SECTION 4. Using the Ground Support Unit (GSU)
4
Using the Ground Support Unit (GSU)
The GSU is a small terminal with an LCD with two lines and 16 characters each and four buttons (up
↑
↑
, down
↓
↓
, escape
✘
and enter
✓
).
Figure 3: An AeroDesignWorks GSU.
WARNING
Do not permanently install the GSU in the aircraft model, as the LCD might have a negative impact on
the RC’s range!
Regardless, the GSU can be used to change ECU parameters while the engine is running.
• The menu can be navigated up (
↑
↑
) and down (
↓
↓
), sub menus can be entered (
✓
) and left (
✘
).
• Values can be adjusted up (
↑
↑
), down (
↓
↓
), saved (
✓
) or discarded (
✘
). Changes to values are written to the
EEPROM automatically upon saving them.
• When the engine is in
standby
mode, the start sequence can be initiated by simultaneously pressing up
(
↑
↑
) and escape (
✘
). This might be needed if one H
ORNET
-III is used to simultaneously control more than
one engine.
• The expert menu can be unlocked by simultaneously pressing and holding up (
↑
↑
) and down (
↓
↓
), see
Section 4.5.6.
4.1
Power on messages
After starting the ECU, some messages will be displayed on the GSU. The startup procedure will also produce
some messages.
1. ECU and firmware version, e.g
HORNET-III CS E
V3.0 2021-10-22
In this example, a H
ORNET
-III-ClubSport is used and its expert mode is unlocked, signified by the last
character
E
on the first line.
2. The engine that was connected last, e.g.
005 AEROD.WORKS
B140F
The three digit number is the model ID of the engine.
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