Hello,

I have this module from China:

https://www.dx.com/en/p/74hc595-8-bit-breakout-shift-register-module-for-arduino-454811

and I wonder how to connect it to SPI.

I think I should connect OE to low.

Then there are pins named

SERIN
RCLK
SRCLK
SRCLR

SERIN should probably go to MOSI. The rest I don't know.

Can you help me?

Thanks

Vaclav

 

hi VZ,
Welcome to AAC.
Is this link any help.?
https://forum.arduino.cc/index.php?topic=394079.0

E

 

Welcome to AAC!

/OE is output enable - connect to GND
SERIN is serial data input - connect to MOSI
RCLK clocks the output register - connect to /SS
/SRCLR clears the serial register - connect this to Vcc
SRCLK is serial clock - connect to SCK

 

Thank you very much.

Vaclav

 

Note that there are four ways to configure SPI (four combinations of CPOL and CPHA).
Select the right one.