Koi/Ayu - Revision history

Dodoradio: /* Miscellaneous hardware docs */

2026-07-16T13:02:33Z

Miscellaneous hardware docs

← Older revision		Revision as of 13:02, 16 July 2026
Line 115:		Line 115:
	=== Manually getting to fastboot ===		=== Manually getting to fastboot ===
	Hold the top key while powering on the watch. Navigate the menu using the top key and select using the power button.		Hold the top key while powering on the watch. Navigate the menu using the top key and select using the power button.

			=== Screen protectors ===
			A 36mm screen protector will perfectly fit within the bezel on Ayu

	=== Segment Display ===		=== Segment Display ===

Dodoradio: clear up headings

2026-07-16T12:49:40Z

clear up headings

← Older revision		Revision as of 12:49, 16 July 2026
Line 39:		Line 39:
	This is not the Casio WSD-F21HR. That is a different watch, see [[medaka]].		This is not the Casio WSD-F21HR. That is a different watch, see [[medaka]].

	= Description =		== Description ==
	Koi is Casio's first WearOS watch. It is huge. The WSD-F10 was the first watch to introduce a dual-layer display, which was then made popular by [[catfish]]. Ayu is the successor to koi and added GPS. Both watches have flat tyres at the bottom of their round displays, as well as charging indicator lights next to their magnetic charging connectors. While koi and ayu's straps mount in the same way, their different shape means that koi and ayu's straps aren't intercompatible. Make sure you buy the correct straps for your watch.		Koi is Casio's first WearOS watch. It is huge. The WSD-F10 was the first watch to introduce a dual-layer display, which was then made popular by [[catfish]]. Ayu is the successor to koi and added GPS. Both watches have flat tyres at the bottom of their round displays, as well as charging indicator lights next to their magnetic charging connectors. While koi and ayu's straps mount in the same way, their different shape means that koi and ayu's straps aren't intercompatible. Make sure you buy the correct straps for your watch.

	== koi ==		=== koi ===
	Koi is a large watch with a single piece bezel. The front has labels for the 'tool' and 'app' buttons and a 'sensor' label next to the pressure sensor port.		Koi is a large watch with a single piece bezel. The front has labels for the 'tool' and 'app' buttons and a 'sensor' label next to the pressure sensor port.

	== ayu ==		=== ayu ===
	Ayu's main differentiator is the addition of GPS, but the watch is also redesigned to be more in line with Casio's Pro Trek brand. The bezel is covered in text, on top of the text present on koi.		Ayu's main differentiator is the addition of GPS, but the watch is also redesigned to be more in line with Casio's Pro Trek brand. The bezel is covered in text, on top of the text present on koi.

Dodoradio: clear up headings

2026-07-16T12:48:35Z

clear up headings

← Older revision		Revision as of 12:48, 16 July 2026
Line 62:		Line 62:
	If you see a strange fuzzy or cracked look around the flat tyre, that is the display delaminating. This will cause the touch digitiser to fail. The watch is still usable, but you won't be able to tap the entire screen. Don't buy any watch where you can see this happening.		If you see a strange fuzzy or cracked look around the flat tyre, that is the display delaminating. This will cause the touch digitiser to fail. The watch is still usable, but you won't be able to tap the entire screen. Don't buy any watch where you can see this happening.

	= Getting USB =		== Getting USB ==
	You can find a 3D printable dock to attach pogo-pins onto the hidden USB pads here:		You can find a 3D printable dock to attach pogo-pins onto the hidden USB pads here:

Line 68:		Line 68:

	The procedure to reveal those USB Pads is described below.		The procedure to reveal those USB Pads is described below.
	== ayu ==
			=== ayu ===
	[[File:Ayu-medaka-usb-pads.jpg\|alt=USB pads on ayu\|thumb\|USB pads on ayu]]		[[File:Ayu-medaka-usb-pads.jpg\|alt=USB pads on ayu\|thumb\|USB pads on ayu]]
	USB is not exposed on the outside of these watches. Accessing USB requires some disassembly of the watch, but does not compromise water resistance.		USB is not exposed on the outside of these watches. Accessing USB requires some disassembly of the watch, but does not compromise water resistance.
Line 93:		Line 94:
	* Modify the Casio logo plate.		* Modify the Casio logo plate.
	*; This will allow you to access USB by only removing the top strap of your watch. This avoids the issue of the other two methods, but does involve some knife skills. TODO: Add pictures		*; This will allow you to access USB by only removing the top strap of your watch. This avoids the issue of the other two methods, but does involve some knife skills. TODO: Add pictures

	== koi ==		=== koi ===
	[[File:Koi USB pads.jpg\|alt=USB pad location on koi\|thumb\|USB pad location on koi]]		[[File:Koi USB pads.jpg\|alt=USB pad location on koi\|thumb\|USB pad location on koi]]
	The USB access procedure is similar to ayu with following differences:		The USB access procedure is similar to ayu with following differences:
Line 102:		Line 103:


	= Repair =
			== Repair ==
	The watches can be easily disassembled by removing 6 phillips screws on the back. The watch is sealed with a gasket, so water resistance is not compromised by disassembly. Replacement parts are available, but expensive.		The watches can be easily disassembled by removing 6 phillips screws on the back. The watch is sealed with a gasket, so water resistance is not compromised by disassembly. Replacement parts are available, but expensive.

	= Miscellaneous hardware docs =		== Miscellaneous hardware docs ==
	== Keys ==
			=== Keys ===
	The central key is the power button.		The central key is the power button.
	The top and bottom keys are volume up and down respectively.		The top and bottom keys are volume up and down respectively.
	== Manually getting to fastboot ==
			=== Manually getting to fastboot ===
	Hold the top key while powering on the watch. Navigate the menu using the top key and select using the power button.		Hold the top key while powering on the watch. Navigate the menu using the top key and select using the power button.

	== Segment Display ==		=== Segment Display ===
	Stacked on top of the colour LCD is a segment LCD. This generally shows the time, and saves power while being more readable in the sun.		Stacked on top of the colour LCD is a segment LCD. This generally shows the time, and saves power while being more readable in the sun.

	The second display has 5 16-segment digits in the center, 4 7-segment digits at the bottom, a battery icon in the bottom left, a 21x7 pixel matrix at the top and two separator lines above and below the central large digits.		The second display has 5 16-segment digits in the center, 4 7-segment digits at the bottom, a battery icon in the bottom left, a 21x7 pixel matrix at the top and two separator lines above and below the central large digits.

	=== Timekeeping ===		==== Timekeeping ====
	Whenever the colour LCD is not on, the monochrome LCD comes on. This shows Date and day of week in the dot matrix, hours and minutes in the middle and seconds at the bottom. The separator lines are not shown normally.		Whenever the colour LCD is not on, the monochrome LCD comes on. This shows Date and day of week in the dot matrix, hours and minutes in the middle and seconds at the bottom. The separator lines are not shown normally.

	=== 'Timepiece' mode ===		==== 'Timepiece' mode ====
	It is possible to power off the main system while the secondary LCD continues to show the time. When in this mode, pressing the power button quickly will cause the backlight to come on for a few seconds. The separator lines are shown when in timepiece mode.		It is possible to power off the main system while the secondary LCD continues to show the time. When in this mode, pressing the power button quickly will cause the backlight to come on for a few seconds. The separator lines are shown when in timepiece mode.

	=== Data display mode ===		==== Data display mode ====
	It is also possible to show arbitrary data on the dot matrix and central display. Under casio's software, this could show compass bearing, tide times, sunrise/sunset times, altitude (with altitude graph), air pressure (with air pressure graph) and calories burned.		It is also possible to show arbitrary data on the dot matrix and central display. Under casio's software, this could show compass bearing, tide times, sunrise/sunset times, altitude (with altitude graph), air pressure (with air pressure graph) and calories burned.
	* When displaying arbitrary data, the bottom section instead shows hours and minutes with a colon separator.		* When displaying arbitrary data, the bottom section instead shows hours and minutes with a colon separator.

Dodoradio: bricking issues: describe brick symptoms

2026-07-16T12:47:32Z

bricking issues: describe brick symptoms

← Older revision		Revision as of 12:47, 16 July 2026
Line 48:		Line 48:
	Ayu's main differentiator is the addition of GPS, but the watch is also redesigned to be more in line with Casio's Pro Trek brand. The bezel is covered in text, on top of the text present on koi.		Ayu's main differentiator is the addition of GPS, but the watch is also redesigned to be more in line with Casio's Pro Trek brand. The bezel is covered in text, on top of the text present on koi.

	= '''HARDWARE ISSUES''' =		== '''HARDWARE ISSUES''' ==
	These watches are expensive and problematic. Buyer Beware!!!		These watches are expensive and problematic. Buyer Beware!!!
	~~== BRICKING ISSUES ==~~
	Bugs in the original WearOS software can cause these watches to brick themselves. While they seem to be quite stable under AsteroidOS, it seems that messing with the bootloader and continuing to use WearOS can cause the watches to corrupt their own bootloader and bootloop forever. Our only advice is to flash with extreme caution and chat on matrix before doing so.

	== WearOS activation bug ==		=== BRICKING ISSUES ===
			Bugs in the original WearOS software can cause these watches to brick themselves. This presents as WearOS bootlooping, and the watch failing to enter fastboot. Don't buy any watch where you can't get into fastboot or recovery.

			While they seem to be quite stable under AsteroidOS, it seems that messing with the bootloader and then rebooting into WearOS can cause this brick. Our best advice is to flash with extreme caution and chat on matrix before doing so.

			=== WearOS activation bug ===
	Other bugs in WearOS can cause the watch to get stuck at the WearOS activation screen after a factory reset. If this happens to your device, you can still flash AsteroidOS and it ''should'' work fine.		Other bugs in WearOS can cause the watch to get stuck at the WearOS activation screen after a factory reset. If this happens to your device, you can still flash AsteroidOS and it ''should'' work fine.

	== Display delamination issues ==		=== Display delamination issues ===
	If you see a strange fuzzy or cracked look around the flat tyre, that is the display delaminating. This will cause the touch digitiser to fail. The watch is still usable, but you won't be able to tap the entire screen. Don't buy any watch where you can see this happening.		If you see a strange fuzzy or cracked look around the flat tyre, that is the display delaminating. This will cause the touch digitiser to fail. The watch is still usable, but you won't be able to tap the entire screen. Don't buy any watch where you can see this happening.

Dodoradio: remove category, now provided by watches template

2026-07-08T16:51:41Z

remove category, now provided by watches template

← Older revision		Revision as of 16:51, 8 July 2026
Line 32:		Line 32:
	\|StatusHands=missing		\|StatusHands=missing
	}}		}}
	~~[[Category:watches]]~~
	Koi (Casio Smart Outdoor Watch WSD-F10) and Ayu (Casio Pro Trek Smart WSD-F20) are a pair of humongous watches with secondary, sunlight readable displays. The WSD-F20 has GPS while the WSD-F10 does not. The ports are experimental because of [[ #BRICKING ISSUES \| bricking issues]].		Koi (Casio Smart Outdoor Watch WSD-F10) and Ayu (Casio Pro Trek Smart WSD-F20) are a pair of humongous watches with secondary, sunlight readable displays. The WSD-F20 has GPS while the WSD-F10 does not. The ports are experimental because of [[ #BRICKING ISSUES \| bricking issues]].
	----		----

Dodoradio: deprioritise 'second display' section

2026-07-06T20:07:41Z

deprioritise 'second display' section

@@ Line 48: / Line 48: @@
 == ayu ==
 Ayu's main differentiator is the addition of GPS, but the watch is also redesigned to be more in line with Casio's Pro Trek brand. The bezel is covered in text, on top of the text present on koi.
 = '''HARDWARE ISSUES''' =
@@ Line 127: / Line 109: @@
 == Manually getting to fastboot ==
 Hold the top key while powering on the watch. Navigate the menu using the top key and select using the power button.

Beroset: add ReleaseDate

2026-02-03T16:21:48Z

add ReleaseDate

← Older revision		Revision as of 16:21, 3 February 2026
Line 3:		Line 3:
	\|OtherNames=ayu		\|OtherNames=ayu
	\|Model=Casio WSD-F10/F20		\|Model=Casio WSD-F10/F20
			\|ReleaseDate=2016-03-25
	\|Picture=koi.png		\|Picture=koi.png
	\|Status=experimental		\|Status=experimental

Mosen: /* Getting USB */ Change 3D print dock link to printables

2024-07-17T20:48:12Z

Getting USB: Change 3D print dock link to printables

← Older revision		Revision as of 20:48, 17 July 2024
Line 78:		Line 78:

	= Getting USB =		= Getting USB =
	You can find a 3D printable dock to attach pogo-pins onto the hidden USB pads at https://www.~~thingiverse~~.com/~~thing:6189366~~		You can find a 3D printable dock to attach pogo-pins onto the hidden USB pads here:

			https://www.printables.com/model/609744-casio-wsd-fxx-series-developer-usb-dock

	The procedure to reveal those USB Pads is described below.		The procedure to reveal those USB Pads is described below.

Mosen: /* ayu */

2023-09-29T15:50:45Z

ayu

← Older revision		Revision as of 15:50, 29 September 2023
Line 88:		Line 88:
	*; <nowiki>To remove the straps:</nowiki>		*; <nowiki>To remove the straps:</nowiki>
	** Find the metal strap retention brackets at the base of the straps. Find the springbar pin which engages with the bracket.		** Find the metal strap retention brackets at the base of the straps. Find the springbar pin which engages with the bracket.
	** On one side of the bracket, use something thin to push in the springbar and pull that side of the bracket away.		** On one side of the bracket, use something thin to push in the springbar and pull that side of the bracket away. A SIM removal tool works great for this task.
	** Use a pair of tweezers to remove the spring bar		** Use a pair of tweezers to remove the spring bar
	** Hinge the strap outwards until you can remove it completely.		** Hinge the strap outwards until you can remove it completely.

Mosen: /* ayu */

2023-09-29T14:53:40Z

ayu

← Older revision		Revision as of 14:53, 29 September 2023
Line 111:		Line 111:
	The USB access procedure is similar to ayu with following differences:		The USB access procedure is similar to ayu with following differences:

	* Display Top Frame needs to be removed and can not be put back during making USB connection		* Display Top Frame needs to be removed by undoing the four tri-wing 2.3 screws and can not be put back during making USB connection
	* The USB pads are on a sightly different position closer to the center than on ayu and medaka		* The USB pads are on a sightly different position closer to the center than on ayu and medaka