What is the technology behind the LCD touch buttons?
I noticed that sometimes they are activated with false positive, assume high temperate changes becuase i open the fridge and it activate. Just curious what is driving them?
Bangle.js: Opening and re-assembling
In this video i notice 4 connections coming out of the display, does that mean it has 4 touch locations?
What is the advantage to having only 2 touch spots on the display, compared to entire screen being touch? Less software operation ? Or when they only want to detect swipe action?
Is the 2 touch feature a hardware limitation or a software/design limitation?
Found this at 1:30 you see something which might be very similar?
Capacitive Sensing, think its this
As far as I can tell the display is 4 areas, but because of the limits of the touch chip they use, they are connected together into just 2 areas. I think the limit is probably because of a lack of IO on the microcontroller.
I think the actual controller is the Holtek BS83A02A - link to datasheet on https://www.espruino.com/Bangle.js+Technical#hardware
Honestly, I'm not sure about what could be causing the accidental triggering - but as far as I can tell the touch controller automatically calibrates, so if the capacitance around it changes suddenly it might trigger.
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