University of Pennsylvania, ESE 5190: Intro to Embedded Systems, Lab 1

Sai Koushik Samudrala Sambasastry
Tested on: Lenovo Legion 5i, Ubuntu 22.04

The color sensor identifies the color variations from the input and converts it to an equivalent representation from 0 to 1025 for each channel. (apds.color_integration_time) with a sampling time gap of 2.78 ms. This value is passed on to the onboard neopixel LED. The LED simulates the color changes from the firefly are reflected in the LED output.

##(KeyBoard_4.4 folder of repository)

The user adjusts the ambient brightness levels, which are identified by the photo-sensor, which transmits these values over the I2C interface via the stemma cable. The RP 2040 then compares the brightness levels and determines the keystrokes, which are passed to the computer via the USB-HID interface. These changes can then be observed on the text editor.

Link to GIF: https://github.com/koushik-sss/ese5190-2022-lab1-firefly-sai/raw/main/GIFs/CustomVisualizer.gif

The illumination on the photo-sensor of the APDS9960 board is mapped against the X-Axis movement of the mouse. If the illumination around the sensor is bright, the cursor moves towards the right by 2 units per signal. Similarly, if it is dark, the mouse cursor moves towards the left by 2 units per signal.

Link to GIF: https://github.com/koushik-sss/ese5190-2022-lab1-firefly-sai/raw/main/GIFs/MouseController.gif