E-ink Desk Clock – WeAct 2.9" + ESP32-C3 SuperMini, Touch Buttons, No Screws

A slim desk clock / info panel for the WeAct Studio 2.9" e-paper module (296×128, B/W or B/W/Red),

driven by an ESP32-C3 SuperMini. Inspired by Echo Show style wedges, but thinner and simpler:

104 × 34 × 56 mm.

### Features

- Display tilted back 15° for easy reading, framed by a chamfered window sized to the active area (68 × 30 mm)

- Two invisible touch buttons: TTP223 modules glued under the top, sensing through 1.2 mm of PLA

(small dimples mark where to touch)

- BMP280 temperature/pressure sensor on slide-in rails in the lower left side, far from the ESP32's heat,

with fresh air through the Voronoi pattern (a BME280 fits too, for humidity)

- ESP32-C3 SuperMini sits in a floor recess on foam tape; USB-C exits through the right side

- Screwless back cover: bottom tab + two snap clips (removable, a small notch on top lets you pry it open)

- Voronoi pattern on the sides and back cover (also works as ventilation)

- Prints without supports: body face-down (smooth front from the bed texture), cover flat

### Hardware

- WeAct Studio 2.9" e-paper module (PCB 91.6 × 37.2 mm, Ø3 mm holes)

- ESP32-C3 SuperMini (22 × 17 mm)

- 2× TTP223 touch module (14 × 11 mm)

- 1× BMP280 module (~10 × 10 mm) — optional

- Double-sided foam tape, wires (no headers needed)

- Optional: 4 rubber feet ≤ 9 mm (recesses included)

### Assembly

1. Place the display from the inside, glass against the window, FPC ribbon on the left (seen from the front).

The 4 pins go through the PCB holes; fix them with a drop of glue or melt the tips with a soldering iron.

2. Stick each TTP223 pad-side up into its pocket under the top.

3. ESP32-C3: foam tape inside the floor recess, USB-C facing the side opening.

4. Slide the BMP280 along its rails from the back until it stops (pins facing back).

5. Insert the cover's bottom tab into the floor slot, swing it up and snap it in.

The enclosure is fully parametric (Python + CadQuery): display, board, button and sensor sizes,

Voronoi pattern, wall thickness, clips… are all variables.