Controlling a block of field effect transistors on one wire, is this possible?

Question

Arduino

Hello.
Comprehended the issue of controlling a small handful of field-effect transistors (15 pieces). After all, it is not advisable to give one pin of the arduino for each transistor. Based on this, the question came up: how to control these transistors using, say, i2c or OneWire? Is it real?
Thanks for the answer)

Answer 1

If only outputs are needed (transistor, relay, LED control), then the cheapest way is to use a shift register (first googled article: robocraft.ru/blog/arduino/519.html ). Management - SPI.
If later you need a full-fledged port that can work both for input and output, then here is an article ( we.easyelectronics.ru/part/i2c-rasshiritel-portov-... ) about the i2c port expander.
There was something similar for 1wire, but I could not find it right away.