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11 digital I/O + 1 analog: Same GPIO count as NodeMCU
just make sure your battery can handle it
The onboard 3
ESP8266 WiFi onboard: 802
DFRobot MQ-8 Hydrogen Gas Sensor Gravity - SEN0133 arduino mega 11 digital I/O + 1Detect Gas Changes with a Practical Air Sensor The Hydrogen Gas Analog Sensor MQ8 For Arduino Gravity is a gas sensor with analog output designed for air quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds. Key details include Power supply needs: 5V; Interface type: Analog; Size: 40x20mm(1. 57"x0. 79"). Important: Most gas and chemical
US$ 39.95
US$ 99.95
US$ 15.00
