Connect NodeMCU or D1 Mini pins D1, D2, and D3 to the gate (1st) legs of the three IRF540 or TIP120 transistors using 1K resistors. Connect theSourcelegs to the ground. Connect the Drain legs to the Red, Green, and Blue connectors on the LED strip. You can use the 12V power s...
The setting up of the 5V output is precisely done using the P2 preset and the D2 zener diode. Power bank Resistor Calculations The resistors R1 and R2 decide how much current can be achieved across the emitter side of the transistors. These output currents determine how fast the internal bat...
The circuit requires a 5 volt well regulated power supply section for operating the circuit and should be included without fail as the IC strictly requires a 5 volt supply for operating correctly. The displays are powered by individual transistors which make sure that the displays are lit brightly...