ILEC SN10 Flight-Computer Resources
Last Update 23-June-2022
The ILEC SN10 is manufactured and sold by ILEC Gmbh,
in Bayreuth, Germany.
The ILEC web site is the primary source for the current manual and software:
In North America, ILEC products are sold and supported by:
Knauff & Grove
For Australia and New Zealand: ILEC Australia
Quick links to the most recent software and documentation:
This test version includes V3 polar, OAparse updates, and minor bugfixes:
Unified Installer version 2.48x3
ILEC SN10B Demonstration version 2.48x3.
ZIP of distribution files
In the unlikely event your ILEC instrument needs to be returned to
ILEC for service, please carefully follow these
shipping instructions to avoid delays in service:
Checklist for ILEC Instrument Shipping.pdf
Many ILEC SN10 pilots like to have a large moving map in addition to the SN10. The TopHat open-source project provides a great moving map, and SN10 software 2.41 onwards provides the following features:
Here are a few snapshots of TopHat running on a Kobo Glo in the ArcusM (click on thumbnail for larger image):
Quick movie showing TopHat receiving updated task from SN10.
Typical SN10 installations use PowerFLARM to provide both GPS and FLARM input to the SN10. The SN10 serial output echoes FLARM messages and adds information about the current task, wind, etc. The SN10 serial output is connected to both the FLARM serial input and the TopHat serial input. A USB-serial converter converts the SN10 NMEA RS-232 output to USB for the Kobo, and a 12v-to-5v supply powers the Kobo (and USB converter).
Details about how to set this up:
Diagram for SN10-to-Kobo connection.
USB Power Supply from Aircraft Spruce (no RF noise like cheapo parts on Amazon)
Complete Amazon shopping list for EVERYTHING you'll need (but skip cheapo USB power supply).
See the TopHat website for details on TopHat Kobo setup, but note the SN10 output replaces the GPS puck shown in the TopHat illustrations.
Warning: Do not directly connect a USB-serial-adapter to any SN10 port or cable except via SN10-PC cable. Follow the wiring diagram above for Kobo/PDA hookup!
Warning: Do not connect any USB device except a USB memory stick to the SN10's USB adapter!
For a decade, the ILEC SN10 has supported FLARM, and pilots world-wide use FLARM to provide GPS as well as traffic info to the SN10. Enable the optional FLARM support features on the "SN10 Options 2" page:
Make sure you set both FLARM and ILEC SN10 GPS baud rates to 19200 !
Your ILEC SN10 will optionally declare your task from the SN10 into the FLARM (only works for IGC-approved versions of FLARM).
PowerFLARM brick is supplied with a DB-9 cable to ease connections. This cable is color-coded but please double-check the pin connection of each DB-9 wire before soldering.
|ILEC SN10 Function||
ILEC Panel Cable
DB-9M pin number
ILEC Panel Cable
Cable wire color
|PowerFLARM Brick Function|
|NMEA-format serial input||
S/N >=100: pin 9
S/N 1-99: pin 3
|Green||Brown||2||serial port #2 NMEA-format output|
|NMEA-format serial output||2||Yellow||Red||3||serial port #2 NMEA-format input|
|Do NOT connect to SN10 power output! The SN10 cannot provide enough power to run a FLARM or PDA safely! Connect FLARM power input to your battery via a separate fuse!||Blue||7||+12v power input|
|Do NOT connect to SN10 power output !||Yellow||5||Power ground|
Note: The PowerFLARM serial port in the DB-9 connector must be
enabled (by default it sends no output).
Please create a FLARMCFG.TXT file on a USB-memory stick and
configure your brick to enable serial port #2.
The SN10 provides an output stream that echoes input data from your GPS or FLARM, and adds additional information for use by PDA programs. A number of pilots have damaged their SN10s by making unfortunate wiring connections... Please, to avoid damage and expensive repairs, do not do what some pilots have done:
Here's a diagram showing how to hook a PDA and GPS/FLARM to the panel cable.
There are a lot of misconceptions and myths about Total Energy
Faster is not better ! Rudy Brozel (designer of the ILEC TE probes used world-wide) wrote this classic paper explaining TE, and how to test your installation:
Brozel article on TE_Compensation
Note: Needs an update to properly explain V^2 problem with gusts.
With the ILEC SN10 USB adapter,
a USB "thumb-drive" "memory-stick" can
be used to save flight logs, load new site information into the SN10,
and load new SN10 software versions - no more carrying a laptop
to the glider, searching for the SN10 PC-cable, or fighting with
cranky USB-to-serial adapters. See:
ILEC SN10 Manual supplement for USB adapter
Download the file
ILEC SN10 USB
adapter software ZIP
and unzip it onto a memory stick (you should see ILECUSBA.HEX).
Follow the update instructions in section 10.5
of the USB manual supplement above. The link above points to the most
version of ILECUSBA.HEX. Updates to the USB software are detailed below.
- Better special character support and error checking
- Supports exFAT formatted sticks (except for loading new USB firmware)
- Adds LFN support (but NDB names must be unique first 8-chars)
- too long comments in NDB files don't cause errors
- more reliable reporting of USB stick disk label
Some DOS and Windows text editors stick a DOS-specific control character (ctrl-Z) at the end of a file. The USB adapter, as with many of us, was surprised and confused by this ctrl-Z, and the SN10 displayed an error "USB-NDB Error, Line 554, unrecog. record" with the line number pointing to the last line of the file. This update of the USB-adapter software (not the SN10 software) ignores the ctrl-Z
The SN10 got pretty excited when presented with a USB memory stick requiring too much power. To stop getting the warning message "USB stick requested too much power", it was not only necessary to unplug the stick, but to turn the SN10 off and on again and clear one last warning. This software update calms it down, only one warning ! Thanks to JJ for bringing this to our attention and sending me a stick that actually requested more than 100ma. A tenth of an Amp should really be enough power, but there are some el cheapo sticks out there that ask for more... This bug is in the software within the USB adapter (not the SN10 software).
We found a bug that caused some NDB files not to load properly (only some NDBs without airspace information). This bug is in the software within the USB adapter (not the SN10 software).
ILEC SN10 pilots who haven't yet installed an SN10 USB adapter use a laptop to upload turnpoint and map data to the SN10, and to download flight logs from the SN10. Most pilots have no problems, however...
You must use the ILEC PC-cable to connect a PC to the SN10. The wrong cable will typically short out various SN10 signals and power supplies, cause the knobs and buttons to stop working, and possibly damage the SN10 and/or the PC. The ILEC PC-cable looks like the picture at left.
plug a USB-serial adapter directly into the SN10 or panel cable.
Do not use a "standard" serial cable, or the cable you found underneath the desk in your clubhouse, or you will have problems.
The elimination of "real" serial ports on new PC's
has resulted in much pain and suffering.
We really suggest you get an ILEC USB-adapter to avoid needing a PC at the glider.
However, if you must use a PC, find an FTDI USB-to-serial adapter (beware of clones; buy from a reputable source). Older details on which USB-to-RS232 solutions work, how to use a Mac instead of a PC, and what to avoid here:
Talking to your SN10 via a USB Port (old)
For help in using a PocketPC instead of a PC, Paul Remde has provided assistance here (Thanks Paul !):
ILEC SN10 Transfers with PocketDOS
Note: In 2020 IGC reduced Volkslogger to "Level 2 security" (no world records), but it is still OK for all badges and distance diplomas. Several people have had badge applications denied because of a missing aircraft registration in a Volkslogger flight log. If you are still using a Volkslogger with an ILEC SN10, please follow the instructions below.
IF YOU DO NOT FOLLOW THIS PROCEDURE THE "AIRCRAFT REGISTRATION" WILL BE BLANK IN YOUR VOLKSLOGGER LOG FILE, AND YOUR BADGE OR RECORD CLAIM MAY BE REJECTED.
To declare a flight for an IGC badge or record, you will need to fill in the "Aircraft Registration". While the ILEC SN10 can declare the task, pilot, and contest ID to a Volkslogger, you must fill in the aircraft registration (N number) using the Volkslogger directly.
(1) Using the 3-buttons on the Volkslogger, enter your aircraft
This is under the menu:
FAI > EDIT > INFO > AIRCRAFT-REG
(2) IMMEDIATELY erase the flight recorder memory:
ACT > MEMCLR
Paradoxically, erasing the Volkslogger's memory
is what permanently saves the current FAI info.
If you do not erase the memory after entering the registration, the next time you declare a task from the SN10, the aircraft registration field will be BLANK !
Note: "Declare Task" does NOT save the aircraft registration permanently ! You must ACT > MEMCLR !
Once you've performed this procedure, you will never need to re-enter the aircraft registration in the Volkslogger - it will be permanently saved.
Please lobby your SSA Regional Director and
our IGC representative to use common sense when
homologating badge and record claims.
The aircraft, pilot and competition ID in the flight log, plus an official observer's signature should be enough !
The following are technical notes to help create software and services that work with the ILEC SN10.
The ILEC SN10 optionally produces output to drive an
in-cockpit PDA. This output is used by some
popular PDA software. Here's how it works:
ILEC SN10 PDA Support (documentation needs update for latest task output as used by TopHat)
The ILEC SN10 displays a moving map including airspace
features. Starting with airspace information in Tim
Newport-Peace's format, the information is translated
into the SN10's internal format and appended to the
Using utility software we provide, this is performed
automatically by some popular PC programs and web sites,
including StrePla and John Leibacher's World-Wide
Turnpoint Exchange. Here's how the process works:
SN10 Airspace Support
Copyright © 2010-2022 - Dave Nadler - All Rights Reserved
Contact Dave Nadler:
USA East Coast voice (978) 263-0097