RGB leds arranged to simulate the look of a 7 segment display.
Raspberry Pi & ESP32 based controllers.
ESP32 version features: realtime clock, syncs to a network time server, supports various time display animations.
All PCBs in KiCAD.
Raspberry Pi version features: all ESP32 features plus: 3.5mm audio jack and 5V relay controlled power output (for alarm audio), python library for controlling display & alarm functionality (in-progress).
Motivation: I wanted an alarm that syncs with my various calendars (google, protonmail, etc) capable of 'smart' functionality like adjusting alarm time based on calendar events & traffic conditions, etc., but wanted those calculations to happen locally (i.e. not google now/similar). Love the look of 7 segment displays but wanted a bit more control of the display.
Construction: PCBs for controllers (ESP32 based & Raspberry Pi cape), 7 segment digits are custom PCBs with APA102 addressable LEDs (3 per segment), daisy-chain-able. 3D Printed shrouds & laser cut acrylic diffuser front, all in a stylish wooden box. PCBs designed in KiCAD, 3D Modeling in AutoCAD & Fusion360.
