// other
SCD30
True NDIR CO2 + temp + humidity
€45.00
avg eur
no image
I2C
Modbus
PWM
Pins
4
Specs
5
Libraries
2
Protocols
3
// wiring → esp32 devkit v1
VCC
3V3
EN
GPIO36
VP
GPIO39
VN
GPIO34
GPIO35
GPIO32
GPIO33
GPIO25
GPIO26
GPIO27
GPIO14
GPIO12
GND
GND
GPIO13
ESP32
WROOM-32
devkit v1
USB
VIN
5V
VCC
GND
GPIO23
GPIO22
SCL
SCL
GPIO1
TX0
GPIO3
RX0
GPIO21
SDA
SDA
GPIO19
MISO
GPIO18
SCK
GPIO5
SS
GPIO17
TX2
GPIO16
RX2
GPIO4
GPIO2
GPIO15
sensor pin (left)
sensor pin (right)
unused
// pinout → esp32
| Sensor Pin | ESP32 Connection |
|---|---|
| VCC | 3.3V or 5V |
| GND | GND |
| SCL | GPIO 22 |
| SDA | GPIO 21 |
// technical specs
CO2 range
400–10000 ppm
Accuracy
±30 ppm + 3%
Temp
±0.4°C
I2C addr
0x61
Voltage
3.3–5V
// github libraries
// notes & warnings
Pulls ~75mA peak. Use I2C clock stretching tolerant pins. Slow refresh (2s).
// related sensors · other