{"product_id":"6-digits-diy-clock-kit-auto-display-time-diy-alarm-clock-soldering-practice-kit-for-students-and-diyers","title":"6 Digits DIY Clock Kit Auto Display Time DIY Alarm Clock Soldering Practice Kit for Students and Diyers","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eApplication\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eElectric Toy\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eZiqqucu\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCondition\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNew\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDissipation Power\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e0.01-0.05W\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e-20℃ - +70℃\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePackage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eTQFP\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eQuantity\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e1\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSupply Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eStandard\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eVoltage Regulator\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003esemi_Choice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_dynamic\"\u003e\u003ckse:widget data-widget-type=\"customText\" id=\"1005000019036421\" type=\"relation\"\u003e\u003c\/kse:widget\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cp\u003eParameters:\u003cbr\u003e1. This is a 24-hour digital circuit clock kit that uses chips such as CD4518, CD4511, CD4081, CD4013, and CD4060\u003cbr\u003e2. The product is made of high-quality materials with guaranteed quality\u003cbr\u003e3. Can be used for teaching, training, and welding, very suitable for DIY enthusiasts\u003cbr\u003e4. Stable product performance and long service life\u003cbr\u003e5. Using a red display digital tube, the numbers are clear and clear at a glance\u003c\/p\u003e\n\u003cp\u003eProduct Introduction:\u003cbr\u003eThis product is a 24-hour digital circuit clock, using chips such as CD4518, CD4511, CD4081, CD4013, CD4060, etc. The circuit does not contain a microcontroller, so there is no program, and the hours, minutes, and seconds can be calibrated without an alarm function.\u003cbr\u003eThis kit mainly consists of a second signal generator, a counter, decoding display, and a timing circuit. The second pulse is accurately divided by a high-frequency signal generator to obtain a 1HZ square wave signal, which is more accurate in timing.\u003cbr\u003eThe second signal generator consists of CD4060 and CD4013, generating a square wave signal with a frequency of 1HZ. CD4060 is a 14 stage binary frequency divider\/oscillator. It forms a 32768HZ oscillator with external resistors R44, R43, C1, C2, and Y1. After 14 levels of binary frequency division, a square wave signal with a frequency of 2HZ is obtained at pin 3. CD4013 contains two independent D flip-flops, one of which is configured as a binary counter through wiring. The second signal can be obtained by binary counting the input 2HZ square wave signal. CD4518 is a double decimal addition counter. Use three CD4518 clocks to time the hour, minute, and second, with the hour configured as 24 base and the minute and second configured as 60 base. The counting result of CD4518 is output in BCD code form from pins Q0-Q3 to the BCD decoder CD4511. CD4511 converts the BCD code into a display segment code that illuminates the corresponding digital tube, forming recognizable Arabic numerals on the digital tube, and visually displaying the current timing result.\u003c\/p\u003e\n\u003cp\u003eThe minute and second bits are 60 base counts, and the second signal is introduced to the EN end of CD4518 through switch S1, Add 1 to the falling edge of the signal every second If the second signal is connected to the CLK end of CD4518, 1 is added to the rising edge of each second signal. When the counter counts to 9, Q0-Q3 outputs 1001, which means Q3 is 1. As it is a decimal counter, when the next second signal arrives, the counter changes from 9 to 0, and Q0-Q3 outputs 0000, forming a falling edge signal on Q3. This signal is introduced to the ten bit counter of the second counter. After every 10 full counts, the ten bit counter adds 1 When the ten digit count value reaches 6, Q0-Q3 outputs 0110, meaning that Q1 and Q2 are both 1. Q1 and Q2 output 1 through an AND gate and connect it to the reset end of the counter, causing the counter to advance from 6 to 0, completing a cycle of 60 decimal counting. The reset signal is also used as the counting signal of the minute counter, adding 1 to the minute counter every 60 seconds. The minute counter is also in 60 base. When the minute counter reaches 60, the ten bits of the minute counter also receive a reset signal from one AND gate, causing the time counter value to increase by 1. When the counter reaches 24, the ten bits of Q0-Q3 are 0010 and the one bit of Q0-Q3 is 0100. By performing an algorithm to sum the ten bits of Q1 and the one bit of Q2, it is connected to the reset terminals of the two counters, Set the hour bit count to zero after reaching 24, achieving a 24 base count.\u003c\/p\u003e\n\u003cp\u003eDIY bulk Package:\u003cbr\u003ePCB board X1\u003cbr\u003e0.56 digital tube 1 bit common cathode X6\u003cbr\u003e470 Ohm resistor X2\u003cbr\u003e1K resistor X50\u003cbr\u003e2.2K resistor X3\u003cbr\u003e100K resistor X1\u003cbr\u003e10M resistor X1\u003cbr\u003e1N4148 diode X4\u003cbr\u003e103 single stone capacitor X3\u003cbr\u003e32.768KHZ crystal oscillator X1\u003cbr\u003e30P porcelain chip capacitor X2\u003cbr\u003e25V 100UF capacitor X1\u003cbr\u003eKF301-2PX1\u003cbr\u003e6 * 6 * 5 button X1\u003cbr\u003e12D07 toggle switch X1\u003cbr\u003e16P IC holder X10\u003cbr\u003e14P IC holder X 2\u003cbr\u003eCD4511X6\u003cbr\u003eCD4518X3\u003cbr\u003eCD4081X1\u003cbr\u003eCD4060X1\u003cbr\u003eCD4013X1\u003c\/p\u003e\n\u003cp\u003ePackage include:\u003cbr\u003eLoose parts X1\u003cbr\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/S817f931d7ba2440297a9f9f51094ee2bT.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/S26e0a515174f47098514e2f1c791839fC.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/Se69cc50fcdc043d29b6bff24e51eca7di.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/S52b58312b83f4a3e91aecac3d787e221k.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/S3f6aec8ef1db405e9423117cbfb86b5ar.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/S5fbf14f9d64b403aaff8385d7c33ee55D.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/S5a0e89a3b7fd41f88a3bc5ab331ae3bck.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"wscnph\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sc352c86905ac42878e421130b78b0054l.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cbr\u003e","brand":"BuckUp Tactical","offers":[{"title":"Default Title","offer_id":52578997764383,"sku":"\u003cnone\u003e","price":11.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0018\/2983\/0703\/files\/Sf4beecc02ae042febcb786a971ea05598.webp?v=1779894834","url":"https:\/\/www.buckuptactical.com\/products\/6-digits-diy-clock-kit-auto-display-time-diy-alarm-clock-soldering-practice-kit-for-students-and-diyers","provider":"BuckUp Tactical","version":"1.0","type":"link"}