Digital Clock Electronics Kit
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Build Your Own Digital Clock
The Perfect Intermediate STEM Kit
Ever wanted to build your own digital clock from scratch? This hands-on electronics kit gives you everything you need to create a fully working 24-hour digital clock with a bright red display—no programming required! It’s the perfect DIY project for teens or adults who want to learn electronics while having fun.
With almost 400 soldering steps, 12 integrated circuits, and a crisp red 6-digit display, this is a serious kit that delivers both challenge and satisfaction. It provides lots of soldering fun—an ideal activity for parent-child bonding time! You’ll not only develop practical soldering and circuit-building skills, but also come away with a precise, long-lasting digital clock you built yourself. Expect questions — everyone will want to know where you got it, and you’ll feel a real sense of pride when you say, “I built it myself."
Whether you're learning at home, teaching electronics, practising soldering as part of your college education, or looking for a rewarding gift, this project makes time fly; in the best possible way. Refer to the dropdown sections below for further product information.
What's Included?
What's Included?
Includes all components required to build the 6-Digit Clock:
- 1 × PCB (Printed Circuit Board)
- 6 × 0.56" red 7-segment LED digital display blocks
- Resistors:
- 2 × 470Ω
- 50 × 1KΩ
- 3 × 2.2KΩ
- 1 × 100KΩ
- 1 × 10MΩ - 4 × 1N4148 diodes
- 3 × monolithic capacitors (103)
- 2 × 30pF porcelain capacitors
- 1 × 25V 100μF capacitor
- 1 × 32.768KHz crystal oscillator
- 1 × KF301-2P power connection block
- 2 × 5mm tactile push-button switches
- 1 × 12D07 toggle switch
- 10 × 16-pin IC sockets
- 2 × 14-pin IC sockets
- 6 × CD4511 BCD-to-7-segment ICs
- 3 × CD4518 dual BCD counter ICs
- 1 × CD4081 quad AND gate IC
- 1 × CD4060 oscillator/divider IC
- 1 × CD4013 flip-flop IC
- 4 × 3mm red LEDs
- Acrylic case panels and fittings (version with case only).
Refer to the image gallery for photographs of each component.
Learning Outcomes and Benefits
Learning Outcomes and Benefits
Understand Digital Circuits: Learn how digital logic, oscillators, and counters combine to track time.
Explore Frequency Division: Gain insights into how a high-frequency signal (32.768KHz) is divided down to a stable 1Hz pulse.
Work with Integrated Circuits (ICs): Gain hands-on experience placing and soldering ICs like CD4511, CD4518, and others.
Practice Soldering: Almost 400 connections provide ideal training for anyone looking to master soldering.
Discover Oscillation & Timing: Learn how crystals and capacitors work together to create a reliable clock signal.
Master Troubleshooting: Diagnose circuit issues and build confidence in debugging and repairs.
Boost STEM Confidence: Build a real product while learning about electronics, logic gates, signal processing, and more.
This kit is perfect for learners looking to level up from basic kits to more advanced, real-world builds.
Frequently Asked Questions (FAQ)
Frequently Asked Questions (FAQ)
Q: Do I need any programming skills to build this clock?
A: Nope! This is a pure hardware-based kit—no coding knowledge is required.
Q: Is it suitable for complete beginners?
A: Yes, anyone can build this kit by following our illustrated instruction manual. Teens with some prior soldering experience will be able to complete this project entirely on their own. Young children or those who have never soldered before will require some help from a grown-up, making this kit a great activity for quality parent-child bonding time!
Q: Does the instruction manual include a circuit diagram and explanation of how it works?
A: Yes, our instruction manuals are tailored not only to provide details on how to assemble the kit, but also contain a huge amount of educational content that will help you understand how it works too!
Q: How accurate is the timekeeping?
A: This digital clock kit is highly accurate thanks to the use of a 32.768 KHz crystal oscillator, the same type found in most wristwatches. It generates a very stable signal that’s divided down electronically to tick precisely once per second. This setup ensures consistent timekeeping without the need for internet or manual syncing.
In normal conditions (room temperature and stable voltage), you can expect a drift of only about ±1 to 2 seconds per day—so over a full week, that’s typically less than 15 seconds of time gain or loss. For a DIY electronics build, that’s exceptional performance! Keep in mind that extreme temperatures or unstable power can affect timing slightly, but for most home use, this clock will keep very reliable time.
Q: What advantage does the version with the case have?
A: The version with the case provides both protection and polish. It shields the delicate circuit board and components from dust, moisture, accidental knocks, or static discharge—extending the lifespan of your clock. It also gives the finished build a professional, display-worthy appearance, making it more suitable as a gift or for use on a desk, bedside table, or workshop.
The clear acrylic casing allows you to still see your handiwork, showing off the internal components and soldering while keeping everything safe. It also prevents small parts like switches or jumpers from being accidentally nudged once set. If you plan to use your clock regularly, display it, or gift it, the version with the case is definitely worth it.
Product Specifications
Product Specifications
Dimensions (approx., when completed):
Version with case:
- Length: 14.1 cm
- Width: 9.0 cm
- Depth: 2.1 cm
Version without case:
- Length: 12.9 cm
- Width: 7.8 cm
- Depth: 1.2 cm
PCB Type: All through-hole components.
Case material: clear acrylic with steel and nylon fixtures.
Power Supply: 4.5 to 5.5 V DC which can be supplied via the power connection block using a USB cable, 3xAA battery pack, etc.
Clock format: 24 hour format (hh:mm:ss)
Accuracy: typically to within 2 seconds per day (less than one minute drift per month).
Assembly and Usage Info
Assembly and Usage Info
Anyone can build this Digital Clock Electronics kit following our detailed step-by-step instruction manual which can be downloaded from the link below. The password to open the manual was sent to the same email that you placed your order from. Can't find it? Just Contact Us!
Download: 6-Digit Digital Clock Kit Instruction Manual
Skill Level: Intermediate
Age Rating: 12+ (adult supervision recommended for younger builders)
Assembly Time: Typically 3-6 hours
Tools and Materials Required
Tools and Materials Required
Tools required for this kit
- Soldering iron
- Solder wire
We sell these items as a bundle for just €25.95 (or currency equivalent) which saves 10 percent! Just click the link below to select your countries plug type and add to your order.
SOLDERING IRON & WIRE BUNDLE
Of course, you only need to buy the tools once; you'll use them again and again for your future electronics projects!
Links and References
Links and References
Our blogs & videos related to electronics kits:
Ultimate Guide to Electronics Kits
Youtube video: Tools, tips and tricks for soldering electronics kits
Other useful links:
How 7-segment LED display blocks work
How binary coded decimal (BCD) signals drive digital displays
Shipping and Warranty Info
Shipping and Warranty Info
Shipping Information
Orders are processed and dispatched within 1–2 business days. Typical delivery times for this product, depending on region are:
- EU: 7-14 days
- UK: 5-12 days
- US / Canada: 6-11 days
- Australia: 7-14 days
All orders are shipped with tracking, where available. Please refer to our Shipping Policy page for further detail.
Warranty & Satisfaction Guarantee
All electronics kits come with a 14-day satisfaction guarantee. If you're not happy with your purchase, contact us and we’ll arrange a refund or replacement — no hassle. Please note that to qualify for a replacement or refund, kits must be in their original, unused condition. Please refer to our Returns and Refunds policy for more information.
Packaging
We aim to minimize waste while protecting your order. All electronic kits are securely packaged in padded mailing bags containing anti-static ESD bags and/or rigid plastic boxes (depending on the product) to ensure the safety of the electronic components. An example of electronics kit packaging can be viewed HERE. If you're purchasing this item as a gift and would rather that it was in a box, we also sell quality gift boxes at the following link: Quality Gift boxes.
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Ships from: International Warehouse
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Haven't received it yet.
Thank you for your order and please accept our apologies for the delay with receiving it. However, as you can see from the message from USPS we just emailed onto you, this is completely outside of our control. Over the last 3-4 weeks there has been a huge increase in US-inbound shipments as businesses try to get inventory through customs and into the US before the de minimis rule is removed on 02 May 2025. This has led to a significant delays as carriers try to handle the massive increase in goods entering the country. However, you'll be happy to know that your parcel is now in your locality as of today—please refer to your tracking link which was emailed onto you. Since it is now in your home town, you can expect delivery pretty soon, possibly even later today, but certainly within the next 1-2 days.
Completed this project yesterday and I'm very pleased that I purchased it. Lots of fun soldering and component manipulation to provide a good sense of accomplishment. Recommend being very careful with installation of the 8 segment LED units so that they are flush with the PCB because if they aren't and you try to unsolder and then resolder them, you may run into big troubles. Big electrolytic capacitor in the lower left corner should probably be installed laying flat rather than upright. Note to Science hut - an IC socket or two arrived with a pin missing or highly damaged so I had to buy some replacements - no big deal. I bought a USB-C power cable to hook to the terminal strip and then will provide power via an iPhone type charger. Note that for whatever reason, I was not successful in getting +5V DC using a USB-C (to USB-C) iPhone type charger; rather I ended up having to use a USB-A type iPhone charger and attaching a USB-A to USB-C cable to it. Not a big deal. Another note to Science Hut: consider making the terminal strip a USB-C receptacle and that would solve a lot of problems for builders. I recommend getting the acrylic case.
I think I will purchase the FM radio next for additional fun!
Hi Mark,
Thank you so much for taking the time to leave this review—we really appreciate it! We're especially grateful for your advice and tips, as they’ll be helpful for others building this kit. Your suggestions for improvements are also invaluable, and we’ll certainly take them on board.
Sorry to hear that some sockets were damaged, but we're glad you found a workaround to complete your kit. Just so you know, we do offer replacements for damaged components as outlined in our Returns & Refunds Policy. Feel free to email us at info@thesciencehut.com or reach out via Facebook—we’re happy to help, whether it’s for technical support, product issues, or general inquiries.
Thanks again!
I enjoyed building this one, it's a step up from the more simple clocks and is a good challenge for next steps if you've built some simpler kits before. You'll get a little of everything, from standard components to IC sockets to placing ICs. I used a USB-pigtail cord to power it, these can be easily found online. Building this will not only test your skills, but your ability to finesse the detail (like careful alignment of some components like the switch and power connector). I like to learn something from any project I do, and this was worth the experience. All in all, a really fun kit with a great result (I'd recommend getting the acrylic case - fits perfectly and makes it look really nice!) Mine keeps perfect time!
Hi Dave, thank you for taking time out of your day to leave this review—we really appreciate it. Delighted to hear you enjoyed building this kit and got learning benefits from doing so, and that you're happy with the finished product. Our technical team received your email feedback relating to the need for the capacitor to be laid flat to facilitate assembly of the acrylic case—they have since revised the instruction manual based on your feedback to include that detail, so thank you for highlighting to us—we're always grateful to receive feedback that helps us to improve our products or services.
Fun project to build. Took a little over four hours. Bent one pin on a 16 pin IC socket and it broke off. Luckily have multiple spare 16 pin sockets. Replacement socket is much stronger.
Hi David, thank you very much for taking the time to leave a review, we really appreciate it! Glad you enjoyed the project and happy to hear you had a spare component when one of the pins on the IC socket broke off. If ever a component breaks that you don't have a spare for, we can supply them—just drop us an email at info@thesciencehut.com.
Great kit
Hi Frank, thank you very much for taking the time to rate the digital clock electronics kit, we really appreciate it. We're glad that you're happy with it!