The Ultimate Sports Fan Sign!

Step 4 Build the LED circuit...

1. Wire all of the negative terminals of the LED's together for each letter

2. Add a 330ohm resistor to each positive LED terminal and wire all of the positive leads together.

3. Join the positive contacts and negative contacts of each letter in the word to form a group or section that you want to flash.

4. Build the flashing circuit and hot glue it in place. Add your 9 Volt batteries, 1 or 2 to power the LED's and 1 to power the circuit. I found that one would light the sign for a long time and the LED's will run on as low as 4 volts.

Comments

[LastDevil]

could this be made to have a DC power for indoor use? sorry for the silly question i'm new to electronics

[legoskibike]

The "9v Battery Saver" will do that :p
youtube .com/watch?v=k3IWxBFNAVs&feature=player_embedded

[calaman25]

KipKay, nice work, i have a question, is this the relay that you used??. if it is, how you wired?.. thanks for asking.

[2muchfreetime8]

very nice, i just have one question: that type of relay is that?

[r0b3rt03]

There are only three things I am not sure about with this schematic. What type of relay was used and what type of component was used for the power source? Also, what is the 1004 Diode? Thanks.

[kipfan23]

power source: 9v batteries 1 for circuit 1 for LEDs

[marcia09]

I was amazed by your sign and would like to build one for my business (a challenge since I know nothing of this kind of things) Can it be powered by a transformer and if yes which one ? Also which voltage are the leds you used ? and amps? Thank you so much for an answer

[james.mcglashan]

normal leds will work i would add smart leds and have extra leds so u can easlly flick thee switches to change the text and colour

[shixman]

my name ist shady from Germany. i had tried to make this Circuit. but it doesnt work!!! kann u pleas show me the PCB Plan!!!!! i cant find the switch in this shematic . and my ciruit doesnt Flashing. THANKS

[rickyd!]

the switch is the relay (in the center)