What are BlitzButtons?
BlitzButtons are a dedicated Bluetooth remote and handlebar button set compatible with the full version of the RallyBlitz Nav Pro app for the iPad mini that allows for Odometer adjustment and roadbook advance/reverse as well. The base app is free but to use the Bluetooth remotes and other enhanced functions you have to buy the full app. They also work with the newly released Rally Navigator roadbook app too!! I know the buttons work with other apps that use volume +/- and next/previous track inputs, even on android devices. The odometer adjustments are in the standard +/- 0.1 increments. All the buttons will work with a continuous push and will scroll continuously or change the odometer until released.
The Bluetooth boards are the Adafruit Feather 32u4, programmed with the latest RallyBlitz keyboard emulator programming. The boards are powered by the USB cable and have backup power from a small lithium battery in the case. When plugged into a USB port the switches are automatically powered on. The rocker switch on the case allows for the internal battery to power the device and battery charging if connected to a USB connection. There is battery charging/discharging safety built into the board but as with any battery these days be mindful to turn the device off and make sure all the lights are off on when done. I would strongly recommend the BlueSeas USB ports wired with a 5amp fuse to the battery to supply power to the iPad mini and the button set.
The translucent case allows you to see the status of the board via its 3 lights. When you power it on there is a red flashing light. Once paired there is a solid blue light and when charging the onboard battery there is a yellow light at the other end of the board. The board enclosures are water resistant but not totally waterproof and should be placed somewhere they won't get drenched and remove before washing the bike.
Digital Rallye Reference Page