DFRobot Beginner Kit for Arduino (Best Starter Kit) $39.90. LattePanda Delta 432 – Tiny Ultimate Windows / Linux Device 4GB/32GB. $208.00. Devastator Tank Mobile Robot Platform (Metal DC Gear Motor) $84.90. micro:Maqueen Plus - an Advanced STEM Education Robot for micro:bit. $49.90. Solar Power Manager 5V.
Grove - Gas Sensor (MQ9) The Grove - Gas Sensor (MQ9) module is useful for gas leakage detection (in home and industry). It is suitable for detecting LPG, CO, CH4. Due to its high sensitivity and fast response time, measurements can be taken as soon as possible. The sensitivity of the sensor can be adjusted by using the potentiometer.