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Casio

Casio watch models that work with Gadgetbridge often have connection problems. In addition, due to the watch's operating logic, the data on the watch is overwritten with each reconnection.

With pull request #1377 an initial support has added for some Casio watches.

ECB-S100

Mostly supported
Mostly supportedMissing a few features, but it should be enough to cover essential daily tasks.
No-vendor pairInitial pair can be done in Gadgetbridge without needing the proprietary vendor app.
Extras
Protocol informationClick to see protocol information for this gadget.

device__casio_ecb-s100

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Added in pull request #4423.

GB-5600B

Mostly supported
Mostly supportedMissing a few features, but it should be enough to cover essential daily tasks.
No-vendor pairInitial pair can be done in Gadgetbridge without needing the proprietary vendor app.
Extras
Protocol informationClick to see protocol information for this gadget.

device__casio_gb-5600b

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The Casio GB-5600B, GB-6900B, GB-X6900B and STB-1000 watches are one of the first Casio models to be Bluetooth-enabled and the first Casio models to be supported by Gadgetbridge. Unfortunately, BLE communication within the watch itself is problematic, so your experience may vary.

Connection problems

Connecting to the watch sometimes takes more than one try. If you enable automatic BLE reconnect, the process might be automatic. When connecting for the first time, be sure to delete the existing pairing from both, the phone and the watch, before adding it to Gadgetbridge.

The very first connection, i.e. when pairing, does not provide any functionality. You have to manually disconnect and reconnect the watch to make it fully working. To be sure, disable and enable Bluetooth on the phone between the connection attempts in order to refresh the GATT characteristic cache.

Casio watches tend to lose connection from time to time, especially when using LTE data very heavily. While the automatic BLE reconnect included in Gadgetbridge sometimes works, it is often not fast enough to find the Casio watch, since it advertises only for about 8 seconds before turning Bluetooth off. There is a pull request #1416 to improve reconnection but has not yet been merged. This situation has improved significantly and the PR is abandoned.

Supported features by Gadgetbridge:

  • Notifications
  • Music Control
  • Phone Finder
  • Time synchronization
  • Alarm Configuration

Currently, the only adjustments to the watch are setting alarms and time synchronization. No further configuration is possible.

The watch seems to always require time synchronization on connecting. Thus, the respective option in Gadgetbridge's settings has no effect for Casio models, the time is always synchronized when requested by the watch.

GB-6900B

Mostly supported
Mostly supportedMissing a few features, but it should be enough to cover essential daily tasks.
No-vendor pairInitial pair can be done in Gadgetbridge without needing the proprietary vendor app.
Extras
Protocol informationClick to see protocol information for this gadget.

device__casio_gb-6900b

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Given details under GB-5600B also apply to this gadget.

GB-X6900B

Mostly supported
Mostly supportedMissing a few features, but it should be enough to cover essential daily tasks.
No-vendor pairInitial pair can be done in Gadgetbridge without needing the proprietary vendor app.
Extras
Protocol informationClick to see protocol information for this gadget.

device__casio_gb-x6900b

has_flag__feature_most

has_flag__pair_free

has_flag__protocol

Given details under GB-5600B also apply to this gadget.

STB-1000

Mostly supported
Mostly supportedMissing a few features, but it should be enough to cover essential daily tasks.
No-vendor pairInitial pair can be done in Gadgetbridge without needing the proprietary vendor app.
Extras
Protocol informationClick to see protocol information for this gadget.

device__casio_stb-1000

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has_flag__pair_free

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Given details under GB-5600B also apply to this gadget.

Additionally, control mode is active directly after connection has been established. In order to leave this mode, long-press the "MODE" button on the watch.

GBX-100

Mostly supported
Mostly supportedMissing a few features, but it should be enough to cover essential daily tasks.
No-vendor pairInitial pair can be done in Gadgetbridge without needing the proprietary vendor app.
Extras
Protocol informationClick to see protocol information for this gadget.

device__casio_gbx-100

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The Casio GBX-100, GBD-200 and GBD-H1000 are the second Casio watch generation supported by Gadgetbridge. Please keep in mind that, due to its recent addition, not all features are available.

Make sure the delete the pairing information from the watch and the phone. If you have the Casio app installed, uninstall it before using Gadgetbridge. During the pairing process, the information stored in Gadgetbridge (your profile) is transferred to the watch and the information on the watch is overwritten. Also, the time is synchronized to the watch - this cannot be disabled and is a limitation of Casio's pairing protocol. Since Gadgetbridge only stored the year of birth, day and month are set to January 1. This is the only information that you can safely change on the watch without being overwritten by Gadgetbridge.

Supported features by Gadgetbridge:

  • Profile Synchronization
  • Setting step count and energy target (calculated based on the profile information)
  • Notifications
  • Phone finder

Currently work in progress:

  • Step Counter

Low Priority:

  • Exercise Data
  • Heart rate Data (GBD-H1000 only)
  • GPS Data (GBD-H1000 only)

No Priority:

  • Tide Data (GBX-100 only)
  • Sunset/Sunrise Data
  • World Time

The synchronization is set up in the "Gadgetbridge-always-wins"-style. This means that all information changed on the watch will be overwritten by Gadgetbridge upon the next reconnect.

The units are currently not synchronized. Other units than metric units have not been tried, although this part of the protocol is fully understood.

GBD-100

Mostly supported
Mostly supportedMissing a few features, but it should be enough to cover essential daily tasks.
No-vendor pairInitial pair can be done in Gadgetbridge without needing the proprietary vendor app.
ExperimentalAs we don't have that device it is not known if it works correctly. You can help us by testing yourself!
Extras
Protocol informationClick to see protocol information for this gadget.

device__casio_gbd-100

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Support for this device is untested. Given details under GBD-200 also apply to this gadget.

GBD-200

Mostly supported
Mostly supportedMissing a few features, but it should be enough to cover essential daily tasks.
No-vendor pairInitial pair can be done in Gadgetbridge without needing the proprietary vendor app.
Extras
Protocol informationClick to see protocol information for this gadget.

device__casio_gbd-200

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has_flag__pair_free

has_flag__protocol

Given details under GBX-100 also apply to this gadget.

GBD-H1000

Mostly supported
Mostly supportedMissing a few features, but it should be enough to cover essential daily tasks.
No-vendor pairInitial pair can be done in Gadgetbridge without needing the proprietary vendor app.
Extras
Protocol informationClick to see protocol information for this gadget.

device__casio_gbd-h1000

has_flag__feature_most

has_flag__pair_free

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Given details under GBX-100 also apply to this gadget.

GW-B5600

Mostly supported
Mostly supportedMissing a few features, but it should be enough to cover essential daily tasks.
No-vendor pairInitial pair can be done in Gadgetbridge without needing the proprietary vendor app.
Extras
Protocol informationClick to see protocol information for this gadget.

device__casio_gw-b5600

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Initial support added with pull request #3218.

Supported features by Gadgetbridge:

  • Set time
  • Set home timezone
  • Set daylight saving rules
  • All watch settings
  • Alarms
  • Reminders
  • Find phone

Missing features:

  • Countdown Timer
  • World Clocks
  • Battery Status

GMW-B5000

Mostly supported
Mostly supportedMissing a few features, but it should be enough to cover essential daily tasks.
No-vendor pairInitial pair can be done in Gadgetbridge without needing the proprietary vendor app.
ExperimentalAs we don't have that device it is not known if it works correctly. You can help us by testing yourself!
Extras
Protocol informationClick to see protocol information for this gadget.

device__casio_gmw-b5000

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has_flag__pair_free

has_flag__experimental

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Initial support added with pull request #3218, but was not tested.