How to make LED turn signal repeaters in rear view mirrors
Flashing in time with the turn signals LEDs, composed in the shape of an arrow in the rear view mirror of a car or motorcycle, look very impressive. It’s not difficult to make such repeaters for yourself.
If desired, you can make the desired LED assembly yourself by placing the elements on a piece of textolite of the appropriate shape.
We must not forget about current-limiting resistances, without them LEDs will quickly fail.
It is not advisable to take diodes more powerful than 1-2 W. They heat up during operation and, despite the fact that we will turn them on for a short time, they require installation on heat-sinking plates.
Scheme option for LEDs with a voltage drop of 2-2.1 V is shown below.
Since the size of the electronic part of the device is quite critical, it is best to lay out the circuit in any tracer program and install it on a printed circuit board.
We will use a ready-made LED assembly from Aliexpress. This will significantly reduce the time for assembling repeaters. The price of a pair of such arrows is about 100 rubles - .
Lightly heat the mirror body with a hairdryer and use a wooden or plastic spatula to remove the canvas.
Let's outline the LED assembly with a marker on the back of the mirror.
Using a solvent (gasoline or acetone) remove the protective layer. Apply the solvent in small portions on a cotton swab to create a clean area with smooth edges.
We secure the LED assembly with thick electrical tape with the emitters facing inward.
Let's drill a small hole in the corner of the mirror housing so that the wire from the turn signal repeater can be routed through it.
We insert the mirror sheet back into the body, after heating it with a hairdryer.
We will lay the wire of the LED assembly along the rear view mirror mounting rod, securing it along the entire length with a heat-shrinkable tube of the appropriate diameter.
It is better to choose a plain tube without extraneous inscriptions. This way the structure will look whiter and aesthetically pleasing.
Let's install the mirror on the bike by threading the wires inside through the existing holes.
Let's connect LEDs parallel to the turn signal, observing the polarity. The most convenient way to do this is on the connector chip.
Ready! Now, at night, when the turn signals are on, a colored arrow will blink on the rearview mirror. Looks very impressive.
LED arrow for repeaters
If desired, you can make the desired LED assembly yourself by placing the elements on a piece of textolite of the appropriate shape.
We must not forget about current-limiting resistances, without them LEDs will quickly fail.
It is not advisable to take diodes more powerful than 1-2 W. They heat up during operation and, despite the fact that we will turn them on for a short time, they require installation on heat-sinking plates.
Scheme option for LEDs with a voltage drop of 2-2.1 V is shown below.
Since the size of the electronic part of the device is quite critical, it is best to lay out the circuit in any tracer program and install it on a printed circuit board.
We will use a ready-made LED assembly from Aliexpress. This will significantly reduce the time for assembling repeaters. The price of a pair of such arrows is about 100 rubles - .
Device assembly algorithm
Lightly heat the mirror body with a hairdryer and use a wooden or plastic spatula to remove the canvas.
Let's outline the LED assembly with a marker on the back of the mirror.
Using a solvent (gasoline or acetone) remove the protective layer. Apply the solvent in small portions on a cotton swab to create a clean area with smooth edges.
We secure the LED assembly with thick electrical tape with the emitters facing inward.
Let's drill a small hole in the corner of the mirror housing so that the wire from the turn signal repeater can be routed through it.
We insert the mirror sheet back into the body, after heating it with a hairdryer.
We will lay the wire of the LED assembly along the rear view mirror mounting rod, securing it along the entire length with a heat-shrinkable tube of the appropriate diameter.
It is better to choose a plain tube without extraneous inscriptions. This way the structure will look whiter and aesthetically pleasing.
Let's install the mirror on the bike by threading the wires inside through the existing holes.
Let's connect LEDs parallel to the turn signal, observing the polarity. The most convenient way to do this is on the connector chip.
Ready! Now, at night, when the turn signals are on, a colored arrow will blink on the rearview mirror. Looks very impressive.
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