Thomas

Hi Mister Matt, Nice writeup! One thing though: The analog inputs on the Arduinos can also be used as general I/O similar to the Netduino. On the UNO for instance, I2C is specifically on two of the analog pins. /Thomas

It is possible to do this with a Netduino, though at the moment, the Netduino part will be a bit more complicated than the Arduino example that was linked to. This is because the USB connection on the Netduino is usually used for Visual Studio programming and debugging, but it can be programmed to act as a virtual serial port (USB CDC). A future release of the Netduino firmware should make this easier and have a sample to work out from, as far as I have understood. There are a few more detail in this thread under Netduino Beta (http://forums.netdui...e-v412-alpha-0/) The LabView part should be the same, though I haven't tried it (don't have LabView) /Thomas

Hi Steve, One option to emulate or get inspiration from could be the menu system used in the older HP laser printers... I'm going to do something similar on a little Arduino based board (http://www.hackmeist...cd-io-backpack/), but with only up, down and select (http://www.sparkfun.com/products/8184). /Thomas

Hi, You could also use a digital potentiometer like http://www.maxim-ic....vp/id/4205/t/al /Thomas

Today I tried using interrupts for all the signals from the Mag Stripe reader, and saving the timestamps for later comparison, and that seems to work, even for really fast swiping. I'll try to wrap it all up in a nice library with error correction and all, and post it for all of you to try out and comment on. /Thomas