COB LEDs are built as a matrix of LEDs, that is, a concentration of LEDs in a silicone coated tablet.
The advantages of LED COB:
- A luminous performance of up to 120 lumens / watt (twice as much as LED SMD)
- The light intensity is greater without needing to concentrate so much the beam of light
- Greater durability
- Angle of opening up to 160ºC
- Multidirectional light
Mount LED diode on a good heatsink, add some fan, this is necessary because you have to "remove" the heat from the surface of the plate so that the LEDs last longer to place a little bit of thermal silicone in each of the placement centers the diodes.
The thermal paste increases the thermal transfer between the diode and the metal plate used as a circuit.

NRF24L01 Shield Atmega48 Wireless Module SPI To IIC I2C TWI Interface features:
- Operating voltage: 5V
- Wait time of the module receives the data: more than 2S
- The waiting time of the module sends data: more than 300
- Transfer speed: 50 Byte / S (theoretical value)
- I2C / TWI address: 0 x 47 (decimal 35)
- Address NRF24L01: 0 x 34, 0 x 43, 0 x 10, 0 x 10, 0 x 01 (from lowest to highest)
- Size: 44 x 23 mm

Cleaning of AG Printer Spray 400ml features:
- An agent for cleaning printing mechanisms in printers (mechanisms feeding paper, printing head drive components etc.), cleans print heads in needle printers, it does not react with plastics used in printers

Microfiber Cleaning Cloth features:
- Microfiber cleaning cloth is perfect for cleaning laptops, screens, keyboards, computer casings, printers, copying machines, scaners, phones, telefaxing machines as well as other such devices. Cleans firmly without leaving stains and smudges