Innovate Motorsports OT-2 - Manual (Page 24)

This extra resolution comes at the expense of our Low Priority inputs. These channels all share
the ECU ‘bandwidth’ once used by VSS alone. But, this lets us have high resolution critical data
combined with lower priority, lower resolution data in the same log.
7 Tip, Tricks, and Troubleshooting
1. Can I use the Wi-Fi network advertised by the OT-2 for other things?
Absolutely! In development we use the same network to move files between laptops and the
iPhone in the vehicle. The OT-2 has a simple “DHCP server” built in, so there is no reason that
you could not use it to, say, play a Wi-Fi multi player game between iPhones or gaming devices
in the vehicle. However, we would advise that video gaming be limited to passengers! Also, only
one client can be connected to the OT-2 for data logging at a given time and responsiveness will
generally be better if the network is not otherwise in use at that time.
2. Most the time my iPhone connects to my hardware right away, but sometimes I get a
‘no hardware’ warning and the software will connect 20-30 seconds later, why?
We have strived to make connection as painless as possible. The OT-2 offers a unique network
name for the iPhone to remember, the hardware offers DHCP services to expedite network
initiation, and the software does automatic discovery, connection, and retry. Most the time, this
works very well. You pull out the iPhone, start the app, and, the connection is there.
The times it does not work, network setup is delayed or the proper network connection is not
established. This could be due to a number of factors. For example, the iPhone may still be
getting a faint signal from another known network and is ‘reluctant’ to drop that connection and try
a new one. Similarly, the DHCP services might have been ‘missed’ the first time around. They
use a non-guaranteed form of network communication, and Wi-Fi is very susceptible to
interruptions and errors.
As the question suggests, these issues often self resolve after a delay. But the following steps
can virtually always expedite the process:
1. Exit the application
2. Open
“Settings”
3. Select “Wi-Fi”
4. Confirm that the OT-2 is the selected network
5. Restart the application
Wi-Fi is a large battery drain on the iPhone, so the OS uses some pretty sophisticated rules for
radio activation and power settings. So, even when the steps above do not involve ‘doing’
anything, simply opening the settings has the effect of powering up the Wi-Fi and activating the
network connection (since the Wi-Fi tab itself activates the Wi-Fi circuitry to ‘scan’ for other
networks).
3. When I select “Wi-Fi” on the “Settings” page in my iPhone, I sometimes have to wait
for my OT-2 network to appear, is this normal?
Yes. The OT-2 advertises the network with something called a ‘Beacon’. The beacon is sent
periodically and the iPhone ‘listens’ and updates its network list periodically. Sometimes it takes a
few scans before the two sides sync up. This is typical for all Wi-Fi devices.
4. Why doesn’t the Economy Meter just show MPG?