I need help.

[djksm]

For my application to Appamattox Governer School in Virginia, I need to make a project that people use in their daily lifes. Im making a smart thermostat using a raspberry pi. It will have a screen but i want the screen to switch to a mirror once i make a selection. Is there any screens that can do this? Google nest can.

[kitnoman]

Are there panel, like these? Probably yes, check aliexpress or alibaba. But the fastest would be by making your own. You just need to use a regular panel and two-way mirror(one-way mirror same thing). Goggle DIY smart mirror. But instead of the actual acrylic, just use two/one way mirror film. So instead of a full size tv, you can try to use a smaller panel. If this is not the one you are looking for, then my apology. But good luck on your application!

[FlyingPotato_is_taken]

What if I tell you that the magic trick isn't the screen?

Look it up. this is your homework.

[djksm]

7 hours ago, FlyingPotato_is_taken said:

What if I tell you that the magic trick isn't the screen?

Look it up. this is your homework.

i know it isnt

i want to make it look good

[FlyingPotato_is_taken]

So you know it's mirror foils?

I don't have a uv-vis at the moment to measure it but:

1. they take out approx. 60% of the brightness -> use a bright LCD!

2. not all wavelengths are equally attenuated/blocked -> design the code in such away that you can load a simple calibration list/array. Nobody cares that you don't have access to a spectrometer to measure it. What counts is that you are aware of this and implemented a solution.

 

Btw. There are two versions of mirror foils:

1. outside of the window/outdoor

2. inside of the window

 

These details probably won't be noteworthy for the project.

 

 

Hardware for a quick and dirty prototype?

https://github.com/scottbez1/smartknob (roughly $30 in China)

Or buy one of those ESP32 or RP2040 round display devboards.

 

Good luck. Hope you succeed developing the firmware.

[djksm]

14 minutes ago, FlyingPotato_is_taken said:

So you know it's mirror foils?

I don't have a uv-vis at the moment to measure it but:

1. they take out approx. 60% of the brightness -> use a bright LCD!

2. not all wavelengths are equally attenuated/blocked -> design the code in such away that you can load a simple calibration list/array. Nobody cares that you don't have access to a spectrometer to measure it. What counts is that you are aware of this and implemented a solution.

 

Btw. There are two versions of mirror foils:

1. outside of the window/outdoor

2. inside of the window

 

These details probably won't be noteworthy for the project.

 

 

Hardware for a quick and dirty prototype?

https://github.com/scottbez1/smartknob (roughly $30 in China)

Or buy one of those ESP32 or RP2040 round display devboards.

 

Good luck. Hope you succeed developing the firmware.

thank you!