If you want to control it from a 3.3 V MCU that can’t handle the high-side voltage on its pins, you can add a NPN transistor section as shown – this inverts the logic, making it into a more ...

Most NPN-type BJTs will work fine ... Instead of connecting the transistor base to power, we will connect it to one of the mini-D1 output pins (we chose D0). In this case, the firmware causes ...

Eight pins are standard so far for the TO-circuit ... the company reports. Fairchild uses npn transistors in DCTL configuration [for 1963’s CMOS chips by Fairchild, click here].

The development board and the circuit board with the potentiometer from the Raspberry Pi Pico Experimenting Kit from Elektor ...