555-tacho-pcb problem

[bugmenot1]

hello all,
i have been trying to built a simple tacho for my motorcycle(single cylinder).
as i unable to find lm2917,i did some good search over net and found this circuit.
**broken link removed**

i got all the components required to build the circuit.
my problem is iam unable to create the PCB with the given details.the author already posted the layout and a file with extension .LYT
**broken link removed**
.i don't know what software to use to open it.the layout doesn't seems to be proper scale,to use as it is(when i pasted it in to MS word it looks quite big).
i use toner transfer method for the PCB's.
can u guys help me with this PCB problem.
reagrds

 

[3v0]

You did not say where you were from which makes finding parts for you difficult.
The octapart search engine has several sources for the part

National Semiconductor - LM2917N-8/NOPB
IC CONVERTER FREQ TO VOLT 8-DIP Voltage / Frequency (V/F & Sierra IC LM2917N8NOPB 1:$3.06 avail:1348
Digi-Key LM2917N-8-ND 1:$2.11 avail:997
Newark 41K4468 1:$2.11 avail:855
Allied 288-0432 1:$1.75 avail:90
Jameco 23351 1:$1.99 avail:0
Online Comp LM2917N-8/NOPB 1:$1.53 avail:0

Scale the artwork to get it to the correct size.
You may be able to scale from you printer setup/preferances.
You can do it in most photo editing or paint programs.

 

[bugmenot1]

yes i tried IRFANVIEW to scale the image.and i can able to get the correct scale (i guess).
any idea,how to open this .LYT file?imean i need it to see which components comes where(some rough silk screen).or else it wil take lot of time during population to trace each components location.

 

[jumides]

I hope this will help you

 

[bugmenot1]

thanks for your effort.i think now i can use that layout.
still my problem is not solved.if u observe closely those two layout and silk screen are not matching.
led,IC1(7805) etc placing are not same.
any idea abt the software that can open LYT file.
@jumides
thanks once again.

 

[3v0]

Do not know about LYT files. You can google as good as any of us right?

If the docs on this project are bad look for another tach project.

 

[jumides]

I open it with notepad, it show like this,

PCB LAYOUT FILE 


Àtÿ 6>ÿ@‹è `ÉÁ Ô” ü€ ü€ ð
T10RELIEF  DEFAULT
 `O ÀÀÀ
ÿÿÿ ÿÿÿ  SOLID
 `O ÀÀÀ ÀÀÀ ÀÀÀ  MARKER

ÀÀÀ
ÿÿÿ ÿÿÿ   DEFAULT
% PS ð
ÿÿÿÿ ÿ
Vector Font PART REFERENCE
% PS ð
ÀÀÀ
ÿ
Vector Font
PART VALUE
% PS ð
ÀÀÀ ÿ
Vector Font Top Copper Inner 1 Inner 2 Inner 3 Inner 4 Inner 5 Inner 6 Inner 7 Inner 8 Inner 9 Inner 10 Inner 11 Inner 12 Inner 13 Inner 14 Bottom Copper Top Silk Bottom Silk Top Resist Bottom Resist Top Mask Bottom Mask Mech 1 Mech 2 Mech 3 Mech 4 ECO Rip Keepout Board Edge Drill Occupancy ÿÿ €
€ÿ{;PS
C-40-15,CPAD,40th,40th,15th,10th,10th
C-40-25,CPAD,40th,40th,20th,10th,15th
C-50-25,CPAD,50th,50th,25th,10th,25th
C-50-30,CPAD,50th,50th,30th,10th,10th
C-60-30,CPAD,60th,60th,30th,10th,25th
C-70-30,CPAD,70th,70th,30th,10th,25th
C-80-30,CPAD,80th,80th,30th,10th,25th
C-90-40,CPAD,90th,90th,40th,10th,25th
C-90-50,CPAD,90th,90th,50th,10th,25th
C-100-45,CPAD,0.1in,0.1in,45th,15th,25th
C-100-60,CPAD,0.1in,0.1in,60th,15th,30th
C-120-60,CPAD,0.12in,0.12in,60th,15th,30th
C-150-60,CPAD,0.15in,0.15in,60th,15th,30th
S-150-65,SPAD,0.15in,0.15in,65th,15th,30th
C-200-M3,CPAD,0.25in,0.25in,3mm,20th,30th
C-250-M4,CPAD,0.25in,0.25in,4mm,20th,30th
C-300-80,CPAD,0.3in,0.3in,80th,20th,30th
C-500-60,CPAD,0.5in,0.5in,60th,20th,30th
S-40-15,SPAD,40th,40th,15th,10th,10th
S-40-25,SPAD,40th,40th,25th,10th,15th
S-50-25,SPAD,50th,50th,25th,10th,25th
S-60-25,SPAD,60th,60th,25