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Digital Tachometer Circuit

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9 Threads found on edaboard.com: Digital Tachometer Circuit
I want to build a circuit that will pick-up induction from a pulse generated by an engine sparkplug and create a nice digital signal from it.. Any help will be apreciated !
Here's a tachometer project with MikroC source code: SH1_Tacho How to make a contact-less digital tachometer using IR-light reflection technique. Part 1.
i need circuit digital tchometer range 30000 rpm (2051+4 digit 7seg. led)
Hi, I've done a digital tachometer using a PIC16F877 and an Hall effect sensor wich "sense" a small magnet attached to the engine shaft but I need to make it more "universal". This tacho. is gonna be used with small gasoline engines wich don't have primary ignition coil signal available. What I'd like to use is to wrap a piece of insulated wire
I want to build a circuit that will pick-up induction from a pulse generated by an engine sparkplug and create a nice digital signal from it... The trick is to wrap a wire about 10 turns around the sparkplug wire. The problem is that I don't know how to filter this noisy signal. The maximum spark duration will be 0.5 ms. So I need a c
Inject a digital PROBE into your circuit for input and set the frequency of the probe to a frequency comparable to your speed. Does this help?
Use a digital Probe in your simulation and adjust the frequency of the probe comparable to your engine speed. Good luck.
Nowadays, with microcontrollers and LCDs having become very economical and popular, it is possible to build a compact and low-cost LCD based counter. Here is an example of many can be found on the internet: Home Made 99000 RPM digital contact-less tachometer
hi.....i m doing the contactless digital techometer, i had completed the ir based ckt and it's work quite amazing.now i have to display it in 16 by 2 lcd. needs micro c code for pic 16f877a???????????????pls help actully i m doing dc motor control with high range so i have to use pic 16f877a.68778 ir circuit