Why wait for a company to manufacture the tech you need when you can build it yourself? These nine Raspberry Pi and Arduino courses show you how for $69.99, $353 off the $423 MSRP.

At about $30, the Arduino isn't an expensive device, but if you want to make your own, simpler version, electronics blog Hardware Startup shows off how to build an Arduino clone for less than $5.

Using an Arduino Pro Mini, a handful of buttons, and a standard TFT display, [Ricardo] has put together a serviceable little receiver with a fairly impressive user interface.

The Arduino Oplà kit is a simple way to start building Internet of Things gadgets for fun and, for some, profit. The $114 starter kit includes an Arduino MKR WiFi 1010 board—basically a tiny ...