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**Building Custom LED Light Bars for Your Vehicle**

I recently built a custom LED light bar for my vehicle and I'm excited to share my experience with you. The project was a challenge, but it turned out to be a great learning experience.

To start, I decided to use an 80 tiny microcontroller from the company of Adafruit Industries. It's a small and cheap microcontroller that's perfect for this kind of project. The board is very simple and easy to work with.

The first step was to design the circuit. I wanted to create a custom-sized PCB to hold all the LEDs in parallel. I used bridge wires to connect all the LEDs, which are orange, white, red, green, and blue. Each color has its own wire connected to the common anode and the cathode.

The controller board is my schematic, which shows how everything works together. I chose the 80 tiny microcontroller because it's small and cheap, but also pure awesomeness. The turn signal switch up here separates the left and right orange LEDs and sends them to their respective switches. From there, they go through a few resistors and an input on one of the eighty tiny microcontrollers.

When the switch is not triggered in any direction, we have no voltage drop at this input, which means the daytime lights stay on. This is also output, which has a low voltage and lets the NPN transistor act as a switch. When the turn signal switch is closed, it puts zero volts at the daytime light switch, turning them off.

The output has a simple delay function to let those flash like the real deal. You'll also need to build the circuit for the eighty tiny microcontroller, which is really simple.

To activate the red green and blue underbody lights, I used four switches that connect to the 58 LEDs in total. The switch for the hazard lights turns both turn signals on at the same time, using two BP resistors to waste power.

Let's talk about the resistor values. We have 58 green LEDs with a voltage drop of 3.2 volts at 20 milliamps and our voltage source is a 6-volt battery. The resistance must have a voltage drop of 6 volts minus 3.2 volts, so 2.8 volts. A resistance of 2.8 volts divided by 58 x 0.02 amps gives us around 2.4 ohms.

I used a 5.6 ohm 5-watt resistor in parallel, which equals an equivalent value of about 2.8 ohms and a power rating of at least 2.8 watts.

The last step was wiring and mounting all the pots on the PCB. This was actually the easiest part, as it's just an act of looking at the schematic, connecting the wires with solder, making sure the PCB traces don't touch any metal things, and so on.

In the end, everything worked out perfectly, which is pretty rare. The smoke will stand out and be safe on the road. I hope this project inspires you to build something on your own. Don't worry if it's not as complex - simple solutions are mostly the best. Always remember that learning by doing is the best way to go.

**Additional Resources**

To get started with building your own custom LED light bar, make sure to follow these resources:

* Adafruit Industries (for microcontrollers and other components)

* Soldering and electronics tutorials

* Vehicle wiring diagrams

I hope you found this article helpful. Don't forget to follow me on Facebook, Twitter, or Google+ for more DIY projects and tutorials!

WEBVTTKind: captionsLanguage: enone problem with old mopes like Sims on are the turn signals the reason are the flasher relays which are just bi-metal switches that is pretty unreliable with the wrong load or defect bulb most of the time it just does whatever at once and consumes a lot of current while doing so because these are really old inefficient bulbs that is why I teamed up of a friend to mod the lighting system of his mote in this video I will concentrate on the turn signals the daytime lights and the brake light he also has underbody lights with RGB LEDs installed underneath his seat and tank we will include those in the circuit but it's not the main focus with that being said let's get started first of all we have to build the turn signals itself my friend made those custom sized PCBs we've stripped Cooper traces which will fit nicely inside the case later we need 2 for each turn signal one for the front and one for the back so Aiden total I sold out for orange LEDs on each front and back site also two white LEDs on each front side and RGB LED on the front and back side to keep the circuit simple and reliable I use bridge wire to connect all orange LEDs and parallel end at the same thing with the white LEDs but we need one common anode so I use bridge wire again to connect the plus terminal of the orange white and RGB LED almost done now I connected the anodes together of the front and back PCB and the cathode of each color individually in the end I got a wire for the common anode and the cathode for orange white red green and blue but the red LED of the RGB LED on the front is not connected because you only want red on the back for the daytime lights well there was a bit complicated now something simple like the brake light I just sold out.18 RGB LEDs on this custom sized PCB and I use bridge wire to connect all of those in parallel at the end I soldered wires to the common anodes and each color it is also a good idea to test the LEDs whether they still work fine in the end now the controller board here is my schematic and as you can see I chose the 80 tiny 85 again it's just such a small and cheap microcontroller it's pure awesomeness so how does this work we have a turn signal switch up here the left and right orange LEDs get separated and go to their switch then to the B few resistors and here is the input one of the eighty tiny when the switch is not triggered in any direction we have no voltage drop here that means for the eighty tiny the daytime lights stay on this is output too then it has pipe volts and let's this NPN transistor act as a switch which is closed so these LEDs light up all white LEDs and read on the back of the turn signals but if we close the turn signal switch in any direction we have voltage at this input this put zero volts at the daytime light switch which turns them off and five volt at the output zero which closes the turn signal switch and the turn signals light up here is also a simple delay function to let those flash like the real deal that was the microcontroller function of course you also have to build the circuit for the eighty tiny like I did right here but it is a really simple one I bet you can do this and don't forget to program the eighty tiny and if you are wondering well second BC 140 transistor is we place it on the PCB for the resistors just because we can only a few parts are missing the four switches to activate the red green and blue underbody lights the switch to activate the hazard lights we just turn both turn signals on at the same time and those BP resistors because we are really wasting power here with this amount of LEDs for example the green switch here turns on 32 underbody light LEDs 18 brake light LEDs and eight turn signal LEDs all green of course 58 LEDs in total here is basic example to calculate the values we have 58 green LEDs with a voltage drop of 3.2 volts at 20 milliamps and our voltage source is a 6 volt battery so our resistor must have a voltage drop of 6 volts minus 3.2 volts so 2.8 volts and a resistance of 2.8 volts divided by 58 x 0.02 amps so around 2.4 ohms and the power rating of at least 2 point 8 volts multiplied by 0.02 ms x 58 equals around 3.3 watts we use to 5 point 6 ohm 5 watt resistor parallel which equals and 2.80 10 watts resistor I also wrote the resistor and power ratings on the schematic and also how many LEDs we have in each string you can build it just like that if you want to be lazy the brake light is pretty dim when the brake is not used because of those two resistors in serious but if you use the brake this switch closes and the LEDs get brighter last step would be wiring and mounting all pots on the mote which was in retrospective the easiest part it's really just an act of looking at the schematic connecting the wires with solder looking out that the PCB traces do not touch any metal things connecting wires to the terminals trips and so on it really looked neat at the end and because we took our time and didn't rush everything worked on the first try which is pretty rare all I can say at the end is that the smoke will stand out and be safe on the road I hope this project inspired you to build something on your own it doesn't need to be this complex simple solutions are mostly the best as always thanks for watching don't forget to follow me on facebook twitter or google+ and i will see you next timeone problem with old mopes like Sims on are the turn signals the reason are the flasher relays which are just bi-metal switches that is pretty unreliable with the wrong load or defect bulb most of the time it just does whatever at once and consumes a lot of current while doing so because these are really old inefficient bulbs that is why I teamed up of a friend to mod the lighting system of his mote in this video I will concentrate on the turn signals the daytime lights and the brake light he also has underbody lights with RGB LEDs installed underneath his seat and tank we will include those in the circuit but it's not the main focus with that being said let's get started first of all we have to build the turn signals itself my friend made those custom sized PCBs we've stripped Cooper traces which will fit nicely inside the case later we need 2 for each turn signal one for the front and one for the back so Aiden total I sold out for orange LEDs on each front and back site also two white LEDs on each front side and RGB LED on the front and back side to keep the circuit simple and reliable I use bridge wire to connect all orange LEDs and parallel end at the same thing with the white LEDs but we need one common anode so I use bridge wire again to connect the plus terminal of the orange white and RGB LED almost done now I connected the anodes together of the front and back PCB and the cathode of each color individually in the end I got a wire for the common anode and the cathode for orange white red green and blue but the red LED of the RGB LED on the front is not connected because you only want red on the back for the daytime lights well there was a bit complicated now something simple like the brake light I just sold out.18 RGB LEDs on this custom sized PCB and I use bridge wire to connect all of those in parallel at the end I soldered wires to the common anodes and each color it is also a good idea to test the LEDs whether they still work fine in the end now the controller board here is my schematic and as you can see I chose the 80 tiny 85 again it's just such a small and cheap microcontroller it's pure awesomeness so how does this work we have a turn signal switch up here the left and right orange LEDs get separated and go to their switch then to the B few resistors and here is the input one of the eighty tiny when the switch is not triggered in any direction we have no voltage drop here that means for the eighty tiny the daytime lights stay on this is output too then it has pipe volts and let's this NPN transistor act as a switch which is closed so these LEDs light up all white LEDs and read on the back of the turn signals but if we close the turn signal switch in any direction we have voltage at this input this put zero volts at the daytime light switch which turns them off and five volt at the output zero which closes the turn signal switch and the turn signals light up here is also a simple delay function to let those flash like the real deal that was the microcontroller function of course you also have to build the circuit for the eighty tiny like I did right here but it is a really simple one I bet you can do this and don't forget to program the eighty tiny and if you are wondering well second BC 140 transistor is we place it on the PCB for the resistors just because we can only a few parts are missing the four switches to activate the red green and blue underbody lights the switch to activate the hazard lights we just turn both turn signals on at the same time and those BP resistors because we are really wasting power here with this amount of LEDs for example the green switch here turns on 32 underbody light LEDs 18 brake light LEDs and eight turn signal LEDs all green of course 58 LEDs in total here is basic example to calculate the values we have 58 green LEDs with a voltage drop of 3.2 volts at 20 milliamps and our voltage source is a 6 volt battery so our resistor must have a voltage drop of 6 volts minus 3.2 volts so 2.8 volts and a resistance of 2.8 volts divided by 58 x 0.02 amps so around 2.4 ohms and the power rating of at least 2 point 8 volts multiplied by 0.02 ms x 58 equals around 3.3 watts we use to 5 point 6 ohm 5 watt resistor parallel which equals and 2.80 10 watts resistor I also wrote the resistor and power ratings on the schematic and also how many LEDs we have in each string you can build it just like that if you want to be lazy the brake light is pretty dim when the brake is not used because of those two resistors in serious but if you use the brake this switch closes and the LEDs get brighter last step would be wiring and mounting all pots on the mote which was in retrospective the easiest part it's really just an act of looking at the schematic connecting the wires with solder looking out that the PCB traces do not touch any metal things connecting wires to the terminals trips and so on it really looked neat at the end and because we took our time and didn't rush everything worked on the first try which is pretty rare all I can say at the end is that the smoke will stand out and be safe on the road I hope this project inspired you to build something on your own it doesn't need to be this complex simple solutions are mostly the best as always thanks for watching don't forget to follow me on facebook twitter or google+ and i will see you next time