50 MHz range frequency counter using ATtiny45 microcontroller

Posted on Feb 4, 2014

A wide range frequency meter is an useful tool for an electronics lab. This projects describes a frequency meter based on AT90S231 microcontroller that can measure input frequencies up to 50 MHz. The measured frequency is displayed on 6 digit multiplexed seven segment displays. It uses two external high-speed 8-bit counters (74HC590) in cascade to

50 MHz range frequency counter using ATtiny45 microcontroller
Click here to download the full size of the above Circuit.

count the incoming pulses. Depending upon the input frequency, the counting interval for the external counter circuit is changed by the microcontroller for getting better accuracy. The firmware for AT90S231 is provided in C.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Circuit transmits ARINC 429 data
    Digital Storage Oscilloscope Adapter
    FM Transmitter (2N2222)
    60 watt 2n3055 power amplifier
    ds18b20 using 1 wire
    transistors Mystery circuit: latching relay control with transitor / capacitor why doesnt it work
    Amp Compensation
    wireless microphone circuit
    FM Audio Transmitter Circuit
    Selfrunning Free Energy 5 KW Kapanadze 8
    Photosensitive resistor circuit diagram of an automatic lighting