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Crystal Oscillator Frequency Counter Tester Meter, DIY 1Hz-50MHz Frequency Indicator Crystal Oscillator Tester Module Kit with 5 Digits Digital Tube Display Red

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$12.49

$ 6 .99 $6.99

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About this item

  • This is a frequency meter based on microcontroller, with crystal vibration measurement function and programmable frequency settings.
  • With five-digit digital tube display, the measurement data display is intuitive and convenient.
  • All of them use direct-plug components. The circuit is simple, easy to make, easy to install and debug.
  • The measuring frequency range of this DIY frequency meter is 1Hz-50MHz, which can measure the oscillation frequency of most commonly used crystal oscillators.
  • Five-bit resolution (e.g. 0.0050kHz, 4.5765MHz, 11.059MHz) supports automatic range conversion.


Feature:
1. This is a frequency meter based on microcontroller, with crystal vibration measurement function and programmable frequency settings.
2. With five-digit digital tube display, the measurement data display is intuitive and convenient.
3. All of them use direct-plug components. The circuit is simple, easy to make, easy to install and debug.
4. The measuring frequency range of this DIY frequency meter is 1Hz-50MHz, which can measure the oscillation frequency of most commonly used crystal oscillators.
5. Five-bit resolution (e.g. 0.0050kHz, 4.5765MHz, 11.059MHz) supports automatic range conversion.
6. Programmable add and subtract frequency settings for measuring equipment such as radio transceivers.
7. The power-saving mode can be selected, and the display can be automatically turned off if the frequency does not change significantly within 15 seconds.
8. Universal USB 5V interface can be used for power supply, or external DC power supply or 9V battery can be used.

Specification:
Condition: Brand New
Item Type: Frequency Meter Module
Material: Plastic
Color: Red
Frequency Measurement Range: 1Hz-50MHz
PCB Size: Approx. 80x53mm / 3.1x2.1in

Package List:
1 x Bag of Frequency Meter Module Parts DIY Kit


Gregg
Reviewed in the United States on January 23, 2025
Easy build kit, useful tool
spldart
Reviewed in the United States on May 22, 2024
Went together in about 1 hour for me. For an expert it's as easy as a fidget spinner in assembly.For an intermediate it would still not be a problem to assemble. For a beginner you may want supervision.I have an optocouple circuit with wave shaper to read speed of rotation. IE motors. This should go nicely with my project to give RPM readout for any motor, shaft,etc I want.Price point is great. Shipping was quick. I'm a happy customer.Second picture is my pickup and wave shape conditioner for the this counter.Addendum: I have finished my first attempt at reading a motor speed (rpm) I had issues with all the noise from brushes and switching supplies in the environment. By adding a mylar cap, 102 to 562 -.001 to .0056uf, I was able to squash the hf noise and get a solid read on motor speed. Do what you will with that bit of info 8~D
Cocinemos en Familia
Reviewed in the United States on October 26, 2024
Pro: Board clearly labeled for each element position. Soldering is straight forward. Look at picture to identify correct LED display orientation.Con:A static bag for packing with all items in the bag. IC, socket, and crystal with no leg protection came with several pins bent.Missing 10kOhm resistor. Additional 22p capacitor. I guess part count was correct, but actual parts were not complete.No instructions. The board has all the elements clearly labeled so soldering is straight forward.It wont turn on. Tested all connections with meter and voltage at different points. IC is getting voltage. Fired up my PICkit3 and was able to read the PIC so at least the IC is functional.If I get it to worK, I will revise my review.
Moggie
Reviewed in the United States on April 27, 2024
Won't count above 12,ooo
A-Ron
Reviewed in the United States on June 13, 2023
Lack of instructions is highly annoying, but if you've put things like this together before, it's pretty obvious where each component goes. I found that I had to have an extremely stable and clean power supply or the results were all over the place. My bench power supply didn't work unless I put a 10µF capacitor across the +/- pin holes at the bottom of the board. USB from a wall wart worked well, though, and I suspect battery power would be consistent enough.I didn't need to remove the 102 cap as suggested in another review, but I did end up putting a 10pF cap in parallel with the 22pF cap at the top of the three caps above the 3 pin crystal test point and was able to get reliable results for as low as 2Mhz Crystals. it was still inconsistent with 1Mhz, however.All in all, a useful tool for a quick sanity check but not as wide a range as claimed.
Laura E. Wilkinson
Reviewed in the United States on December 17, 2023
It would have been nice to have a manual.
systemguy
Reviewed in the United States on January 2, 2021
This board has two different frequency inputs One is a built-in oscillator that uses a bare crystal that is plugged into the two outer sockets in the three-pin sockets to provide a signal to the PIC microprocessor. The other is an external input from either a powered crystal oscillator module or an external variable oscillator. Unfortunately, with the 1 nF (102) capacitor in place, both outputs are wired together at the input pin to the PIC microprocessor. This has the potential to cause loading of the input signal with erratic results. Based on another customer review of this board sold by another vendor, I replaced the 1 nF (102) capacitor with a switch that removes the built-in crystal oscillator from the PIC input when the external input is in use. The results were very favorable. As soon as the board was powered up with a 4 MHz crystal, it read out 4.0004 MHz. With a 10 MHz crystal, it read 10.000 MHz, and with a 20 MHz crystal it read 20.000. When I switched the internal oscillator out of the input and plugged in a digital variable oscillator that I had, it correctly read frequencies from about 2 KHz to 115 KHz.I only spent about 2 hours soldering the parts in place and double checking. However, I have been an electronics hobbyist for over 50 years. Also, I spent a couple of days looking at all of the information on the circuit, which is available in several forms from 8 vendors on Amazon. This kit is not for a beginning hobbyist because of the lack of instructions and the need to understand and read transistor, diode, and capacitor markings. The location of the sockets for crystals and the input pins for external oscillators are not marked on the board. I found out where to put them from another vendor by looking at an assembled board picture of the board with a crystal plugged in on their website. There is also a schematic of an older board (THAT HAS A FEW DIFFERENCES) and a discussion on how to set the modes on http://img.banggood.com/file/products/20160817023551SKU360318.pdf . This circuit has a jumper to select either the internal or external oscillators.This project requires care and soldering skills to properly solder the plated-through-holes on the well-made board. Very nice project and well worth the money -- it just needs better documentation.UPDATE: I found that about half of my stock of 4 MHz crystals would not enter stable oscillation, and half would. I added a 10 pF capacitor in parallel with the 22 pF capacitor farthest from the crystal socket and all of the 4 MHz crystals worked properly, as did the 10 the 20 MHz crystals. I didn't try using the 102 (1000 pF) capacitor in series with the output as it is in the schematic. Maybe that solves the problem too.
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