TurnCycle automatically backs up cyclists' hand signals with LED displayView gallery - 4 images
Although we've already seen various illuminated turn indicators for bicycles, the fact is that cyclists should still also be using traditional hand signals. Activating an electronic indicator while also making a hand signal, however, could be a bit of a hassle. That's where the TurnCycle comes in. It uses the rider's hand signals to automatically activate a separate LED turn indicator.
Here's how the TurnCycle works ...
The user starts by powering up a wrist bracelet, and slapping it onto their left arm. When they subsequently make a left-turn signal (arm straight out), a right turn signal (arm angled up at 90-degree angle) or a stopping signal (arm angled down), a 6-axis accelerometer in the bracelet detects the movement.
Using Bluetooth, it then transmits a signal to an LED display. That device responds by displaying a series of sweeping left- or right-facing animated arrows, or simply by flashing in the case of a stopping signal. The display turns off after 25 seconds, using an audible cue to let the rider know that it's done so.
Both components are water-resistant, with the bracelet receiving power from a coin cell battery and the display running off a USB-rechargeable lithium-ion battery.
If you're interested in getting a TurnCycle system, it's currently the subject of a Kickstarter campaign. If everything works out, a pledge of US$90 will get you a one-display package, with $180 required for a kit with both front and rear displays.
The system can be seen in use, in the following video.