Jump to content

Using two leds on EEPROM reader cable instead of a zener diode.


Recommended Posts

Need a checkup on building a EEPROM reader from a person with a background on electronics.  Can I use two leds in series instead of a 5.1V zener diode rated at 1W for a EEPROM xbox original reader?  Can a 3.0V coin battery or 4X1.2V AA batteries @ 4.8V be used as a external powersupply directly?  Would 4.8V have too high of mAh or current for the EEPROM chip?  I plan to use a serial to RJ45 with a connector to ethernet as a cable.  I am using a bread board to create the circuit.  I plan to use the materials I already have.

Link to post
Share on other sites
3 hours ago, Aero_105 said:

Need a checkup on building a EEPROM reader from a person with a background on electronics.  Can I use two leds in series instead of a 5.1V zener diode rated at 1W for a EEPROM xbox original reader?  Can a 3.0V coin battery or 4X1.2V AA batteries @ 4.8V be used as a external powersupply directly?  Would 4.8V have too high of mAh or current for the EEPROM chip?  I plan to use a serial to RJ45 with a connector to ethernet as a cable.  I am using a bread board to create the circuit.  I plan to use the materials I already have.

I am sure it will not work, as an LEDs only pupose is to emit light and does not have any voltage regulator in it.  If you are in Canada search for BC Robotics as they have all the supplies you will need to build your eeprom reader under $5. Again I am no expert in electronics it might be possible maybe some other member can clarify this better.

Link to post
Share on other sites

it all depends what the zener diode is doing in circuit, it could be to stabalise the power, or to drop the voltage, if i had to guess having not worked this mod, i would say that its probably stopping spikes in the power rail, reading and writing requires smooth stable voltage.

Link to post
Share on other sites

The Zener diodes are to limit the voltage to 5.1 volt so no a led will not work

 

Cheers

SS Dave


Soft modding is like masturbating, It gets the job done but it's nothing like the real thing.

 

 

Link to post
Share on other sites

BC Robotics is an option.   Would 1/4W rating resistor be ok?  The zener diode is rated at 1W.  What is the voltage from the serial port is it like 12V and possibly 500mA?  Ian_T off of forum Afterdawn used two led in series and it worked for him.  I wonder if his circuit would have an over voltage?  Search "led" in these two pages ctrl + f in google chrome.

https://forums.afterdawn.com/threads/how-to-read-your-xboxs-eeprom-and-get-the-hdd-key-without-removing-the-chip-or-modding-the-xbox.463026/page-6

 

https://forums.afterdawn.com/threads/how-to-read-your-xboxs-eeprom-and-get-the-hdd-key-without-removing-the-chip-or-modding-the-xbox.463026/page-16

Link to post
Share on other sites

This is the one I have used.

1/4w resistors are fine and the zener diode are to stop the voltage from going above 5 volt, the original serial ports where +15 volt fo a high signal and -15 volt for a low signal so that equals up o 30 volt.

If you really want to a led is about the same as a 3.6 volt zener

 

1083027377_simpleeepromreader.PNG.8098223e9d336ed48612329e7c28cdf1.PNG

 

Cheers

SS Dave


Soft modding is like masturbating, It gets the job done but it's nothing like the real thing.

Link to post
Share on other sites

Well I managed to get the eeprom bin file from the original xbox.  At first I got a "busy bus error -11".  I had a 3.0V coin battery it was not enough to power the chip.  I then ended up plugging in the original xbox to power the chip.  Ran PonyProg2000 with no issues.  After disconnecting the pin header the leds lit up.  So the power must of diverted for the leds to light up.  In device manager I disabled the com port before disconnecting the cable to work on the circuit with the original xbox unplugged just to be safe.

  • Like 1
Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Similar Content

    • By Tingle64
      Hello OG Xbox forums, I've worked myself into a pickle again.
      The short version:
      I need to get a file off of an HDD that throws an error 16 (won't boot, Corrupted dash) but still works. Can I get it off using a second Xbox and a file manager, or do I need to buy an adapter and use Xpolorer 360 to get it off?
       
      The long Version: 
      While preparing to TSOP flash my Xbox, I was copying saves over from the had drive onto a memory card for safe keeping. However when that didn't work with the UnleashX dash I tried to switch over to the default dash. This corrupted the files and now the Xbox throws an error 16 whenever it tries to boot from the HDD. Since it is an error 16 I can't boot from disc since the Xbox preforms the time check before it checks the DVD drive, and since the Xbox was only softmoded I can't just format a new drive and throw it in. From what I've found online I can use CHIMP and my working TSOP'd Xbox to recover the dash files on this second one, however I need the EEPROM.bin file. Can I get it off using a file manager that can detect both drives using the working TSOP'd Xbox, can CHIMP find the EPROM.bin file on the slave HDD and recover from that, or do I need to purchase an IDE adapter to connect my Drive to a PC via XPLORER 360 and then transfer it over to the XBOX?  
      Thanks. 
    • By TrantaLocked
      I bought a couple used IDE Seagate 160GB ST3160215ACE drives for cloning and backup. I'm a bit disappointed though because despite them being the same model, one of them vibrates significantly more than the stock drive while the other vibrates like normal but has a longer boot to dashboard time. I tried swapping the IO chip that screws to the bottom of the drive with no difference. I also tried re-cloning with Chimp and it resulted the same way. With that second, slower boot drive, the first time I tried to clone with Chimp it showed something like "IO error" a few times and so I had to restart the Xbox and reseat everything and then Chimp went ahead and cloned with no errors. I wonder if maybe there are bad sectors that are slowing it down maybe?
      You'd think it might be something like the drive being set to 5400 RPM mode in its firmware (if that's even possible), but then why would it take longer to boot than the stock WD 8GB 5400 RPM drive? So I'm not sure if I should be fine or if there's anything I can do to solve this or maybe just get another new drive? I don't like the extra vibration on the first drive but I also want a fast bootup, because the second drive adds like 10 seconds.
    • By hastings298
      Anyone got a good guide on installing LEDs or a cathode tube into an original Xbox? I guess i need to know some good 12v and ground points

Board Life Status


Board startup date: April 23, 2017 12:45:48
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.