Mix Low-Code Node-RED with Python
Adding Python to your Node-RED arsenal lets you create easy Raspberry Pi robotic and IoT projects.
Use a Raspberry Pi Plus a Temperature Sensor to Talk to a PS Vita Display
Lua is an interesting Python alternative for small embedded machines that are not sufficiently powerful to run Python scripts. Create Lua socket client/server scripts to send outside temperatures between a Pi and a PS Vita display.
Learn the Julia Programming Language on a Raspberry Pi
Create GUIs and a web app that connects to sensors.
Store Arduino Sensor Network Data in an SQL Database
If you need to store long-term historical data, you can cobble together some Arduino modules, sensors, and displays and get them all to talk to an SQL server.
OpenWrt on a Pi
Light open source router firmware breathes new life into your old Raspberry Pi.