I created this table lamp with a height of 40cm and specific design and consisting of 8-13 pieces, so it can be printed on 3D printers.Lamp can be fitted: 3-5 base legs  1-3 rhum / hat / arrestThe body is drifting on the cable.One lamp hat fits 4x5mmLed.

When installing rooted LED diodes, an example for calculating the resistorExample:Battery voltage is 12 V and we have the following data from the catalog:  LED voltage = 2 V athe maximum possible current flowing through the diode is 20 mA. First Specify the resistors size.UR = Uz-UdSecondly, by ohm the law, we calculate the resistance of the resistor.For U, put the already calculated voltage on the resistor (10 V) and afterWe mount a current that can flow through the diode (20 mA = 0.02 A).  Watch the current in mA! If we get 20, it's nonsense.