Laser based projects acclimated to be expensive, until the development of solid accompaniment lasers. This activity is advised for the access akin laser experimenter. The ambit allows any two computers with consecutive (RS-232) advice adequacy to acquaint over 200 meters application a laser beam. A low amount transmitter alone ambit is additionally presented actuality for [...]

Low-cost RS-232C multiplexer serves as multiport adapter
Multiport RS-232C PC add-on boards are advised for accelerated multichannel communication. Therefore, anniversary consecutive anchorage has its own manual controller. If your appliance doesn’t charge interrupt-driven service, and polling the accessories through RS-232C channels one afterwards addition is sufficient, again you can use a distinct ambassador with switched ascribe [...]

Another method that helps program development besides a dot LED as the output device is a serial bit. With a serial transmission to a terminal emulator program, developer may then test program running easier than a dot LED. One of my circuit uses PIC16F84 having one bit for sending ascii character with “printf” function. The [...]