Quote from: DobZombie on August 04, 2013, 03:33:42 PM

Quote from: Bluestreak66 on August 03, 2013, 07:09:59 PM

Quote from: DobZombie on August 03, 2013, 02:41:51 PM

So can somebody link me to the 14mhz and the 16mhz crystal oscillator that can be used? can I just buy any old 4 pin crystal?
do I have to upgrade the power?
I'm a little thrown off by some of the specifics of the thread, and I want to get in start soldering (I'm awesome with a soldering iron

)

Here is a filtered list of oscillators on digikey of different freqencys http://tinyurl.com/m54mczl
Specs need to be: 3.3v, 5mm X 3.2mm, 4 lead SMD. The only ones that are pin compatible are the Tri-state versions with the OE pin. Check the data sheet to make sure it's pin compatible. The ones in the above link meet these specs. The one I am currently using is http://tinyurl.com/q98ua2j I also have a 18.43 and 20mhz version but have yet to test as I'm waiting on power supply parts. And yes power will need upgraded. Replacing just the crystal without any other changes put the board over the current limit for usb spec and at 1.05 volts it will not be anywhere close to stable. Read my previous post for voltages. Your going to need a hot air gun at the very least if you want to replace these with any success.

Rightio, so I'm just here to dumb this down a bit (he he he

) and make this a touch easier to understand for the layperson that wants fiddle with this sorta thing.

so first I should piss off the solder mask for better conductivity? like so...

Quote from: Bluestreak66 on July 23, 2013, 01:00:36 AM

Then I'd have to put down a very thin layer of an electrically insulating, but thermal conducting material. This would prevent shorting on the now exposed PCB?
I could then add heatsinks and such to transfer more heat as needed?

Then I could replace the 12Mhz crystal oscillator with either...
a 14.31818MHz OSC which would produce approx 397Mh/s
or
a 16MHz OSC which would produce approx 444Mh/s
or
a 18.432MHz OSC which would produce approx 511Mh/s

So far so good?

Now I assume I'll have to replace a resistor or 2 to increase the power from 1.05v to 1.15v (or more?) and at what point (of OSC MHz increase) does the voltage have to be increased?

Now assuming I'd need a hot air rework station like this one to complete all this?

How does this sound so far?

AMIDOINITRITE?!?

Sorry I missed your post, but yea thats that how it would go. As far as Voltages/frequency I plan to post a chart up of what works @ what frequency, of course your mileage will vary. Not all chips are created equal some will require more voltage and some will require less but if we can get a good sample going I think we can create a base line to go off of. I ordered some oscillators and some other parts to make it easier to tweak voltage than by replacing resistors. I'm still waiting for one of my orders.

Quote from: haxtormoogle on August 05, 2013, 01:59:02 AM

I took everything I learned so far and make a post on my website: http://wtfmoogle.com/?p=3334 How to overclock your Block Erupter and Possibly Destroy it in the process.

Thats a good summary I don't think it was the 20mhz that killed it rather the 5v clock source. I got a variety of oscillators up to 24mhz so we shall find out soon enough. Grin

If anyone knows of any adjustable bench power supplies or cheap oscilloscopes for sale let me know. I'm transitioning jobs coming up here in a few days and won't have access to the equipment I do now so I'd like to buy some for hobby use. PM me if you know of any for sale.