Raspberry Pi Applications

The Raspberry Pi is a powerful Linux micro computer, the size of a box of Smarties. Here you can open a websocket to the node.js web server running on my Raspberry Pi.
This page sends a request to the server which then serves a page relevant to the request.
All computations are done in JavaScript on the Raspberry Pi.

Temperature plot

Here you can view plots of historical temperature and humidity data in my office as recorded by a DHT22 temperature sensor on my Rasperry Pi.

Temperature pic

Open a stream of temperature and humidity readings from my Raspberry Pi.

QRCode

Create QR Codes: either on the Raspberry Pi or on the local page.

BarCode

Create barcodes on the Raspberry Pi and send them here.

Cryptography

Do some cryptography. Derive password-based keys and use them to encrypt/decrypt strings.

Notes
1. All these apps run on a node.js web server on a Raspberry Pi (RPi-3).

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(c) 2018 T B Griffin