hai friends in this instructable i am going to show you how to make a led clock using arduino
Step 1: Things Needed
Step 2: Description
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
Step 3: TESTING WITH SEVEN SEGMENT DISPLAY ON BREADBORD
Step 4: NOW ITS TIME TO BUILD CUSTUM BUID MATRIX DISPLAY
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
Step 5: NOW LETS CREATE CLOCKS FRONT PANEL
for this we need a led frame so i created a 3d model
Step 6: Now Lets Make Led Display
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
Step 7: Now Lets Make the Case
from black acrylic sheet i created the case and for front i used a a semitransperant sheet
Step 8: Final Look and Code
Step 9: Happy Making
if you have any doubt ask