DIY KIT 53- Frequency counter DIY electronic kit
The description has been copied from manufacturer’s website.
This is a PIC microcontroller-based frequency meter, subtraction frequency is set with crystal measurement functions and programmable, five digital display, easy and intuitive, all using in-line components, the circuit is simple and easy to make.
Measurable frequency range: 1 Hz -50 MHz;
Most commonly used to measure the oscillation frequency of the crystal;
Five Accuracy Resolution (eg 0.0050 kHz, 4.5765 MHz, 11.059 MHz);
Automatic range switching, without artificial switching.
Modified programmable frequency settings for the measurement of radio transceivers and other equipment;
Selectable power-saving mode within 15 seconds if there is no significant change in the frequency automatically turn off the display;
You can use a common USB interface as a power supply, can also use an external power supply or 9V battery. (more…)