Clock with Tics (presentation prototype) using Arduino




Clock with Tics is an Arduino-powered 24-hour digital clock that displays expletives at random intervals.

A clock ‘ticks’. A ‘tic’ (note the different spelling) can be a mental disorder and can manifest itself in a number of ways; most seriously, someone suffering from “Tourette’s Syndrome” will blurt out swearwords involuntarily. I had thought of titling this piece “Time for Tourettes”, but the clock itself is tasteless enough.

digital clock




This artifact is part of my series “The Technology of Good Intentions” which focuses on ‘failure’ in design. In this case, who has not had an electrical widget that has ‘gone on the fritz’ and suffers from momentary lapses?

The Arduino code for this project is available under a Creative Commons Attribution-Noncommerical-Share Alike 2.5 Canada License. Most of the electronic parts were obtained from futurelec.com and seeedstudio.com. The circuitry is split between two boards: the ATMEGA168 controller using the Arduino bootloader and clock chip/battery is separate from the four-digit display. Power is provided by a 9 volt 650 mA power supply. The 7805 voltage regulator runs quite hot and because of this it is mounted separately with an aluminum heat sink.

Schematic digital clock

The clock is a DS1307 with a small battery backup to hold the correct time when the rest of the unit is without power. Each 5×7 LED display matrix is driven by a MAX7219 chip. The schematic for the entire clock is below.

 

For more detail: Clock with Tics (presentation prototype) using Arduino

We recommend EasyEDA for electronic circuit design.
From Schematic Drawing to PCB Production, Just Need One Tool
Cheap PCB Prototype: 10 pcs 2 layers only $10, quick delivery, 100% E-test







This Post / Project can also be found using search terms:

  • led clock circuit diagram update
  • led projects clocks circuit
  • moving led display project pdf
  • prototype rgb control circuits
Clip to Evernote

Leave a Comment

(Spamcheck Enabled)

Read previous post:
lcd screen for Arduino
Cheap lcd screen for the Arduino

We have used the pda with a desktop computer (robot) and with the Nslu2. Here we are going to use...

Close
Scroll to top