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APO3 Home
Technical Information
User Manual
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Sections
Bill of Materials
Schematic
APO3 Schematic. PDF.
Embedded Software
The software is written in C and compiled using CCS's PCM compiler. The source code and object code is made available under the GNU GPL license. You are free to distribute and modify the source code as long as you follow the terms of that license.
Software Files:
Case Modifications
The APO3 case is an off-the-shelf enclosure Polycase. It is the LP-41F. We CNC mill the various cutouts in the APO3 case. The case manufacturer, Polycase, pad prints the label.
Modifications Mechanical Drawing
This drawing is alaso available as a larger PNG or PDF file.
Switch Settings
The voltage threshold and the shutdown delay are configurable with DIP switches. The switch settings are show below and are also printed on the bottom of the circuit board.
Voltage Threshold
| SW1.1 | SW1.2 | Volts |
|---|
| Off |
Off |
11.8 |
| Off |
On |
12.1 |
| On |
Off |
12.7 |
| On |
On |
13.05 DEFAULT |
Shutdown Delay
| SW1.3 | SW1.4 | Minutes |
|---|
| Off |
Off |
0 |
| Off |
On |
5 |
| On |
Off |
10 DEFAulT |
| On |
On |
20 |
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