For programming the WS2812B LEDs, the following libraries are used:

• FastLED

11/1/2024 (Truong)

TXS0108E - Logic Level Shifter

Used for 3.3V-5V level shifting for NRZ data to LEDs. Reference Datasheet: TXS0108E

• For schematic layout, looked into necessary external components for proper use.
• OE# pin needs to be tied to ground using pull-down resistor.

11/5/2024 (Truong)

LED Array Programming

• In total, 6 separate LED arrays need to be controlled by the ESP32
• 4 of these arrays are used to display the numbers on the digital clock.
• 1 of these arrays are used to display current mode when clicking the mode button
• 1 of these arrays are used for the lamp lighting

Custom Functions

• Using FastLED with custom functions as a wrapper will help with reducing the amount of code needed for a specific action.
• Action 1: Write a number to a 7-segment display
• Action 2: Select mode of clock on 2-segment display
• Action 3: Single-color lighting for lamp section
• (Opt) Action 4: Wait animations for WIFI connecting

11/16/2024 (Truong)

Using Hue-Saturation-Value for color

• FastLED provides both RGB and HSV color spectrums for addressing LEDs.
• For the use of individual LED arrays (total of 6), adjusting the brightness of an LED using value is much faster

Custom Function: convert hours and mins for 7 segment

• Using division and modulo, the hour and minute can be split into its places (in 10s and 1s).
• This data is then sent to a helper function that sets each LED based on the selected digit and number provided.

Custom Function: set auxiliary LEDs

• Due to the different manner of the configuration of setting up the 7-segment vs the mode/lamp LEDs, the function that housed both parts has now split into 2.