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| Smartstraps | Information on creating and talking to smartstraps. | smartstraps | false | /guides/smartstraps/ | false | true |
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The smart accessory port on the back of Pebble Time, Pebble Time Steel, and Pebble Time Round makes it possible to create accessories with electronics built-in to improve the capabilities of the watch itself. Wrist-mounted pieces of hardware that interface with a Pebble watch are called smartstraps and can potentially host many electronic components from LEDs, to temperature sensors, or even external batteries to boost battery life.
This section of the developer guides details everything a developer should need to produce a smartstrap for Pebble; from 3D CAD diagrams, to electrical characteristics, to software API and protocol specification details.
Contents
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Availablility
The Smartstrap API is available on the following platforms and firmwares.
| Platform | Model | Firmware |
|---|---|---|
| Basalt | Pebble Time/Pebble Time Steel | 3.4+ |
| Chalk | Pebble Time Round | 3.6+ |
Apps that use smartstraps but run on incompatible platforms can use compile-time defines to provide alternative behavior in this case. Read {% guide_link best-practices/building-for-every-pebble %} for more information on supporting multiple platforms with differing capabilities.
Video Introduction
Watch the video below for a detailed introduction to the Smartstrap API by Brian Gomberg (Firmware team), given at the PebbleSF Meetup.