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When developing an embedded application using analog sensor inputs, testing at specific sensor levels can be difficult.  For example, in my icemaker controller project, actions need to occur at certain water levels.  Using the actual sensor...

I recently had use for the simple signal generatorI described before for testing out some piezo buzzers I got for next to nothing.  I reloaded the code onto a TAP-28 board...

Header pins are ubiquitous on dev boards.  Jumpers can be used to make connections during tests and code development but real-world applications need reliable connections.  Connectors for single row headers have always been a problem for me,...

I had a couple of issues when using David Barkers module NMEA.bas on my Big GPS Clock project. In particular, variables were being corrupted making the program very unstable. I'm not familiar...

I'm working on a control system that will have several relays, a bunch of LEDs and a number of switches.  I was rapidly running out of port pins on a TAP-28 board to handle all the desired I/O.  Possible solutions included adding an I2C port...

Most micro-controller projects use port pins for outputs, often to turn on an LED or motor.  When using a port pin as an output, we usually think of two states.  A low state means the pin is connected to ground, while a high state means the...