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.

Syntax file for Arduino .PDE files. Contribute to vim-scripts/Arduino-syntax-file development by creating an account on GitHub.

🚦Example of using the 74HC165 Shift Register within the ESP8266 Arduino Environment. ... (hardware) interface. The hspi is far faster and should be the perfered method. But, where spi isn't available ...

DDS (Direct Digital Synthesis) is a method to produce analog waves using digital techniques. Analog waves can be sine waves, square waves, triangular waves, or others. This research used SimulIDE ...