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MaE Counter Panels

These are two big panels, each one providing 8 red and 8 green numbers of 3 digits of 7-segment displays.

Purpose and requirements

These “Counter Panels” have been developed for the easySagra project.

We needed a way to display the number of ordered articles (thus “counter”) in two different panels.

A TV flat panel was a direct solution, however not the best. Main requirements were:

* Ethernet link, possibly in only one object; * Mechanical robustness to frequent mounting/unmounting/transporting; * Mechanical robustness to hard environment (heat, moisture, oily smokes, etc); * Indicate 8 different articles, for each two different values ranging (1-999), thus 16 numbers of 3 digits, half for color; * Minimum dimensions such to ensure visibility from 4-6 meters of distance.

Development

Entire development has been made using Open Source Software.

Chassis

Chassis has been designed using QCad. Main issues: easy assembly and disassembly, sufficient air flow, mounting points for all the contents.

Displays

Each couple of displays (red and green for simplicity), is provided by a separate PCB.

PCBs have been designed using gEDA PCB. Then have been realized by professional service.

Main board

An ethersex based board have been used as main board and ethernet interfacing. A simple module has been written to drive display boards.

Realization

Two phases: * PCBs assembly, repeated by 16 times (plus some spares). * Components assembly in the chassis, repeated for the two panels. A particular attention for order and easy maintenance.

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Contact

For any info you can write to:
Per qualunque info potete scrivere a:
info[at]maetech[dot]it

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