Cases and hardware mods for Watchy
Cases are located under CAD>Cases. Each case design has the STLs under an STLs subfolder and STEP (AP214) files under the STEP folder.
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Slim: This is the original case from SQFMI's watchy-cases. Had some errors slicing the file, hence rebuilt it as Slim V2
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Slim V2: Insipred by the
Slimcase, designed for use with 24mm NATO straps. -
Slim V3: Designed for a Watchy with the watch strap loops cut off from the PCB. Similar to Slim V2, designed for 24mm NATO straps.
I tried my hand at some discreet buttons on this, but they didn't work that well. So, there aren't any buttons on this version. I suggest you use the top case of Slim V4 which has integrated buttons.
- Slim V4: Similar to V3 , but tabs are changed to fit the spring pin -style straps of the Watchy starter kit (24mm). This lowers the height of Watchy significantly.
In v4, I made the display window a little larger, for use with the border colour changing 'hack' on the Watchy Discord so that the screen looks a bit bigger/bezel looks a bit smaller. If you don't want to implement the colour changing border, make the display window a little smaller (26.8mm instead of 28.4mm) otherwise there will be a white border around your display.
Slim V3 and Slim V4 don't have any fastening mechanisms in place; they are currently held together by friction, and a bit of double-sided tape. I find that it works well (it's pretty difficult to take the PCB out of the case, but use at your own risk). I find that the double sided tape loses it's adhesion after sticking and removing it a few times, so it's a good idea to put a fresh piece of tape every few times you take it apart.
The Slim V3 and V4 may or may not close fully if you have the stock battery cable. I shortened mine so there is less wire taking up space in the case. See below for details. It allows the case to be 1mm thinner. If you don't want to cut the battery wires, you can just make the case 1mm deeper :P
These cases were designed on Autodesk Inventor. The raw files are included in case you'd like to modify them.
Slim V3 and V4 parts are interchangeable (top and bottom).
Also, tolerances may vary based on 3d printer.
- Clipping mechanism to make the case more secure
(Guide may be coming soon)
- Cut the wires.
- Cut off excess.
- Slip on some heatshrink.
- Solder the wires back.
- Heatshrink.
It's a good idea to do each wire separately so there's no chance that the + and - wires will ever touch.
(coming soon too hopefully hehe) The plan: integrate this touchscreen with Watchy. Is currently shipping. Will update progress soon.
Idea is to connect the charging controller to the ESP32's GPIO and set an interrupt so it knows when it's charging. Fundamentally this is problematic - Watchy may never be able to wake from sleep upon connecting a charger.
Explanation: the charging IC pulls pin 1 low when charger is connected. ESP32 can only have one GPIO pin configured (at a time) to wake it from sleep when the pin goes low (using ext0). Currently that is connected to the RTC (removing that means Watchy stops being a watch). An alternative is to use an inverter, but...that's a lot of work. So this mod may not happen. At least not the wake from deep sleep part