This design, based on a Maxim MAX220 RS-232 driver/receiver IC, allows you to increase the number of USARTs (universal synchronous, asynchronous receiver/transmitters) available on a microcontroller.
This simple device allows two computers to share a single USB printer or some other USB device, such as an external flash drive, memory card reader or scanner. A rotary switch selects the PC that you ...
Q. Is a neutral conductor allowed to be switched for 3-way or 4-way switching? A. Wiring for 3-way and 4-way switching must be done so that only the ungrounded conductors are switched [404.2(A), as ...
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