More serial port foolishness

So I’m still banging my head against the difficulty of making a simple serial connection between my Raspberry Pi and an ATMega chip on a daughter board. And I still have not got it working properly. Overnight it occurred to me that I ought to have turned off the serial port login on the Raspberry …

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Another try at reading a MCP3002 ADC with Bus Pirate

A few months ago I got somewhat stuck trying to understand how to “join the dots” between the Bus Pirate and a MCP3002 SPI analogue to digital converter (ADC) chip. Finally I abandoned the effort and moved on to other things. More recently, however, I have succeeded in sending data to a MAX7219 LED matrix …

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HotPi multi-purpose board

This is turning out to be a great week for new stuff. Yesterday I got a package of goodies from China and today I got a HotPi board from local Raspberry Pi specialists “The Pi Hut”. The board was funded by a kickstarter project. Unfortunately I did not know about it until after the kickstarter …

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Fitting a Real Time Clock to Raspberry Pi

The Raspberry Pi is a great little board, and it still amazes me the huge range of things you can do with it. However, it’s not without its limitations. One of these limitations is that it has no “real-time” clock. Sure, it has internal counters and the like, and when running under Linux it will …

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