1U Rack Sensor + ESPHome - temperature & humidity + smoke sensor + buzzer
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1U Rack mounted temperature & humidity sensor + smoke sensor & buzzer. Uses ESPHome to send data to HomeAssistant.
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1U Rack mounted temperature & humidity sensor + smoke sensor & buzzer. Uses ESPHome to send data to HomeAssistant, but can work also without a network.
Mounted to the right side rail. Needs right angled micro usb cord to power, straight ones do not seat properly with rack rail.
Shows name ("Rack Sensor" - easily changed in rack-sensor-smoke-english.yaml file), time, temperature & humidity and connection with HomeAssistant:
- "((o))" for connected
- "I" for not connected
If temperature or humidity lacks digit set GHT22 less frequent refresh rate.
Shows "Error" if it's not getting data from the DHT22 sensor.
Shows Air quality. Once reaches 60% error “SMOKE!” and buzzer alarm activates.
Needs:
- DHT22 temperature & humidity sensor
- MQ-2 smoke sensor
- Buzzer
- ESP-WROOM-32 with WiFi (micro USB port)
- OLED 1,3″ 128x64px I2C (4pin)
- About 50g of filament
- 6 screws
Connection guide for dummies:
- Inside there is enough space to use female-female connection wires, no need to solder to any of the components! (as long they have male pins connectors)
- Connect ESP32 3.3V pin to OLED VCC pin AND DHT22 VCC pin AND MQ-2 VCC pin
- ConnectESP32 GND pin to DHT GND pin AND OLED GND pin AND Buzzer “-” pin
- Connect DHT22 Data pin to ESP32 pin21
- Connect MQ-2 Data pin to ESP32 pin34
- Connect Buzzer “+” pin to ESP32 pin12
- Connect OLED SDA pin to ESP32 pin18
- Connect OLED SCL pin to ESP32 pin19