Here we need to use only the shift-out registers, so the download version of the library is 1.0 but there is also a version 1.1 of the same library supporting also special pins i.e. PWM and SPI. More ...

Trying hard not to rain on anybodies parade here but…. Figured this out about 15 minutes after reading the 74HC595 data sheet. I regularly use this to feed DIP switch settings back into a micro ...

SPI transactions became officially part of Arduino SPI library some time ago. This happened after many months (most of 2014) of lengthy discussion and testing for these and MANY other details.

2) Display information to LCDs controlled by your Arduino. 3) Be programmed to act as an extensive combination lock 4) Offer commands, such as ENTER, LOAD, CLEAR, etc.

Prestissimo Uno+ Arduino dev board with extra I2C UART SPI ADC IO and PWM channels. 2:24 pm November 5, 2018 By Julian Horsey.