Medaka - Revision history

Dodoradio: Replace messy usb instructions with link to ayu page

2026-07-16T12:37:08Z

Replace messy usb instructions with link to ayu page

@@ Line 45: / Line 45: @@
 = Getting USB =
-USB is not exposed on the outside of these watches. Accessing USB requires some disassembly of the watch, but does not compromise water resistance.
+The body design is shared with Ayu. Follow guide for [[Koi/Ayu#Getting USB|Ayu: getting USB]].
 = 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.

2026-07-08T16:50:11Z

remove category and thumbnail, now provided by watches template

← Older revision		Revision as of 16:50, 8 July 2026
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	\|StatusHands=missing		\|StatusHands=missing
	}}		}}
	~~[[Category:watches]]~~

	Medaka (Casio Pro Trek Smart WSD-F21HR) is a humongous watch with a secondary, sunlight readable display. The current port is good enough for daily use, but GPS doesn't work. The watch requires disassembly to flash.		Medaka (Casio Pro Trek Smart WSD-F21HR) is a humongous watch with a secondary, sunlight readable display. The current port is good enough for daily use, but GPS doesn't work. The watch requires disassembly to flash.

	~~[[File:Medaka.png\|thumb]]~~

	This is not the Casio WSD-F20. That is a different watch, see [[Koi/Ayu]].		This is not the Casio WSD-F20. That is a different watch, see [[Koi/Ayu]].

2026-07-07T19:09:59Z

← Older revision		Revision as of 19:09, 7 July 2026
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	}}		}}
	[[Category:watches]]		[[Category:watches]]
	Medaka (Casio Pro Trek Smart WSD-F21HR) is a humongous watch with a secondary, sunlight readable display. The port is ~~currently in progress~~
			Medaka (Casio Pro Trek Smart WSD-F21HR) is a humongous watch with a secondary, sunlight readable display. The current port is good enough for daily use, but GPS doesn't work. The watch requires disassembly to flash.

	[[File:Medaka.png\|thumb]]		[[File:Medaka.png\|thumb]]

2026-07-07T12:48:57Z

← Older revision		Revision as of 12:48, 7 July 2026
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	Medaka shares most of its internals with [[kingyo]], and runs a modified kingyo kernel. At a low level, nearly everything is shared apart from the colour display panel (which is instead shared with koi/ayu), the secondary display and heartrate sensor (which are both unique). However, from a user's point of view, the two watches are nothing alike.		Medaka shares most of its internals with [[kingyo]], and runs a modified kingyo kernel. At a low level, nearly everything is shared apart from the colour display panel (which is instead shared with koi/ayu), the secondary display and heartrate sensor (which are both unique). However, from a user's point of view, the two watches are nothing alike.

	~~= Port status =~~
	~~In theory, the port is quite mature. The watch boots fine and can be used daily.~~

	The issue is that this watch needs a 64 bit kernel and a 32 bit userspace. The watch can't be run entirely in 64 bit mode because the android hardware binaries are 32 bit. This sort of multiarch system is not easily supported by openembedded/bitbake. Currently the watch has to be built as two separate machines, with the second one building only the boot image. This also requires several hacks on top of the current build system to get working, and it's not likely to be merged in this state.

	= Second Display =		= Second Display =

2026-07-06T20:09:56Z

This watch is now supported!

2026-06-25T19:43:16Z

undo watchbox experiment

2024-12-11T13:44:35Z

test infobox

2023-10-13T11:07:27Z

add medaka image

← Older revision		Revision as of 11:07, 13 October 2023
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	[[Category:watches]]		[[Category:watches]]
	Medaka (Casio Pro Trek Smart WSD-F21HR) is a humongous watch with a secondary, sunlight readable display. The port is currently in progress		Medaka (Casio Pro Trek Smart WSD-F21HR) is a humongous watch with a secondary, sunlight readable display. The port is currently in progress

			[[File:Medaka.png\|thumb]]

	This is not the Casio WSD-F20. That is a different watch, see [[Koi/Ayu]].		This is not the Casio WSD-F20. That is a different watch, see [[Koi/Ayu]].

2023-10-13T11:06:55Z

Repair: add some info about the common back panel failure

← Older revision		Revision as of 11:06, 13 October 2023
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	= 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.

			Over time, it's common for these watches to develop horizontal cracks around the heartrate sensor. While this isn't a structural issue (the back panel is a layer of plastic over a metal internal frame) it may compromise water resistance. This seems to naturally happen because of some internal stresses in the plastic.

	= Miscellaneous hardware docs =		= Miscellaneous hardware docs =

2023-10-12T22:15:48Z

add a photo of the segment LCD

← Older revision		Revision as of 22:15, 12 October 2023
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	= Second Display =		= Second Display =
	The second display has 6 7-segment digits in the center, 6 7-segment digits at the bottom, a 23x5 pixel matrix at the top, two separator lines above and below the central large digits, a heartrate zone indicator on the ~~top~~ left and a smattering of icons and text indicators everywhere else.		[[File:Medaka-segment.jpg\|thumb]]
			The second display has 6 7-segment digits in the center, 6 7-segment digits at the bottom, a 23x5 pixel matrix at the top, two separator lines above and below the central large digits, a heartrate zone indicator curving around the left and a smattering of icons and text indicators everywhere else.

	= Getting USB =		= Getting USB =