How to Make Led Pixel Arduino Desktop Clock

hai friends in this instructable i am going to show you how to make a led clock using arduino

1.64*leds

2.12*1N4148 diodes

3.3*470 ohm resistors

4.ds1307 rtc module

5.common pcb

6.atmega 328atmega 328

8.16MHz crystal.

9. two 22pF caps.

10. 28 pin IC socket for the ATMega328.
11.10 k resistors

12.acrylic sheet

13. 3*switches

The circuit uses the ATmega328p micro controller (the same as the Arduino uno board) and the DS1307 clock IC. You can easily set/change the time by pressing the setup buttons. It can be powered on with USB cable from your computer circuit diagram

fritzing image

first we need leds.

you can use any kind of leds. i prefer milky ones.

how to turn ordinary leds to milky leds....??

if u have ordinary leds no problem....

using a sandpapper we can easily turn normal led to milky ones juzt rub sandpaper on glass side of each leds

for this we need a led frame so i created a 3d model

you can download stl file from here

arrange 3 leds as row and 5 leds for column follow the picture

black dot represent the corresponing leds of 7 segment displayconnect all anodes together(common anode)

all didodes are 1n4148
CONNECT LED 1,2,3 TOGETHER.

CONNECT LED A AND 1 WITH 2 DIODES THEN CONNECT TO DIGITAL PIN 2 . LED B AND 3 CONNECT TO DP 3. LED C AND 4 CONNECT DIRECTLY AND THEN CONNECT DP 4 WITH 470 OHM RESISTOR . LED D CONNECT DP 5 WITH 470 OHM RESISTOR. LED 5 AND E CONNECT TO DP 12. LED F AND 6 CONNECT TO DP 7 . LED G AND 5 CONECT TO DP 8. COMMON ANODE CONNECT TO DP PIN 6 .

so this is the first digit of our clock for 2,3,4 digit connect each and every led corresponds to no. and letter follow the circuit diagram

to save some space we use standalone arduino circuit

from black acrylic sheet i created the case and for front i used a a semitransperant sheet

code

if you have any doubt ask

thanks

https://edisonsciencecorner.blogspot.com/