As an application platform, the TAP-28 has shown up in some unique projects! Its low cost and easy interfacing to the real world make it ideally suited for embedded applications.
Here's a great retro clock for old-time electronics types - a clock that looks like a large analog voltmeter! It's also great to hide your clock-watching from the boss.
Don't blink at noon or midnight or you'll miss the pointer zipping back to the start.
It's a simple design, using a TAP-28 board and a cheap hobby servo.
More details here, including links to a Hack-A-Day story.
To aid his research, an irradiance meter was constructed using a TAOS TSL-230R light sensor chip.
The Amicus compiler was selected for this project as it has some functions that make reading the TSL-230R simple. The PIC18F25K20 processor required to use Amicus is a great choice for battery-powered instruments - it's happy running off a pair of AA or AAA cells.
A unique feature of this project is using a Handspring Visor PDA connected to the UART connector for I/O and data logging.
The picture to right shows the signal generator output on the PICkit 2 Logic Analyzer.
Very much a work in progress, the ice maker controller shows the outstanding utility of the TAP-28. A four-channel relay board, a pressure sensor, a multi-key pad using an analog input and a piezo beeper are each connected to a dedicated connector.
The initial tests at sensing sump level using a pressure sensor and controlling a small pump have worked well.
More about the controller