Arduino with Ethernet and TLC59165

Using Arduino Project Guidance
1

I'd like to use either an UNO or MEGA with the Ethernet shield and 3 TLC5916 (shift registers). I am familiar with connecting the Ethernet shield and what libraries to load, but how do I make a second SPI and address it in code?

From what I am reading, any three digital pins would suffice for the second SPI, and shiftIn() and shiftOut() is to be used. Would this work?

I'd like to build a controller which can take 2 x 9 momentary switches (via voltage divider on an analogue pin). The switches have LED indicators, I'd like to switch on or off (based on which switch was pressed), what I use the TLC5916s for.

2

Why do you need another SPI? From the datasheet the TLC5916 is similar to the 74HC595 and it is possible to cascade several chips together.

3

One for the Ethernet shield, the other to drive the TLC.
I understand I can use any three pins to emulate a SPI for the TLC.

4

Not necessarily. Share the same SPI pins, only the SS pin is different for each device. Or just use a different microcontroller like ESP8266 or ESP32. They have WiFi if appropriate.
Or just use shiftOut() for TLCs.

5

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.