marnik.org

Custom PCB

Thursday 28 April 2005 om 23u33

PCB stands for Printed Circuit Board. To make a long story short: I made this design (scheme and PCB) for a friend of mine. He wanted a 7-segments-display to show what gear his (tuned) car is in. When I say tuned I mean “tuned”, he disassembled the total car about 4 times, it’s like 15 years old (a Golf 2 GTI I think) and most of it is custom and/or handmade. Anyway, whenever he shifts his gearbox he has these cool digits following his every move

This is what it looked like before assembly:

This is what it looked like after assembly, top and bottom:

and

And this is what the PCB’s that failed looked like. The product I’m using to make the PCB’s was too old and not powerful enough (not anymore, it had served for too long :)), so I had to change it.

This is a 7-segments-display for those of you that haven’t heard of it yet:

7 segÃ¹ents display

You can find these in tons of electrical products from televisions to clocks etc.

It is completely custom made (by me </proud>) and if you’re interested just mail me and I’ll send you the scheme (made in Eagle btw). It consist of 27 simple diodes, 7 resistors, some electric wire, a PCB and lots of solder
It was built using the “diodematrix” principle, very simple yet effective. I was going to program a PIC, but this seemed cheaper and it works on 12 volts (a PIC needs a pretty stable 5V). More info on demand.

Gepost in: Dev, General

13 Commentaren Zelf commentaar toevoegen

1. ntone | Friday 29 April 2005 om 08u39 |
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working and well?
have to check it out then!
2. jesus_ | Friday 29 April 2005 om 10u36 |
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100% functional
Gonna change the displays though, they’re red and not bright enough. I found some ultra-white, green, blue, … ^^
3. Kiwi | Friday 29 April 2005 om 15u52 |
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Sexy!
4. wap | Friday 29 April 2005 om 16u51 |
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Nice work Jesus_!

Wanna come work for us?
5. jesus_ | Friday 29 April 2005 om 16u55 |
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You can’t afford me :p
6. wap | Friday 29 April 2005 om 17u10 |
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Oh yes we can
7. jesus_ | Friday 29 April 2005 om 17u34 |
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In THAT case, I might think about it
8. wap | Friday 29 April 2005 om 18u06 |
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too late now!
9. whacker | Saturday 30 April 2005 om 13u47 |
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no you can’t :p
10. Nicodemus | Monday 2 May 2005 om 15u19 |
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Don’t forget to give your friend a bumpersticker saying “This car was tuned by Jesus”.
11. jesus_ | Monday 2 May 2005 om 16u23 |
Gepost met Firefox 1.0.3 op Windows XP

Hmm… Why didn’t I think of that?
12. Hotwaterwizard | Wednesday 17 December 2008 om 10u04 |
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http://jesus.spydro.be/weblog/2005/04/
Looking for the schematic for the circuit.
13. Marnik | Thursday 18 December 2008 om 01u06 |
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Hmm. I’ll look into it, not really sure if I still have the schematics, it has been ages.