USB BLOCK ERUPTER EBAY HOW TO
USB BLOCK ERUPTER EBAY SERIAL

The cabinet ceases in office after the holding of legislative elections, remaining in a caretaking role until a new cabinet assumes office. It is headed by the president of the Community of Madrid, and additionally includes the appointed vice presidents and consejeros (cabinet ministers). Until the 1998 reform of the regional statute it was formally called Council of Government of the Community of Madrid ( Consejo de Gobierno de la Comunidad de Madrid). The Government of the Community of Madrid ( Spanish: Gobierno de la Comunidad de Madrid) is the collegiate body charged with the executive and administrative functions of the autonomous community of Madrid, Spain.

Lets start off first with a simple overview of the board Here is how I got my block erupter overclocked to 56o MHz briefly before it died.Real Casa de Correos, Puerta del Sol 7, Madrid The heart and soul of your Block Erupter. Please note: putting a heat sink on top of this chip will have little if any effect as the heat side of the chip is soldered to the board. You are better off with changing the stock heat sink on the back of the board, or adding on to it as I will show you later. The 4 large 2 pin wide traces are all the main + voltage to the asic. To maximize heat transfer I suggest you carefully remove the solder mask on the back of the board where the asic lies on the other side. I did this with a dull Exacto knife and very little pressure slowly scraping across the surface. If you go this route: USE A NON CONDUCTING THERMAL GREASE!!! or Heat transfer pad!!!! Artic silver may short things out and leave you with a mess to clean up, if not a dead board.

USB BLOCK ERUPTER EBAY SERIAL

This contains the firmware that bridges the usb – serial adapter chip to the asic. If it does your doing something wrong. I have seen sales on ebay of heat sink kits for the block erupter that put a heat sink on this chip You would be stupid to put a heat sink on this as it will never get warm. Next we have the Silicon Labs Uart – usb adapter. Not only does it do the proper conversion, It coverts the 5v usb to 3.3 that powers the AVR chipĪgain you would be stupid to put a heat sink on this. Moving along we get to the fun parts :) This is where your soldering skills will take place.īehold the asic voltage regulator and all its glory. You will learn to hate this chip :D as it will be the source of many of your hardware error issues.

USB BLOCK ERUPTER EBAY HOW TO

Here is the datasheet, become familiar with it as you will need to know how to properly modify the core asic voltage. Please note the 3.3v is very important here, as this may be the thing that ended up frying my asic. The core asic clock speed is this crystal times 28.

Here is a list of oscillators on Digikey you can experiment with if you dare. Lastly the resistors you will need to modify to change the core asic voltage. The USB in scale to a banana Relevance When the USBs were first announced, the Bitcoin mining difficulty was about 9,000,000. The average price you’ll find for one is 4.00, usually from Amazon or eBay, although eBay tends to be less expensive. R1 is conveniently the same as R1 in the datasheet for the Regulator and the same applies to R2 :) Today, Block Erupters can be bought solo or in bulk. To get a higher voltage you can change R1. I used a 10K ohm pot to adjust the core voltage with a volt meter on the pin I soldered to the main asic core voltage line.

You should be very careful if you use my method and always have a volt meter on the asic core voltage line. I mostly did changes with the Block Erupter connected to my bench power supply with the current limited to prevent any mishaps. To the left and right of the Block Erupter are my 2 different clock gen circuits I used. I used a simple machine pin style female header so I could easily swap out the crystal. I found 2 different schematics on Google images.Ĭloser view of the board. This one gave me more trouble and wasn’t too stable.Ĭloser view of my modifications. I put a capacitor on the main usb voltage lines to filter out any noise it might have picked up. Removed R1 and installed a 10k ohm trim pot. Voltage pin probe on the asic core voltage line to monitor with my volt meter. Trick is to set the trim pot to 1.2K ohms before you solder it in place then you can just make slight adjustments to home in a stable voltage. I then removed the clock gen and put it on its side. This way I could just solder a small wire to it to get the default clock back to test if I did any damage at any time. I also soldered in a pin that I could connect my oscillator circuits to. Lastly I added a mini heat sinked 5v fan to the back held on with thermal grease and a few small dabs of hot glue on the sides. #USB BLOCK ERUPTER FOR LITECOIN SERIAL#.#USB BLOCK ERUPTER FOR LITECOIN HOW TO#.

Usb block erupter ebay