Update on progress in cutting up the back of the heart to accommodate my electronics.
This was where we left off on Saturday, with one hole for one of the buttons. Since then, I've confirmed the placements for my LEDs, and started carving holes for the other buttons accordingly.
The first hole I cut will hereafter be referred to as "Button B". The holes for buttons A and C were relatively straightforward. Not too deep and not too shallow, with a slight ridge at the edge to hold the buttons in place. Button B's spot is a little shallow still, will need to find other ways to secure it. Button C's hole was cut a little bit too close to the surface, and there's a slight tear that I hope isn't too obvious when the button is pressed.
I used tweezers and an Exacto knife to slowly cut the silicone. For Button D, it was quite challenging to cut the hole close enough to the surface that the button could be pressed, since it was positioned at a very thick spot of the heart.
LED D and therefore Button D placed at a very thick part of the heart.
Current button placements/depths.
Also started cutting a spot for the touch sensor, that had to be relatively close to the surface. Trying to strike a balance between keeping the sensor wedged into place with the silicone, without having the sensor be activated all the time. Need to check how exactly capacitive touch sensors work, and how not to trigger them.
Yet to find a place to insert the MPU 9250 sensor, might end up ditching it so that users don't need to pick up the heart, since there's a risk of wires coming loose. For now though, I added a bit of heat-shrink insulator (? not sure about the exact term) on the outer surface in case any errant wires/conductive materials short it out.
Next posts to write - What are capacitive sensors anyway? Also electronics wiring map.
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