That’s kinda mean. The Arduino already has a socket and a board. Just the ATMega328 is 5,65 euro. For 21 IO pins, that’s 0.26 euro per IO. The MCP23S08 is 1,32 euro, so 0.17 euro per IO.

IO Linking – This is what gives this product its name. When you link two GPIOs, say P5 to P1, pin P1 turns into an input, and all incoming signals are forwarded to the output pin P5.

Hit the source link for full instructions if you want to get in on the holiday action yourself. ... Making use of an ioBridge IO-204 module, an Arduino Wave Kit, ...

A Single In-line Memory Module (SIMM) is a type of memory module containing Random Access Memory (RAM) which was used in computers from the early 1980s to the late 1990s (think 386, 486, Macintoshs… ...

Tiny Arduino Minima module now available via Kickstarter from £16. 1:11 pm March 25, 2021 By Julian Horsey.

An IoT industrial gateway manufactured by Siemens can now be bought from the store.Arduino.cc, making it available for students and makers. RS Components, which is sole supplier for the Simatic ...