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Tiny smd Picaxe 08M2 electric dice.

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This is a small project i made to practice making compact pcb layouts in eagle. It turned out that it`s also good practice at smd soldering.

First I found a circuit-diagram of a descrete dice and found out that this would be even easier to do with a PicAxe. When the design was finished (Eagle-files at the bottom), I was allowed to borrow a PCB-CNC at the local university to make a actual board out of it. And here are the result.

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Due to the restrictions on two attachments per post the rest of the files will be upploaded to Dropbox and shared.

Photo of the finished PCB can be found here:
Top:
https://dl.dropbox.com/u/12322474/Dice%20top.JPG
Bottom1:
https://dl.dropbox.com/u/12322474/Dice%20bottom.JPG
Bottom2:
https://dl.dropbox.com/u/12322474/Dice%20bottom%202.JPG

The board measures are 26x14mm and are duoble-sided.

To display all six combinations of a dice (very easily) you need seven LED`s and four output pins. The Input only-pin(C.3) is used to trigger the "throw". The schematic shows how it is connected.

The code:
Code:
; *******************************
; ***** 08M2 Dice           *****
; *******************************
;    Filename:Terning_08m2.bas 		
;    Date:15.03.2013 			
;    File Version:Final 	
;    Written by:Bendik Henriksen 		
;    Function:Throw a dice		
;    Last Revision:Current
;    Target PICAXE:08M2	
; ******************************* 
;	 _____________
;	|             |
;	| 1         2 |
;	| X         X |
;	|             |
;	|             |
;	| 3    7    4 |
;	| X    X    X | <-----THE DICE!
;	|             |
;	|             |
;	| 5         6 |
;	| X         X |
;	|_____________|
;

#picaxe 08M2

symbol Delay=b3
symbol Diagonal_LtR=0		;Led 1 & 6
symbol midtX2=1			;Led 3 & 4
symbol Diagonal_RtL=2		;Led 2 & 5
Symbol MidtX1=4			;Led 7
symbol bryter=pin3		;Switch to trigger throw.

Delay=500				;Delay to control animation of throw.

setfreq m8
setint %00001000,%00001000	;Set Interrupt on switch

Main:
For b1=1to 5			;Here the picaxe counts from one to six
					;several times a second while it waits for 
next b1				;an interrupt to occur. It would seem from 
goto Main				;code that it is a litle greater chance to hit
					;six but it`s not possible to detect in real life. 



Interrupt:

if b1=1 then goto en		;Here we decide at what number the counter
if b1=2 then goto _to		;was when the switch was pressed.
if b1=3 then goto tre
if b1=4 then goto fire
if b1=5 then goto fem
if b1=6 then goto seks
en:
Gosub roll				;Do cool stuff
High MidtX1				;before displaying the number
goto Hold

_to:
Gosub roll				;Do cool stuff
High MidtX2				;before displaying the number
goto Hold

tre:
Gosub roll				;Do cool stuff
High MidtX1				;before displaying the number
High Diagonal_LtR
goto Hold

fire:
Gosub roll				;Do cool stuff
High Diagonal_LtR			;before displaying the number
High Diagonal_RtL
goto Hold

fem:
Gosub roll				;Do cool stuff
High Diagonal_LtR			;before displaying the number
High Diagonal_RtL
High MidtX1
goto Hold

seks:
Gosub roll				;Do cool stuff
High Diagonal_LtR			;before displaying the number
High Diagonal_RtL
High MidtX2
goto Hold

Hold:

setint %00001000,%00001000	;Re-enable interrupt
return				;Return from interrupt

Roll:					;Some animations to make the throw interesting
Low Diagonal_LtR
Low Diagonal_RtL
Low MidtX2
Low MidtX1
High MidtX1

for b2=1to 5
High Diagonal_LtR
pause Delay
Low Diagonal_LtR
High Diagonal_RtL
pause Delay
Low Diagonal_RtL
High MidtX2
Pause Delay
low MidtX2
next b2

Low MidtX1
Low Diagonal_RtL
Low Diagonal_LtR
Low MidtX2

return				;Return to display the actual value of the throw.
Component list:
- 1 PicAxe 08M2
- 7 Red 0805 LEDs
- 1 tactile switch
- 3 150r Resistor (R3,R4,R5)
- 1 1k Resistor (R6)
- 1 10k Resistor (R2)
- 1 22k Resistor (R1)
- Some wire
- Soldering equipment
- Battery (I used a 3,7V Lipo battery)

The Video of it working can be downloaded here:
https://dl.dropbox.com/u/12322474/Terning%20demo.AVI
(i you running firefox and have vlc installed you can watch it in the browser)

The Eagle board and schematic can be downloaded from here(.zip-file):
https://dl.dropbox.com/u/12322474/Eagle_files.zip

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