![Monitoring Temperature Sensor Data with an Arduino based PLC, MQTT, Node-RED, GridDB and Grafana. | GridDB: Open Source Time Series Database for IoT Monitoring Temperature Sensor Data with an Arduino based PLC, MQTT, Node-RED, GridDB and Grafana. | GridDB: Open Source Time Series Database for IoT](https://griddb-pro.azureedge.net/en/wp-content/uploads/2020/09/Screen-Shot-2020-09-24-at-4.06.34-PM.png)
Monitoring Temperature Sensor Data with an Arduino based PLC, MQTT, Node-RED, GridDB and Grafana. | GridDB: Open Source Time Series Database for IoT
![10pcs 3v-5v 650nm Adjustable Mini Laser Sensor Module 5mw Arduino Red Laser Spot Diode Copper Head Level Meter Ground Wire Meter - Sensors - AliExpress 10pcs 3v-5v 650nm Adjustable Mini Laser Sensor Module 5mw Arduino Red Laser Spot Diode Copper Head Level Meter Ground Wire Meter - Sensors - AliExpress](https://ae01.alicdn.com/kf/S848a5232c0774da683dac3a257fe968dL/10PCS-3v-5v-650nm-Adjustable-Mini-Laser-Sensor-Module-5MW-Arduino-Red-Laser-Spot-Diode-Copper.jpg)
10pcs 3v-5v 650nm Adjustable Mini Laser Sensor Module 5mw Arduino Red Laser Spot Diode Copper Head Level Meter Ground Wire Meter - Sensors - AliExpress
![Amazon.com: SparkFun RedBoard - Compatible with Arduino Breadboard-able Development board w/ R3 footprint Microcontroller serves as physical computing learning platform Connect to computer with USB Mini-B : Electronics Amazon.com: SparkFun RedBoard - Compatible with Arduino Breadboard-able Development board w/ R3 footprint Microcontroller serves as physical computing learning platform Connect to computer with USB Mini-B : Electronics](https://m.media-amazon.com/images/I/71d4ZguUIoL.jpg)