A while ago I received a couple of I/O port expander modules that use the I 2 C protocol. Using that Chinese module, you can use only the SDA and SCL pins of your Arduino, or any microcontroller ...

Cypress Semiconductor Corp. (NYSE: CY) today introduced two new evaluation kits for its fast-growing PSoC® mixed-signal arrays. The kits, which address pyroelectric infrared (PIR) motion detection and ...