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DAOKAI AT89C2051 6 Digital Clock Kit LED Electronic Clock DIY Kit 9V-12V LED Digital Tube Display with USB Male 2 Cores for Vocational School Electronics Enthusiasts

Description:

About this item:

  • Module parameters: Working current: 35mA, Standby current: 1.2mA , Supply voltage: D5--12V, Recommended voltage: DC9V, Board size: 90x70mm/3.54x2.75in, Digital tube: 0.36 inch, red light.
  • Kit details: This kit is already a very mature kit. It can be installed directly according to the drawings. The program is also tested in the single-chip microcomputer. It can be used when plugged in. The installation kit requires a certain electronic foundation.
  • Note: If the display of the nixie tube is abnormal, please disconnect the power supply, remove the backup battery, and then re-install it, it will return to normal after power-on.
  • Application: This kit is suitable for course practice, science and technology competitions, and DIY creation. It not only improves your welding skills, but also allows you to gain something from every experiment. At the same time, the kit is highly practical and can be used after installation.
  • Package includes: You will get 1 x AT89C2051 6 Digital DIY LED Electronic Clock(Kit does not include battery), 1 x USB Male 2 Cores

    • Parameters:
    Board size: 90x70mm/3.54x2.75in
    Working current: 35mA (external power supply, self-provided)
    Standby current: 1.2mA (spare battery power supply, battery self-supplied)
    Supply voltage: D5--12V
    Recommended voltage: DC9V

    Illustrate:
    1. 89C2051 digital clock kit, the control chip adopts AT89C2051, the digital tube adopts 3 two-digit red common anode type LED digital tubes, the display is clear and bright, because it is a scanning display method, so each digital tube abcdefg each pin uses a bus In parallel, changing the resistance value of R4-R10 can change the display brightness.
    2. The S1 button is used to calibrate the time, press and hold it for more than 2 seconds to enter the calibration time state and exit, and quickly touch it to adjust the time value.
    3. This circuit adds a 3V backup battery, AT89C2051 uses the backup battery to supply power when the power is off, the clock will not stop, but the digital tube does not display, the backup battery is useless after a call, AT89C2051 uses an external power supply, and the digital tube displays normally. So you can add a power switch, turn off the power when you go out, turn it on again when you come back, and display it normally, so as to achieve the purpose of saving electricity.
    4. Accurate travel time.

    Package includes:
    1 x AT89C2051 6 Digital DIY LED Electronic Clock
    1 x USB Male 2 Cores

    Review:

    3.8 out of 5

    75.00% of customers are satisfied

    5.0 out of 5 stars A fun build

    M.E. · 18 March 2024

    A fun build

    3.0 out of 5 stars Not a bad kit

    P.W. · 5 August 2024

    Ok - first off - Im a qualifed enough to know what Im doing....I needed a simple clock for a proj. and decided this was the lazy way out.1> Arrived quickly - all components - BOM & Schematic on a4 page.2> Pads on PCB lift very easily - so be very careful when soldering... 2 lifted on me (very rare) - I have a proper soldering station This caused unit not to function correctly (7805 was one pads and uP reset was the other.) Eventually got unit to work - but - pin 11 on uP is blitzed so display is missing 1 bar on all LEDSo - would I buy again - probably - if your careful and watch out for lifting pads you will be ok.

    4.0 out of 5 stars A well designed kit ... with a few issues

    N. · 27 September 2023

    First the good news:1. It works!2. The board is decent enough quality with a clear silkscreen (clearer than the printed copy!), nice sized pads and a good solder mask. Soldering was straightforward (I used 60/40 solder @ 350 C)3. It's good value and one of the few 'through hole' kits available at this price point if you don't fancy SMD soldering!Now a few niggles which cost it a star from me:1. The instructions are badly translated to English. e.g. "When welding, please do not have a few solder joints"2. The USB power cable is next to useless - unless you remove/ignore the 78L05 regulator. USB supplies 5V (which is the output of the regulator) but the regulator requires a minimum 6V input to provide a 5V output. There's no mention of this in the instructions. So either bypass the regulator OR use an alternative higher power supply. The board does not work from USB power with the regulator in place.3. The baldy translated instructions mention jumpers ('This kit has a total of three jumpers, the installation of the first jumper installed' - huh?) and the component list (BOM) also lists these, however my kit did NOT come supplied with any jumper components, and none were pre-installed on the board Also, unlike all the other components the jumper locations on the board are not designated in the silkscreen. This led me to (incorrectly) believe they were optional, or changed the behaviour in some way. Actually they are required or else some LED segments and the separator LEDs will not light. Took me a while to figure that one out. Even worse, one of the jumpers underlaps one of the LED segment displays - which I'd already soldered - so I had to desolder that to get to it. The waste clipped legs from the resistors make adequate jumper substitutes, but why is it like this? Why aren't they just connected by tracks on the PCB?? Additional soldering practice?4. One of the three 'twin 7-seg LED' components was supplied with badly flattened/mangled legs. I had to straighten them carefully. Probably don't expect great quality on kits at this price, but still, if I'd damaged it trying to straighten them it would have been a return.None of these are major issues, just something to be aware of. it's still a great kit for some through hole soldering practice, or as a first electronics project.

    3.0 out of 5 stars DIY

    T. · 7 September 2023

    Easy to learn soldering

    5.0 out of 5 stars Works great.

    N.J. · 11 May 2023

    Instructions a little poor but adds to the challenge of assembly.Works great on 9v and 12v, but not well on 5v via the provided USB lead.Tip: Take out and bypass the voltage regulator to work on 5v.

    4.0 out of 5 stars Works okay

    A. · 11 December 2022

    5.0 out of 5 stars Good quality! Fast delivery! But it doesn’t include 2032 battery.

    Y.K. · 7 March 2023

    Everything fine! But need buy battery 2032.

    Preis - Leistung. Genaue Beschreibung.

    A.K. · 23 January 2024

    War eine Erfahrung beim zusammenlöten. Super gelungen nach der guten Beschreibung. Funktioniert super.

    SH-E 879 six-digital clock

    P. · 14 October 2023

    Molto divertente da realizzare, è proprio quello che cercavo per integrarlo ad un mio progetto. Le istruzioni riportano anche lo schema elettrico completo, utile per chi avesse bisogno di fare modifiche è utile.I 4 led di divisione dei display, a mio parere, fanno troppa luce, ho quindi cambiato il valore di R2 da 470 Ohm a 820 Ohm così da rendere la loro luminosità più in tono coi display.L’alimentazione dev’essere minimo da 6V, quindi con l’USB (5V) in dotazione non può funzionare, a meno che non si elimini il regolatore di tensione 78L05 e si baipassi (vedere foto allegata).

    入力電圧に注意が必要

    a. · 5 April 2024

    Usb給電だと３端子レギュレータを介しているため電圧不足に陥りコロンが点灯しませんでした。３端子レギュレータをスルーさせるか、５v以上の電圧をかける必要があります。私は12v給電にしていますがコロンが明るく点灯するので5v給電でも良いかもと感じました。抵抗値を替えて自分好みの明るさにするのも良いかも。

    Nada

    F. · 26 February 2024

    Non funziona

    Ersatzteilspender

    A.K. · 22 April 2023

    Alles zusammen gebaut, ist ja sehr einfach, 9 volt Block angeschlossen und kurz zugeschaut wie der erste Transistor abgeraucht ist...

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    DAOKAI AT89C2051 6 Digital Clock Kit LED Electronic Clock DIY Kit 9V-12V LED Digital Tube Display with USB Male 2 Cores for Vocational School Electronics Enthusiasts

    3.6

    BHD5660

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    Product origin: United Kingdom

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