7400 Series Clock Kit

Name: 7400 Series Clock Kit
SKU: 22902
Price: 50.00 USD
Availability: Discontinued
Rating: 4.88 (2 reviews)

(2 Reviews)

This project is 7400 series logic ICs based clock. It keeps time solely based on discrete logic ICs and a stable clock source.

Designed by Electronics Corner in United States of America

Product Retired

This product is no longer available for sale.

The seller may be offering an improved version or it may be hanging out on the beach, enjoying the retired life.

While you're here, check out these other awesome products for sale!

More "clock" Related Products

Super GameBoy Clock Mod

qwertymodo

$15.00

Crazy Clock

Geppetto Electronics

$22.50

Sale

ESP8266 Led Matrix Clock DIY Kit

Sonocotta

$15.00 $20.00

2MB/32KB MBC3 RTC Flash Cart for Game Boy (Color)

Timville

$42.00

2021-03-30T02:14:52.736Z-IMG_20210306_162215(1).jpg

2021-03-31T01:14:29.580Z-20210330_210019.jpg

2021-03-30T02_11_01.542Z-20210329_220923.jpg

2021-03-30T02_11_01.542Z-20210329_220931.jpg

This project is 7400 series logic ICs based clock. It keeps time solely based on discrete logic ICs and a stable clock source.

Features 12 Hour Time Format Modular 1Hz clock source Hour and Minute Time Set All through hole components What is it? This is a clock based off the 7400 Series logic family of ICs. It keeps time i…

Features

12 Hour Time Format
Modular 1Hz clock source
Hour and Minute Time Set
All through hole components

What is it?

This is a clock based off the 7400 Series logic family of ICs. It keeps time in a 12 hour format using an external 1 Hz source. The 1 Hz source comes from a 4 pin header, and allows to be changed out in the future.

Why did you make it?

I wanted a clock for my home office that stood out and thought why not make one that doesn't need a microcontroller or an FPGA? From that thought came this project. Originally I was not planning on making a kit, but as I was designing it and doing the layout, I realized it could be a great kit to learn soldering. The kit uses all through hole components to keep the soldering at a beginner level.

What makes it special?

I think it's a pretty simple design. It uses a total of 13 discrete logic ICs from the 7400 Series logic family. Time is kept via a 1 Hz source that plugs into a 4 pin header. This allows for future upgrades to improve the overall time keeping accuracy. It displays the time in a 12 hour format. The hours, minutes, and seconds are displayed. There are two config buttons that allow setting the hours or minutes.

The whole board is powered using 5V that can be provided from the DC barrel jack. I also separated out the voltage that powers the display. Right now, a jumper is provided to allow 5V to go the display. However, if you are up to the challenge, you can add your own dimmer circuit to adjust the brightness of the voltage.

Full Instructions to Assembly here

Review Breakdown

Average Ratings

Product: (5.00)

Documentation: (4.50)

Shipping: (5.00)

Communication: (5.00)

William | May 26, 2021

Very high quality and quick shipping

I am using the clock now - everything works as advertised. I bought the assembled unit and the build quality is very high. I am experimenting with using the 1 PPS output of a GPS module I purchased separately to provide the count input for the clock - so far so good, but the short pulse width of the GPS module (it is about a 10% duty cycle pulse every second instead of the 50% duty cycle output of the 1 PPS board that comes with the clock) has an effect on the way the time setting circuit works, but of course that is because I am using a non-standard module. So I plugged in the provided 1 PPS board, set the time, and then switched back to the GPS board. I'm going to power the clock from a UPS source so I will rarely need to reset the time.

Recommended!

Whitney | April 20, 2021

Shipped Fast, Great Packaging, High Quality!

I received my order very quick after ordering and I was blown away by the attention to detail with things such as part numbers on the silk screen to make putting everything together such a breeze!

Electronics Corner

Waltham, MA, United States of America

2 Reviews | 10 Orders

View Store

We thought you'd like these too…

6-Digit Nixie Tube Clock Mainboard with Remote

YIHANG

$48.88

Pixel Clock

Matt's Lab

$30.00

Mini Oscilloscope Clock 6Lo1i Cathode Ray Tube CRT

Oscilloscope clocks

$250.00

Mini Oscilloscope Clock B7S-1 Cathode Ray Tube 3"

Oscilloscope clocks

$225.00

Tindie

7400 Series Clock Kit

Product Retired

While you're here, check out these other awesome products for sale!

More "clock" Related Products

Super GameBoy Clock Mod

Crazy Clock

ESP8266 Led Matrix Clock DIY Kit

2MB/32KB MBC3 RTC Flash Cart for Game Boy (Color)

This project is 7400 series logic ICs based clock. It keeps time solely based on discrete logic ICs and a stable clock source.

Features

What is it?

Why did you make it?

What makes it special?

Review Breakdown

Average Ratings

Very high quality and quick shipping

Shipped Fast, Great Packaging, High Quality!

Electronics Corner

We thought you'd like these too…

6-Digit Nixie Tube Clock Mainboard with Remote

Pixel Clock

Mini Oscilloscope Clock 6Lo1i Cathode Ray Tube CRT

Mini Oscilloscope Clock B7S-1 Cathode Ray Tube 3"