Västtrafik Gauge

Analog meter showing minutes left to next bus depature.

Status: In progress.

This is is a one-day “idea to working prototype”-project. The VT-gauge is a analog gauge displaying how many minutes there are left until my next bus to my job depatures. The analog gauge is connected to a 18F2550 controller which in turn is connected trough USB to the computer (this is going to be replaced by ethernet for a stand-alone solution.). The computer is running a C# application which fetch the real-time information about the next depature and writes this to the uC. The application can also show CPU and RAM-usage on the gauge instead of the next depature.

Prototype v1. Works very well. Its 17 minutes to the next bus in this photo.

Prototype v1. C# application. Writes next bus depature, current CPU or RAM usage or enables the uC-built in sweep-function.

Prototype schematic.

The firmware is written in Microchip's C18 V 3.16 using MPLAB 8.00 and Microchip USB-stack 1.3

Latest source code and schematic/PCB-layout can be found in repository
/software/trunk/PC/Vasttrafik-meter/ ,
/software/trunk/Embedded/Vasttrafik-meter - GEN/ and
/hardware/trunk/schematics/vasttrafik-meter/ in SVN.

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