CheckPoint Two
more info
Bluetooth
CheckPoint Two has been tested - successfully - with the following sensors.
- wahoo (must be 'speed' model not 'cadence')
- xoss (there is only one model, it is selectable between speed and cadence - select speed)
- cycplus (must be 'speed' model not 'cadence')

If you use other sensors, please provide feedback to the developer.

Using Bluetooth
- purchase of a speed sensor is required
- follow setup instructions from the manufacturer of the sensor
- securely mount the sensor to the hub of the front wheel
- if not waterproof, seal the sensor with duct or electrical tape

Starting Bluetooth-
- Turn on bluetooth using iPhone's settings - Settings...Bluetooth...Push slider to ON
Most bluetooth sensors do not transmit if they have been stationary for several minutes.
- Roll the front wheel through one revolution to activate the sensor.
- open the app, make sure Bluetooth is ON in the apps' setup page
- go to 'GO' tab
The sensor should connect automatically. Special 'Pairing' is not required.
In the app you will get confirmation of the sensor model number on the bottom of the 'GO' page
If there are several riders nearby with Bluetooth sensors, you may need to separate from them
- if necessary allow about twenty feet of separation from other riders.

If the above steps do not get you connected - do the following
- turn off the app
- turn off bluetooth in iPhone settings.
- activate the sensor (roll your wheel) - sensor will start blinking
- start the app, make sure bluetooth button is on in app
- go to 'GO' page.
You will receive a system dialog box telling you to turn on blue tooth, with two choices 'OK' and 'Settings'
Choose 'Settings', iPhone settings will open, turn bluetooth on, close settings,
return to app - you're good to go

Mileage Accuracy
In some locations GPS may provide acceptable accuracy in tracking mileage taveled.
For best accuracy use of a Bluetooth sensor is recommended.
When using Bluetooth it is important that the wheel circumference is entered accurately.
Whether using Bluetooth or GPS, rider input can help to assure that displayed mileage remains accurate.
Whenever the club posts a mileage on a turn, gas stop, reset, etc. - use the swipe feature to tweak the
displayed mileage to agree with the posted value.
For example - at a gas stop. It can take some 'riding around' to locate your gas can.
When ready to leave the gas stop, swipe left or right until displayed mileage is exactly equal to gas stop mileage.
At resets, free times and gas stops - always take advantage of the opportunity to tweak mileage to the exact
mileage shown on the route sheet.

Wheel Circumference
Just as with an electronic odometer, when using a bluetooth sensor, the wheel circmference must be known by the
app in order to calculate and display distance travelled. CheckPoint Two requires user to input wheel
circumference on the setup page - in
milimeters (mm).

Measuring Wheel Circumference
Roll bike forward until valve stem is perfectly at the bottom of the wheel. Put a mark on the ground next to valve stem.
Carefully roll the bike forward in a straight line until the valve stem is again perfectly at the bottom.
Mark the ground again next to the valve stem. Measure the distance between the two marks as wheel circumference.
If you measured in inches, multiply by 25.4 to obtain milimeters.
Example 84.75 inches x 25.4 = 2153 mm. Enter this value on the setup page.

Reset all Data
When you are ready to enter data for a new race, all of the input data from the previous race can
be deleted easily.
On the setup page - select button at bottom right corner of screen.
Data .. Reset.
A dialog box will ask if you are sure - select OK.
All reset, free time, speed changes will be deleted.
Also input data from the setup page will be set back to defaults.

Approaching a Possible Check Point
At all times the next possible check point mileage will be displayed on line two
At all times you should try to keep 'On Time' displayed on line one
If you are riding on time and within 20 seconds of ideal time, as you approach a possible you
will obtain a warning - on line one 'Check' and the mileage of the upcoming theck.
As long as you keep 'On Time' in display, you will never burn a check.
If the display changes to 'Early' you are at risk of entering the check hot.
Once the time has arrived to enter the check, the upper right display will change from
'Check 12.4' to 'Go'.
At the same time you will hear the multi beep signal indicating time to go.

If you are approaching the check mileage but more than 20 seconds behind perfect time,
you will not receive the yellow check warning, You will see 'On Time' and the 'Go' indicator.

If you are approaching the check mileage but you are early,
you will receive the yellow check warning. You will not get the 'Go' indicator unless you
slow down into the 'on time' range.

If you are approaching the check mileage but you are late,
you will not receive the yellow check warning. You will just see the 'Go' indicator

If you are within 20 seconds of ideal time, as you get very near the check, the display
of 'Chk Time' (third line of dispay) will change to yellow color. This field shows seconds of key time.
Approaching the check, this field is advancing :40, :41, .... up to :59, :00.
Reaching :00 is another indicator that it is safe to enter the check.

Key Time
The setup page includes a live display of key time. This display should be set to exactly match
the key time displayed at event sign up. Do not adjust key time for your row number. The app will
take care of that. Key time on setup page should EXACTLY match key time dispalyed at sign up.
The app uses your phones system time as the staring point for key time. If the club is using the
time from a reliable source, including perhaps their cell phones, you will most likely not need
to make any adjustments to key time. But if setup page key time does not exactly match the club's
key time - you should make adjustments on the setup page. It should match within one second.
To adjust key time, press the H button to cycle between H (hour), M (minutes), S (seconds) and
adjust as necessary.


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