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Electrons: Trying to understand transistors

And introducing the 2N3905 - ten from eBay for 99p

Electrons: Trying to understand transistors

So this little metal and plastic tripod is the basic building block of all modern electronics, either appearing on its own, as it does above, or in myriads printed on a modern chip.

They are a switch, I'm told, and though I have replicated circuits with them in before, I've never really been able to understand what they do and how to use them.

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20-Dec-2014 Permanent Link

 

Cheap Nano Arduino ATmega328 board from eBay

And installing the CH340G drivers on OS X Yosemite

Cheap Nano Arduino ATmega328 board from eBay

After  success with the Trinket I decided to try out a cheaper board from eBay.  For £2.89 I bought a 'Compatible Nano V3.0 - ATmega328 Mini USB Controller Board'  When setting up the Trinket it warned that you couldn't use the IDE  for other devices - but I decided to have a go.  This board came with the headers already installed - and also this time had a free usb cable with it.

Plugging it into the Mac revealed that unlike the Trinket this has more than two mini leds onboard - one of which flashed manically when plugged in.  I loaded up the IDE and one of the eBay listings I found for it said I had to select the Pro-Mini ATmega328 option.  There was a 5v and 3v options - so I'm guessing that the v3 stands for 3 volts - so tried that.

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12-Dec-2014 Permanent Link

 

ATI Radeon mobility x2300 on Windows 8.1

Installing legacy 3D drivers so Minecraft works on a Vaio VGN-CR42Z

ATI Radeon mobility x2300 on Windows 8.1

I have an older laptop that the kids use to play minecraft.  I've been experimenting  with Windows 8 and installed it on this machine, but now it won't now run Minecraft.  I know the physical hardware is capable of running it, as it ran in Windows Vista and 7.  The issue revolves around the generic windows display drivers that 8.1 selects at instalation not supporting the 3D calls that Minecraft needs.  Simply downloading new drivers from the graphics card manufacturers site should solve the problem, however the card in this laptop is no longer supported by AMD or ATI.  

Finding out how to do this on the web took me a couple of weeks. So here is what I had to do to get Minecraft to work on Windows 8.1 on a Sony Vaio VGN-CR42z with the Radion Mobility x2300 card.

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9-Dec-2014 Permanent Link

 

It's all about me...

I'm a 46 year old married father who works with websites for a living. Doing that for work means I dont often update this site, unless I can think of something useful to say. I mostly like taking photos - and most of my internet presence now will be related to that.

Something else?

Dont you find it ironic that people invest so much in bringing you to a website only to give you a list of links to take you elsewhere? So I'm not going to give you a list of my favourite haunts to send you away from this site.

(c) somewhere in space and time: M.Norman