Most recent activity
-
If you don't have other load just the Pixl and an INA226, it can run several seconds on a relatively small supercap. Bought a 5.5V / 0.something Farad one ages ago, and that can store enough energy to run the Pixl with LCD backlight on for seconds.
Or modify your Pixl.js to use CR2032 battery as backup:
CR2032 battery backup - the CR2032 can be used as a backup when Vin/USB power is not present. Cut the trace in the solder jumper below the CR2032 holder, and add a surface mount diode to the two pads to the right of it.
So it could even run autonomously on the CR2032 after power loss. Altho 2.7V is the lower limit of the INA226, so that might not work reliably if your battery is low...I think on your schematic the Din would stay floating around 3.3V, if
+LiPowas disconnected.
If the INA226 doesn't work reliably on battery, I think a simple voltage divider + comparator in the Pixl would be enough. Check then NRF52LL on how to use the comparator. -
- 3 comments
- 283 views
-
Yes, have to fully erase the flash.
Btw: Tried to dig into this, but I have no idea how to fix. -
Joined the impatient group, so there is one early bird available, if anyone wants it :)
-
@Gordon the hardware specs on the kickstarter says
- Nordic 1.3 inch 240x240 16 bit LCD display with 2 zone touch
Nordic does LCDs as well? :)
- Nordic 1.3 inch 240x240 16 bit LCD display with 2 zone touch
-
And tensorflow micro? (not lite, something smaller than lite?)
And apps:
https://banglejs.com/apps/
https://github.com/espruino/BangleApps
aaand why I don't have one right now?😍 -
Yes, removing power from it resets the clock.
If you keep the Puck powered, it will remember the time. And will last a long time on battery.
Or you can use an external RTC with it's own battery, and read time from the RTC on startup.
Or you can set the time with setTime when you connect to it. You can do it automatically with some coding, if you connect to it with BLE from your computer of phone. -
In the meantime, you can figure out some details about it, if you take a look at the commits :)
Gps antenna maybe?