Current status: Prototype ordered!
So called "smart" watches are a dime a dozen, but what does a hacker really need?
- 240x240 SPI IPS
- ST7789V controller integrated RAM and 12/16/18 bit colour
- 14 bit 2 MSPS Dual-Channel, Differential/Single-Ended ULP ADC
- 16 bit IO expander
- 6-axis MEMS IMU
- SAO connector
- USB to serial
- 4x SK6812MINI
- Bright white LED
- Up / Down / Center switch
- Li-Ion charger chip
- HE Single Inductor Buck-Boost Converter 1.8 A
- Power on / off
. . and much more :)
Choose bit depth(s)
It seems the display supports a low power 8 color mode, with no backlight that might just be enough for low power watch app . .
Choose UI kit
Since we only have UP, DOWN and CENTER we'll at-least need something like long press for Cancel / Back . .
This is the easiest of the following . .
High speed magic needed
There seem to be a couple of "flavours" of this, some with very nicely commented code