raspberry-kiosk

React app and customization scripts to make a Media/eBook device from a RPi

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Instructions:

Disclaimer:

Run the installer on the rpi file, then use your custom keyboard to navigate as detailed on the hardware seccion

This project uses push buttons connected to the RPi GPIO to navigate throug the application.

RPI_GPIO	KEY	LINUX_CODE	ACTION
4	W	17	UP
17	S	31	DOWN
27	A	30	LEFT
22	D	32	RIGHT
23	O	24	BACK
25	P	25	ENTER

To map GPIO inputs to keystrokes, you have to modify this file

breadboards.dts

Then, compile and paste it with this command

sudo dtc -I dts -O dtb -o /boot/overlays/breadboard.dtbo breadboard.dts

If you are powering your device with bateries you can add the power meter feature with an ADC.

We are using a ADS1115 module with the fo9llowing connections

We will use this table as reference

We used https://mycurvefit.com/ ()to apply a curve fiting algoritm to obtain the following formula

y = 122.3852 + (0.07531401 - 122.3852)/(1 + (x/3.681646)^129.1279)^0.09606746

where x is the voltage obtained and y the calculated percentage, on python code it should look like:

y = 122.3852 + (0.07531401 - 122.3852)/(1 + (x/3.681646)**129.1279)**0.09606746

In order to Update the media displayed on the device, you should take the following steps:

Get a pendrive and create a folder with the name update.
Inside the update folder insert the build folder attached.
The build folder should contain the media you want to display on its respetive folder. For instance, pdf files should be on pdf folder, video files on vid and so on.
Insert the pendrive on the RPi, and reboot it. When the RPI boots, looks for the update folder and copies the files into its SD card.