Hello is it possible to Daisy chain multiple Attiny85 together using SPI is it possible and how would i go about programming something like that?
Joseph
Dausy chaining, think you do not have enough pins,
put multiple tiny85 on a "SPI-bus", yes possible (assuming the tinys are slaves).
Every Tiny need to have some address (probably hard coded), and then you can send packets over SPI like
<address, command, parameter, ..., CRC >
Every tiny decodes the packet and if the address doesn't match, ignore wait for next command,
if address match, execute command and optional reply .
You could start with one tiny on the bus that should be able to parse commands and ignore them or execute them.
command could be led on led off, something minimalistic.
Like to hear from you when it works,
Success
Hello Robtillaart That is what I'm trying to do one master arduino uno and a bunch of Attiny85 as slaves. I only want to display one of each Analog pins from the Attiny85 to display in Serial on the Uno board. Hardware I'm great i can build it no problem But software coding is what I'm not good at. But i'll figure someway on it.
This might give you a start
- Gammon Forum : Electronics : Microprocessors : SPI - Serial Peripheral Interface - for Arduino ("How to make an SPI slave")
Hello thank you for that. I just came across this just now as i was searching online.