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  • October-18 2020 13:09:00

    Easy to build and works. That is the most important. /There are lesser problems: 1. It does not work with some crystals. (Maybe I made a mistake.) 2. The sensitivity of the frequency tester is low (higher than 1V). A pre-amplifier is very much missing from it.)

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  • October-07 2020 02:34:20

    looks cool

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  • July-12 2020 05:58:56

    good

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  • June-15 2020 11:31:00

    Reçu dans les temps. Emballage correct. A tester une fois monté.

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  • September-17 2020 10:50:26

    Le kit est arrivé avec le bouton poussoir inutilisable à cause de pattes tordues et cassées. Banggood a accepté de rembourser. Avec un bouton de remplacement, j'ai réussi à monter le kit, mais il est très peu sensible à cause de son entrée de mesure à basse impédance directement sur une borne du microcontrôleur. Pour pouvoir l'utiliser comme un fréquencemètre à peu près digne de ce nom, je vais devoir lui adjoindre un préamplificateur à impédance d'entrée élevée à transistor

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  • July-23 2017 12:24:34

    It is unexpectedly accurate for the price. However, my kit had the wrong size IC socket. It was a 16 pin socket instead of an 18 pin. Fortunately I have a huge supply of parts so I created a socket out of a machined header strip. I couldn't see making an issue out of a 30 cent part. Plus the instructions are barely adequate. You basically have depend on the silkscreen for part placement. To build it I used a fine soldering tip and AlphaMetals .015" no clean solder. I also recommend wearing an anti-static

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  • July-03 2017 14:26:41

    I am very surprised with this tester/counter. Good quality parts (all parts are marked!) metal film resistors, low drop low power voltage regulator (good for battery). Very good PCB with solder stop mask and high quality shining tinning. Rounded edges of the PCB made of FR4. And the first time on a kit from china with a montage description in paper form! The housing is perfectly suitable too. Does it work as tester for crystals? YES! Does it work as frequency counter? YES! Would I buy this again?

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  • January-22 2019 15:38:19

    Finally, my parcel arrived today. Everything is as described. I started working and in 4 hours it was ready. It works perfectly. The face test is with a quartz crystal of 20Mhz. I recommend. [En] In sfarsit, astazi mi-a ajuns coletul. Totul este conform descrierii.M-am apucat de lucru si in 4 ore a fost gata. Functioneaza perfect. Testul de fata este cu un cristal de quatz de 20Mhz. Recomand.[Ro]

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  • April-05 2018 19:07:47

    Хороший наборчик для самостоятельной сборки. Очень хорошо, что в комплекте идет корпус.

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  • August-13 2016 08:42:34

    OK, I got the zero message on the screen, therefore it seems that it is working. Can you please explain the Screen messages i get when I push the button? Like Psage, Add, Sub, Zero, Table. What do I suppose to do with them?

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