Home assistants are cool, but somehow visually boring.
So I thought, why not just give my voice control a face and then display it as a "hologram".
The whole thing is based on the principle of retroprojection, so that an image can be created on the matt pane. It should also be low cost and with material that anyone can get or make.
Now Alexa and Co look like the 21st century :)
I experimented with some loupes and VR lenses, but was not satisfied with the results. So I tried epoxy resin. I managed (by accident) to make a lens with a focus point of a few mm. The first results with this lens are promising, even though it no longer covers the whole display and I can now only use 128x128 pixels. The distortion caused by this lens gives my hologram a special touch. I hope :)
I held the lens directly in front of the eye and the camera directly on the other side. And the picture is not bad.
First I develop the lighting for the LCD display. The display is an ST7735 chipset with a resolution of 128*160 pixels. I use a 3W led as the light source. It should be bright enough for my project and will not generate too much heat during continuous operation. I also need to make a pre-lens out of resin to focus the light onto the display.