build eeprom programmer

[blueangel666]

Hello guys !
After my failure with the pictures of the scenic, I wanted to try with the construction of a programmer EEPROM 93c46

I found a diagram on the internet, on a German website, where practically the programmer uses the parallel port, and, strange thing, it has no resistance or diode or capacitor between the port pin and the pin of the EEPROM. It might work ?

[LL205gti]

don't stop on the first schema found. even just typing on the ****** images "93c46" come out of the box and anything else that is devoid of electronic elements....

[blueangel666]

Yes, I torvati other. Including the ludipipo, JDM or other resistors and capacitors.

I asked if it can? work. If anyone has tried it

[mec241974]

since there are components you can make the connections and check for yourself if it works, definitely use circuits with resistors and capacitors should be more stable in the planning stage.

[biondo83]

Yes, I torvati other. Including the ludipipo, JDM or other resistors and capacitors.

I asked if it can? work. If anyone has tried it

Yes, these are valid, and you can also plan other families of serial eeprom with the same programmer as well as? the PIC.
Do not save on components (diodes, resistors and capacitors).

[blueangel666]

Let alone, not ? to save money. For what is the cost of components....
Just wondered if anyone had ever tried these patterns without components. However, he is right, "Mec" , the only ? try.
Of this for? programmerebbe, if it ever worked, only the 93c46.
As soon as I have everything, let? a test and, if positive, place the schema. If anything would help someone.
You do? know!!!

[mec241974]

the ludipippo works, I have tried personally some time ago, and the memories that pic ,them programs without problems.
Surely in the scheme of the parallel work, we look forward to your opinion :)

[Backgroop]

Guys with a few euros is a eprom programmer sensational product from the silancode the model and zp20 I believe that the costs from 30 to 50 euro and covers a lot of families complete software.. not it's worth to build one face only..

[biondo83]

Guys with a few euros is a eprom programmer sensational product from the silancode the model and zp20 I believe that the costs from 30 to 50 euro and covers a lot of families complete software.. not it's worth to build one face only..

You definitely have a professional product with the homebuilt spend a couple of euros :D

[claudio-abarth]

according to me autocostruirlo does not agree,? real savings on something, but then you have to see if it works well and if you have the software to make it go

[blueangel666]

Tried the programmer "without components" and ? a sewer !!!
Not the law, nothing .....

Now I have to try putting 5 Volts and a capacitor, how ? in the diagram (reserve). Let's see and I want to know..

I'm not going to spend money for a professional programmer. I just need to read the eeprom of my car. I do not do vehicle repair shops, then I wouldn't need to do anything.

If, in the meantime, you have some scheme, some programmer with a "couple of euro" tested and working, even the 9-pin serial, let me know.

P. S: anyway my ? a 93c56..... not a 46 as I had written

[biondo83]

http://img294.imageshack.us/img294/728/programmer.jpg

This ? it's a circuit that I had years ago and that I have tested.
The values of the components are indicated in the picture.
Z ? the diode Zenere 5.1 V.
(4K7 would 4,7 KOhm)
You don't need an external power supply.

As a program you can use Icprog or PonyProg 2000.

[blueangel666]

Very GOOD !!
And that's what I was looking for ... very simple to build. The only thing, the condenser ? from 100nF or 100mF ??

[biondo83]

Are 100nF :)

[blueangel666]

Works great !!!

THANKS Blond !

[biondo83]

I'm glad that you have solved. :cool: