How to Make a Digital Clock
• Step 4: Time to Add the Brain
• Circuit Diagram
• Step 5: Advancing the Wall Clock
• watt (15000 mw) DUOS DIY
• How to make a LED DIY clock

Toast the chopped pecansin the oven at 325F for 5-10 minutes, keep a close eye they will go fast. It is important for the pecans to be cool so the butter does not melt which would change the texture of the cookie and it won’t bake properly. STEP ONE- Toast the chopped pecans in the oven at 325F for 5-10 minutes, keep a close eye they will go fast. Adding a little rye flour just heightens the earthy flavor. But you can easily swap it out for wheat or all-purpose flour.

Provide the ability to set the hours section of the counter. Wire the output from pin 8 of the fourth 7490 to the normally closed contact of a single pole double throw switch. Wire the normally open contact of the switch to the 1 Hz time base. Wire the wiper of the switch to the clock input of the fifth 7490. Provide the ability to set the minutes section of the counter.

Step 4: The Schematics

The program is a bit messy but I did as best as I could to make it clean. Now you will need to choose the right resistor for current limiting to 3 LEDs in parallel. I made a common cathode display which means the all the negatives leads are connected together. But as I said In the parts list you will need 130 LEDs and the other 4 LEDs are going to be used as dots that separate the hours, minutes and the seconds. 4) about 10 resistors for the current protection.

As we will need the LEDs to represent second and minutes, we will use the RGB LED strip of 60 LEDs for the same. Do not have to reset the clock every time it is turned off. 5volts is just for the lights, and the CR2032 handles the real-time clock.

How to Make a Digital Clock

Consult the manufacturer's data sheet for the 7805 to get the required pin-to-pin wire connections for this circuit. Plug the components into the breadboard to physically support them. Add completely cooled toasted pecans, rye flour and all purpose flour. The dough will be coarse and crumbly but will stick when you press together. Press roughly a tablespoon of dough in your hand squeezing and rolling into a 1 inch ball shape. Place about an inch apart on cookie sheets.

Wire the output from pin 8 of the second 7490 to the normally closed contact of a single pole double throw switch. Wire the wiper of the switch to the clock input of the third 7490. I used a 5volt 2 amp plug pack to power the lights, and the Arduino as well. Wiring from the rightmost device to the leftmost device, wire the first s as a count by 10, a count by 6, a count by 10, and a count by 6. Wire the fifth 7490 as a count by 2 and the sixth 7490 as a count by 1 for the 12-hour clock.

Step 4: Time to Add the Brain

Once done, take the connections out as we need to attach the strip to the clock. Also, we need to differentiate between all the three hands. Therefore, we need the LED to turn “white” for each second. And the position of the minute hand will be the place where the LED is “green”.

So a simple calculation gives that there are 21 LEDs in each seven segment display. Now, fix these plates to evive through the base plate using M3 bolts of length 25mm length. Initialise RGB strip () with () LED pixels on pin () block.

A big thanks must go to a Youtuber called Cine-lights. They make many interesting items using programmable LED’s, a clock being one of them. They make all the instructions and coding required available to anyone who wants it. The LEDs are available in rings, having various quantities of LEDs already attached to the printed circuit boards. There is one with 60 lights, perfect for a clock. It comes in 4 sections and is easy to solder together.

The data sheet will show how to wire connect the 7805 and supporting discrete components. Take your chip and put it in the arduino board and put the program I have added with this step. As the name suggests us we will be using RGB LEDs instead of seconds, minutes, and hours hands.

I made my clock with a stand alone arduino without the original board because I wanted to make a finished project. This block is used to display Humidity and Temperature along with the symbols. The value of both temperature and humidity will be obtained from the DHT11 sensor. Also, we will display the time and data on the display. Take the two hanger plates , these plates will hold evive to the clock and also will be used to hang the clock to the wall.

Wire the fifth 7490 as a count by 4 and the sixth 7490 as a count by 2 for the 24-hour clock. Many suppliers are available on the Internet or through electronics supply catalogs. Choose a vendor that offers basic integrated circuits of the generic 74xx and 40xx families, and discrete components, such as resistors and capacitors. So join me and build your own custom LED digital clock powered by our favorite little micro-controller the Arduino. Connect pin 6 or pin 7 of the fifth 7490 as the clocking input of the sixth 7490.

Digital clocks can be used to tell time at a glance. They became quickly more popular than the older sweep hand clocks, now known as analog clocks. The time derived by analog clocks came from either a pendulum or a spring.