CO2 display

Assembled in a printed enclosure, USB-C powered, delivered to Germany. Change parts

Parts

Arduino Nano ESP32ABX00083
Arduino Nano Connector CarrierASX00061
Cables, standoffs, M3 screws
SCD41 CO2 sensor (also temperature and humidity)Adafruit 5190
1.3" OLED display, 128×64, monochromeAdafruit 938

Price

Parts	€105.12
Enclosure	€20.00
Assembly and test	€30.00
Shipping	€6.00
Protoship fee	€24.17
VAT 19 %	€35.21
Estimated total	€220.50

Estimated from list prices. The final total is confirmed before you order; a reservation never obliges you to buy. About 8 to 12 working days after the order.

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ESPHome starter config

esphome:
  name: protoship-device
esp32:
  board: arduino_nano_esp32
  framework:
    type: esp-idf
logger:
api:
  encryption:
    key: !secret api_key
ota:
  - platform: esphome
    encryption:
      key: !secret ota_key
wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  ap: {}  # fallback hotspot if Wi-Fi fails
captive_portal:
i2c:  # Qwiic plug of the carrier
  sda: GPIO11
  scl: GPIO12
sensor:
  - platform: scd4x
    co2:
      name: CO2
      id: co2
    temperature:
      name: SCD41 temperature
    humidity:
      name: SCD41 humidity
font:
  - file: "gfonts://Roboto"
    id: font_main
    size: 14
display:
  - platform: ssd1306_i2c
    model: "SSD1306 128x64"
    address: 0x3D
    lambda: |-
      it.printf(0, 0, id(font_main), "%.0f ppm CO2", id(co2).state);