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Microcontroller-based Ta chometer - erabhishekvashisth - 08-16-2017 Microcontroller-based Ta chometer [attachment=16580] Testing The source code of this article is available at com/efycodes/efy-codes.zip at code file tacho.hex. Using a programmer, load the code into the new chip AT89C2051. (Refer the May 2005 issue of EFY for article on programmer for 89C51 and 2051.) Then, fit it into the circuit board and after powering up the circuit, test it. Software The software is written in Assembly language and assembled using 8051 cross-assembler. It is well commented and easy to understand. It uses AT89C2051 s internal timer for measuring the period of one cycle of the rotation in units of 100 microseconds. Thus if the speed is 1500 rpm, it is 25 rps, and the time taken for one cycle is 40 ms. |