HM-10 Bluetooth Module - AT-09 Bluetooth 4.0 UART Transceiver Module CC2541 [C] Transistors A Schmitt trigger is also

A Schmitt trigger is also useful for debouncing a push button or other noisy input devices

The Rain Drop Sensor Module can be powered with +5V and has both digital and analog output pins

MQ9 Gas Sensor is a Metal Oxide Semiconductor (MOS) type Gas Sensor of MQ Gas Sensors family involving MQ 2

and even 20V

HM-10 Bluetooth Module - AT-09 Bluetooth 4.0 UART Transceiver Module CC2541 [C] Transistors A Schmitt trigger is alsoHM 10 Bluetooth module is a Bluetooth Low Energy (Bluetooth 4. 0) development module based on the CC02541 Chip from Texas Instruments. The module communicates through UART protocol using AT commands. It can be used to communicate with all BLE devices like Fitness bands, Bluetooth trackers etc or even used as an iBeacon. The module has a built in CPU that supports IO expansion, 14 bit two channel ADC, 120Hz four channel PWM etc. It has a range of 60