It also can control 5V and 12V fans automatically with no user input, and can run from any USB power source, so it’s not necessary to find a USB-PD-compatible source just to run a small fan.

His solution uses two EMC2305 five-fan controller chip which communicates over I2C on a custom PCB with a RP2040 at the center. This allows the hardware to communicate with USB to the host ...

What you need is a fan that is powered through USB. But you don't have to work in an office to get the benefits. These portable USB fans are handy for anywhere you want some cool air, especially ...