LIVE INSTRUMENT / GAS SIGNAL

MQ-9 signal monitor

A full-rate view of the sensor board, streamed over Bluetooth at 200 samples per second.

LINK STATUSSensor is offline

CURRENT INPUT

GPIO 0 input

Waiting for sensor

—mV

NORMALIZED LEVEL—

EST. MODULE AO—

400 mV1800 mV

GPIO 0 must stay below 3,300 mV. Firmware clamps the reported number only; the required 15 kΩ / 10 kΩ divider provides the electrical protection.

FULL-RATE HISTORY

DEVICE SETTINGS

REV 0

Baseline mVClean-air reference levelAlert threshold mVRed begins at this level

Connect to read settings from the sensor.