The AArduino

Although the Arduino is very convenient, I wanted to build my own from parts you can buy from RS or Farnell. Rather than cloning the Arduino, I took the opportunity to make some changes: I removed the USB/Serial interface because I've got a ICSP programmer, but added crude support for dual AA battery support. The AA cells suggest a good name: the AArduino!

Martin Oldfield, 22 Jun 2011

Perl and Xcode 4

I just bought a new Mac and installed Xcode 4 on it. However, I couldn't build any Perl modules with XS (bits of C) in them. Here's a solution!

Martin Oldfield, 22 Jun 2011

Unicode games with perl, MySQL, and XML

Not for the first time I wasted a few hours getting Unicode things to 'just work' in a Perl project which mixed XML and MySQL. Hopefully these notes will prevent another repetition.

Martin Oldfield, 22 Jun 2011

The Agilent U1272A and MacOS

Brief notes on reading data from an Agilent U1272A multimeter from MacOS.

Martin Oldfield, 22 Jun 2011

MacOS X and the Olimex AVR-ISP500

How to make the Olimex AVR-ISP500 work on MacOS 10.5.6: install version 1.005 of the firmware.

Martin Oldfield, 22 Jun 2011