Blueprint

The fabrication blueprint.

Parts, dimensions, wiring and the six assembly steps. Gated to the founder of venture D25BG41.

Founder id

Preview

350 x 350 x 300 mm1200 g, folds to 40 mm±1 mm frame, ±0.5 °C

Bill of materials

  • Adafruit VL53L4CX time-of-flight sensor (product 5425) x1
  • Würth Elektronik 5 V 40 mm axial fan (part 4142) x1
  • TE Connectivity PTC heater 50 W 12 V (part 1-1423151-0) x1
  • Adafruit Feather ESP32 V2 (product 5400) x1
  • Maxim DS18B20 temperature sensor (DS18B20+) x1
  • Mean Well 12 V 2 A desktop supply (GST25A12-P1J) x1
  • 3 mm birch plywood panels, #E8D5B7 laminate x6
  • Magnetic folding hinges (DigiKey 3M 1-5-9495B) x8
  • Silicone water tray 200 x 200 mm x1

Wiring: ESP32 on I2C to the VL53L4CX, DS18B20 on OneWire, GPIO 25 fan via MOSFET, GPIO 26 heater via relay, 12 V barrel jack to a 5 V regulator.