Mini LED-Matrix Clock

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Mini LED-Matrix Clock

Postby Brian Griffin » Wed Jun 20, 2012 7:50 pm

Project Name: Mini LED-Matrix Clock

Project Description: Need a moderately large, bright clock, instead of the plain jane "Seven Segment"? For all the time-telling? You got it right, here's a simple one using Sure Electronics' 3208 LED Matrix module. Room thermometer included in this package! And don't worry, time is kept even if you turn it off! (Ssh, provided if you put our popular coin battery for the DS1307)

Only display 24-hours (no date), and three buttons - one for hour, one for minutes, and one to display temperature for approximately 5 seconds.

Hardware: PIC16F877A, DS1307, CR2032 battery holder, wires, DS18B20, 8MHz crystal, 32.768kHz crystal, 4.7k~10k resistors for pullups and Sure Electronics LED module DP-1311.

Software: MikroC 5.60 for PIC [within demo limit] and ports to MPLAB XC8 will be done in future.

Schematics:
schematic.jpg
Schematic


(Pullups to DS1307 data and clock lines are not shown in the schematic. And power supply connections are all +5V.)

Picture::
matrixclock.jpg
LED Matrix clock in action


Source code: Attached.

References: http://picnote.blogspot.com/2009/01/simple-clock-using-ds1307-pic16f877a.html
Attachments
matrixclock.zip
Source Code
(57.43 KiB) Downloaded 424 times
PIC - UIC00B from Cytron (replacement for my broken PICKit 2), Pickit 3, MikroC for PIC
dsPIC - MikroC for dsPIC, mikromedia board (dsPIC33)
AVR - AVR Dragon
Parallax - Prop tool
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Brian Griffin
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Re: Mini LED-Matrix Clock

Postby robosang » Wed Jun 20, 2012 10:26 pm

Hey, man! This look extremely nice! How much is the LED-Matrix cost you?
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Re: Mini LED-Matrix Clock

Postby Brian Griffin » Wed Jun 20, 2012 10:31 pm

robosang WROTE:Hey, man! This look extremely nice! How much is the LED-Matrix cost you?


RM50. I bought them from Ebay (Sure Electronics). It's a bit hard to get these stuff and I hope these are widely distributed in our place. :)
PIC - UIC00B from Cytron (replacement for my broken PICKit 2), Pickit 3, MikroC for PIC
dsPIC - MikroC for dsPIC, mikromedia board (dsPIC33)
AVR - AVR Dragon
Parallax - Prop tool
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Brian Griffin
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Joined: Mon Jan 17, 2011 9:36 am

Re: Mini LED-Matrix Clock

Postby ober » Thu Jun 21, 2012 12:27 pm

Brian, you have impressed me again. Good work!
Ober Choo
Cytron Technologies Sdn Bhd
www.cytron.com.my
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Re: Mini LED-Matrix Clock

Postby shahrul » Fri Jun 22, 2012 10:32 pm

Good, I also have Sure Electronic Dot Matrix, but not program yet. I will do a PIC Lesson later. :)
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