Friday, 26 August 2016

Raspberry Pi: headless, windowless file management

I have a number of Raspberry Pi music players that I need to add more tracks to from time to time.


As these players only boot to text (not a desktop) I can't use folder shares or VNC to access the file system.


Fortunately there is another very easy way. I can browse the file system by using secure shell file transfer protocol (sFTP).

Tuesday, 23 August 2016

Using Sockets with Gambas

Sockets are defined as communication end-points, and relate to a means of computer comms using IP addresses and ports.


Sockets are generally used to send data between two computers on a network, but may also be used to communicate between two programs on the same computer.


This post provides a simple introduction using the Gambas Client and Server Socket components.

Tuesday, 9 August 2016

Garmin eTrex: walking with GPX route files

We sometimes go for country walks using simple directions printed from the internet, usually accompanied by very simple maps.


These are OK as long as you don't take a wrong turn or stray off the correct path for some reason.


Although I cannot install topographical maps on my Garmin eTrex 10, I can use Route files.

Thursday, 28 July 2016

Ethereum: wallets, accounts & contracts

Continuing this short series of posts on Ethereum for absolute beginners, here I discuss wallets.


As with many aspects of the Ethereum World, the terminology around "wallets" often seems strange and ambiguous, with descriptions like "Paper", "Presale", "Multisig" and "Brain Wallet".


However, I really want to concentrate on options which I think are best suited to those new to the subject.

Monday, 25 July 2016

Ethereum: what do you need to know?

How much do you need to understand about Ether and the BlockChain?


There is a mountain of information out there on virtual currency and the BlockChain, but it seems to me that the vast majority is aimed at the initiated.


In other words it is mostly written at a level that assumes you already understand the jargon and have a good understanding of the basics.

Saturday, 9 July 2016

Ethereum: let's buy Ether

There is no better way of learning something than doing something.


So I decided to create a new wallet and buy Ether.


I found the whole process pretty straightforward, once I had selected the most appropriate place to buy Ether.

Thursday, 7 July 2016

Ethereum: my new shiny Ether Bar

At a recent family celebration, I was presented with a shiny copper bar.


I immediately tested it with my teeth, thinking it may be like those metal coins we seem to buy the grand children every Christmas, filled with chocolate.


But this was a solid metal bar, made from brass with a bright copper finish.