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RPi Node-Red: OLED Display

Table of Contents 1. Connecting the OLED module to the Raspberry Pi Video Tutorial: Begin by connecting your VDD (red wire) and GND (black wire) cables. Connect your SCL (SCK on OLED module) and SDA wires. Connect the VDD…

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RPi-NodeRed OLED IP Address Display

Please copy and paste the entire code block below into the node-red clipboard import window. [{"id":"a1ae5e26.b300a","type":"String","z":"e0e44734.95d078","name":"OLED","display":"4fe1da30.5141a4","x":690,"y":220,"wires":[]},{"id":"60037f1d.3914b","type":"function","z":"e0e44734.95d078","name":"Format Message","func":"msg.payload={\nx:1, \ny:50,\ntext:\"IP \"+msg.payload+\":1880\"\n}\n\nreturn msg;","outputs":1,"noerr":0,"x":520,"y":220,"wires":[["a1ae5e26.b300a"]]},{"id":"8971c892.2fa0f8","type":"change","z":"e0e44734.95d078","name":"IP","rules":[{"t":"set","p":"payload","pt":"msg","to":"payload[0].address","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":350,"y":220,"wires":[["60037f1d.3914b"]]},{"id":"974cfafc.e526d8","type":"inject","z":"e0e44734.95d078","name":"","topic":"","payload":"10","payloadType":"num","repeat":"60","crontab":"","once":true,"onceDelay":0.1,"x":90,"y":220,"wires":[["8c7a8725.02fa58"]]},{"id":"8c7a8725.02fa58","type":"hostip","z":"e0e44734.95d078","name":"Host IP","x":220,"y":220,"wires":[["8971c892.2fa0f8"]]},{"id":"8f95bb29.b800d8","type":"comment","z":"e0e44734.95d078","name":"Display IP address on the mini OLED display","info":"","x":300,"y":180,"wires":[]},{"id":"4fe1da30.5141a4","type":"oled-config","z":"","name":"","width":"128","height":"64","address":"3c"}]

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RPi Node-Red: Buzzer

Parts List: What is a Piezoelectric Buzzer? A piezoelectric buzzer is a buzzer that is activated with an oscillating electric signal.  This means to produce a tone the buzzer must be turned on and off many times per second. The…

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RPi Node-Red: Push Button

Parts List: What is a Push Button? A push button is a momentarily activated button.  When the button mechanism is fully depressed an internal electrical connection is made and this newly made connection can be read as the activation of…

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RPi Node-Red Auto Start

When deploying a Raspberry Pi as a permanent/semi permanent installation is will be useful to have Node-Red start persistently, in the case of power failure, etc. Open a terminal and paste the following command sudo systemctl enable nodered.service Now Node-Red…

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RPi Node-Red: Camera

Parts List: Pi Camera Pi Camera Ribbon Cable Video Tutorial: First the camera needs to be physically installed. The installation looks like this, note the orientation of the connector compared to the USB ports. Setting up Node-Red Start Node-Red…

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