Theoretically, creating LED lamps with your own hands is not difficult, you only need a power supply with the appropriate output voltage and the LEDs themselves. In practice, everything is somewhat more complicated.
Making DIY LED lamps for spotlighting a workplace or for table lighting is quite simple. Assembling LED street lighting lamps on your own, that is, general, is already a more serious task. Street lighting should provide a minimum of 1,000 lumens of light output, which would be equivalent to lighting a 100-watt incandescent light bulb. At the same time, 200 lumens of light output level is sufficient for a table lamp.
To create an outdoor lamp, you should choose LEDs of later designs, which are easy to install, although not as efficient as modern ones. Installation of LEDs should be carried out according to a pre-drawn scheme, which can be geometrically similar to a star or a square. This will solve the problem of thermalcooling the LEDs by evenly placing them on the board. Do not increase the supply current to increase their luminous flux. It is necessary to adhere to the operating mode indicated in the reference data for each specific type of such lamps.
LEDs of the MX-6 and XP-E types are designed for direct current in the range of 300-350 mA, therefore, their connection diagram must be calculated based on these indicators. When designing LED lamps with your own hands, you need to adhere to the established voltage and current indicators in order to get outdoor LED lamps with high reliability and safety. To increase the heat dissipation area of a street lighting LED lamp, an additional radiator is installed on the assembled LED board module, which allows using several such modules operating in an economical mode in one illuminator housing.
Now for the power supply. For a conventional LED table lamp, you can use an adapter in which the output voltage is regulated by a diode, and the output current is set by a resistor. Such a power supply is not suitable for a more serious lighting device, since during operation the diode heats up and changes its characteristics, which can lead to failure of the entire lamp.
DIY LED lamps are good because they allow you to calculate the power consumption and use as many LEDs onas long as there is a corresponding adapter with output current stabilization. For example, for a 3-LED module, a 5-watt adapter such as LC3536-08 is sufficient.
For point illumination of the desktop, lenses can be built into the LED light source, which will focus the light flux to a given point, for example, such as LL01CR-DF60L-M2.
As you can see, you can "sculpt" light structures from LEDs and successfully use them for lighting in the house and on the street.
