blinkie – how you do that

Blinkie – How you do thatMusecon 2014

1

Blinkie – How you do that

Dwayne: [email protected]

Dale: [email protected]


2

New This Year!

• 4 New Kits– Star (mono, bi-color or RGB)– 8x8 RGB Matrix– 5 RBG (updated design of 4RGB)

• CR2032 battery, thicker trace, pads for 10mm LEDs, 1 more LED.

– 8x16 (updated design)• CR2032 battery, removed IR communications,

added USB interface.


3

Software – Pic ASM

• Using on 12F and 16F chips• Main program

– 7000 lines

• Patterns– 3800 lines

• Covers lots different blinkies!

Covers all the Blinkies except

•5x7 Badge

•4x4 Square

•4x4x4 Cube

•8x8 RGB Matrix

•New 8x16 Matrix


4

Software – 18F line• Used by 4x4 Square, 4x4x4 Cube, 8x8 Matrix and 8x16

matrix• Used “WFF” by Simon Inns for base

– http://www.waitingforfriday.com/index.php/Building_a_PIC18F_USB_device

• MicroChips C18 compiler and USB library• LED driver interrupt is written in assembly. Dwayne’s

assembly is over 100 times more efficient.• Microsoft C# for PC side, using Visual C3 2010 Express.

Simon’s code is a

great start For simple

USB I/O projects

http://www.waitingforfriday.com/index.php/Building_a_PIC18F_USB_device

http://www.waitingforfriday.com/index.php/Building_a_PIC18F_USB_device


5

Where is the source code?

www.2dkits.com

• “Build the kit” Instructions

• Source code

• Complier Listing

• Hex file

• Microchip Data Sheets

• Schematic


6

Pic Chip 8 pins

12F683 12F1822 16F18313

Program Memory 2,048 3,584 3,584

Ram 128x8 128x8 256x8

EEProm 256 256 256

I/O 6 6 6

CPU speed 8MHz 32MHz 32MHz

Cost Q100 $1.12 $0.91 $0.69


7

Pic Chip 14 pins

16F688 16F1824 16F18324 16F1454

Program Memory

4,096x13 7,168x13 7,168x13 8,192x13

Ram 256x8 256x8 512x8 1,024x8

EEProm 256 256 256 0

I/O 12 12 12 11

CPU speed 8MHz 32MHz 32MHz 48MHz

USB

Cost Q100 $1.32 $1.08 $0.86 $1.04


8

Pic Chip 28 pins

16F886 16F1936 16F1938 18F2550 18F25K50

Program Mem 8,192 14,336 16,384 32,768 32,768

Ram 368x8 512x8 1,024x8 2048x8 2048x8

EEProm 256 256 256 256 256

I/O 24 25 25 23 25

CPU speed 8MHz 32MHz 32MHz 48MHz 48MHz

USB USB

Cost $1.94 $1.68 $1.76 $4.20 $2.21


9

Have you looked at xxxx

Texas Instruments MSP430?

• They offer a start kit for $10

• Higher level CPU then PICs, easier to program, better support for “C”.

• Operate at 1.8-3.6 volts, hard to driver Blue LEDs.

• They have 14 and 20 pin DIP versions. Pic has 8, 14, 18, 20, 28, 40, 64


10

Have you looked at xxxx

PIC 32 bit line?

• Looks like a great chip!

• Saw some cheap pre-made boards using it. (Solution looking for a problem)

• See 8 have been release in SPDIP package.

• Not pin compatible with 18F line.


11

http://www.microchip.com

Under:Products-> PICmicro Microcontrollers

• Chip/CPU info data sheets

• MPLAB IDE– Compiler– Simulator/Debugger– Editor

• MPLAB X– Xc compiler

http://www.microchip.com/


12


13

Pic Programmer

• PicKit3 from Microchip $45

• $10 to $20 – Zif socket from ebay

Not hard to find 20% off

Coupons for microchip

development tools


14

Circuit Board Layout• Eagle Cad http://www.cadsoft.de/

Layout / Schematic / Autorouter

Non-Profit 4 x 3.2 inches 2 layers $0

Freeminum 4 x 3.2 inches 4 layers $0 60-day timed version

Light Edition 4 x 3.2 inches 2 layers $69

Hobbyist 6.4 x 4 inches 4 layers $169

Standard 6.4 x 4 inches 4 layers $820

Professional 64 x 64 inches 255 layers $1640

http://www.cadsoft.de/

Circuit Board Layout

• Avoid “Express PCB” and “Pad2Pad”. They are using proprietary formats that other board makers can not work with.

• You want something that generates Gerber RS-274X and NC Drill files.

• Open source is getting better– PCB– FreePCB– KiCAD


15

Avoid the “Free” circuit board

layout software “ro

ach hotel”.

Your data can checkin but

never checkout.

AutoRouting Software

• Eaglecad– Quick (minutes)– Lots of options, diagonal options

• www.FreeRouting.net– Java Based– Sledge Hammer, multi-pass, hours….

Using FreeRoute to optimize the via’s out.


16


17

6 Bi-LED (& Badge)


18

3x3 matrix


19

4 RBG


20

19 LED Stick


21

5x7 matrix


22

8x16 matrix To read get pdffrom website!

New 8x16 matrix


23

To read get pdffrom website!

8 bit

SPI bus

4x4x4 Cube (4x4 Square)

8x8 matrix


24

PIC

LED Driver

8 bit 8 bit

Sou

rce

Driv

er

8 bit

8 bit

8x24 LED array

US

B

PC

LED Driver LED Driver


25

8x8 RGB matrix

To read get pdffrom website!

4x4x4 uses samedriver design

Board in Eagle cad


26


27

Sample Board Cost 4in x 4in

OSH Park• $2.50 sq inch• multiples of 3

Seeed Studio (5 boards)• ~2 in x 2 in $10• ~2 in x 4 in $24• ~4 in x 4 in $21• ~4 in x 6 in $56•~ 6 in x 6 in $80

Seeed uses CM 5cm = 1.97in


28

Board Cost – Hockey stick


29

Board Cost – Zoom in


30

Sample 8pin socket cost

Goldmine 1 $0.2010 $0.15

100 $0.11

Circuit Specialists 1 $0.1010 $0.08

100 $0.051000 $0.04

Digikey 1 $0.1310 $0.10

100 $0.08500 $0.07

1000 $0.075000 $0.06


31

Part Cost – Hockey stick

$0.00

$0.05

$0.10

$0.15

$0.20

$0.25

0 100 200 300 400 500 600 700 800 900 1000 1100

Series1

Series2

Series3


32

Price problem

• Shopping around can save.

• Buying bulk can save up.

• Surplus is great, but might not get it again.– Never see the same part– Never see the same price

• Shipping overhead has to be factored

• Ebay

• AliExpress


33

Purple UV leds


34

Color Freqwavelength

interval700–635 nm 635–590 nm 590–560 nm 560–490 nm 490–450 nm450–400 nm

Ultraviolet Along waveblack light UVA 400–315 nm Near NUV 400–300 nmUltraviolet Bmedium wave UVB 315–280 nm Middle MUV 300–200 nmUltraviolet Cshort wavegermicidal UVC 280–100 nm Far FUV 200–122 nm Vacuum VUV 200–100 nm

Extreme EUV 121-10 nm Low LUV 100–88 nmSuper SUV 150-10 nm

yellowgreenblueviolet

color

redorange

190 nm can be called: Ultraviolet C, short wave, Germicidal, Far, Vacuum

Hey look at allthe tla’s for UV!


35

Is UV dangerous? (Short)

• Your Iris does not adjust for UV light. Dark room with bright UV bad.

• UV damages DNA.


36

Is UV dangerous? (Long)• High intensities of UVB light are hazardous to the

eyes, and exposure can cause welder's flash (photokeratitis or arc eye) and may lead to cataracts, pterygium, and pinguecula formation.

• UVA, UVB, and UVC can all damage collagen fibers and, therefore, accelerate aging of the skin. Both UVA and UVB destroy vitamin A in skin, which may cause further damage. UVA can contribute to skin cancer via indirect DNA damage (free radicals and reactive oxygen species). It penetrates deeply but it does not cause sunburn.


37

Common Purple/UV freq

• 400~405

• 395~405

• 390~395

• 395~400

wavelength interval

700–635 nm 635–590 nm 590–560 nm 560–490 nm 490–450 nm450–400 nm

Ultraviolet Along waveblack light UVA 400–315 nmUltraviolet Bmedium wave UVB 315–280 nmUltraviolet Cshort wavegermicidal UVC 280–100 nm


color

redorange

Freq some LED specs

Show UV LEDs

Operating at


38

Problems with LED specs


39

Bad Specs... Example #1

This wave length is Red/Orange

Package of 500PCS 5mm Purple/UV 3000 mcd LEDsSpecifications:• Material: InGaN • Emitting Colour: purple/violet• Lens Type: water clear • Reverse Voltage: 5.0 V [ 1/4W,470ohm resistor is needed ]• DC Forward Voltage: Typical: 1.9 V Max: 2.3 V• Wave Length: 625-635nm • Luminous Intensity MCD: Typ: 3,000 mcd • DC Forward Current: 20mA• Viewing Angle: 12±5degree• Lead Soldering Temp: 260oC for 5 seconds• Intensely Bright

Ah, what?

Resistor normally to

Limit CD forward current

InGaN norm is2.8 – 4.0 volt


40

Bad Specs... Example #2a


41

Bad Specs... Example #2bwavelength

interval700–635 nm 635–590 nm 590–560 nm 560–490 nm 490–450 nm450–400 nm


color

redorange

Reds a littleOrange

Purple isGreen to Blue


42

blinkie – how you do that

Documents

pic chip

pic programmerpickit3

software pic asmusing

f lineused

great chip

simons code

start kit

8x16 matrixused wff